CN107703037A - Apparatus and method for visual detection of high temperature and high pressure natural gas migration and accumulation - Google Patents

Abstract

The embodiment of the application provides a device and a method for visually detecting high-temperature and high-pressure natural gas transportation and aggregation, wherein the device comprises: first gas holder, first container, rock core holder, nuclear magnetic resonance analysis appearance, hot case circulating pump, ring pressure tracking pump, gaseous booster pump, constant voltage constant current pump, the entry end of rock core holder is equipped with two branches: the first branch is connected with a first gas storage tank, and the second branch is connected with a first container; the hot box circulating pump and the ring pressure tracking pump are connected with the rock core holder; the core holder is a non-magnetic core holder and is arranged in a nuclear magnetic resonance analyzer. The method has the advantages that the high-pressure and high-temperature environmental characteristics in the stratum are accurately simulated by the aid of the heat box circulating pump, the annular pressure tracking pump, the gas booster pump and the constant-pressure constant-flow pump, and the distribution state parameters of the target object in the rock core are acquired in real time through the nuclear magnetic resonance analyzer, so that the technical problems that the migration state accuracy of the target object in the rock core is poor, the operation is complex and the detection efficiency is low in the existing method are solved.

Description

Apparatus and method for visual detection of high temperature and high pressure natural gas migration and accumulation

technical field

The present application relates to the technical field of oil and gas exploration and development, in particular to a visual detection device and method for high temperature and high pressure natural gas migration and accumulation.

Background technique

In the process of oil and gas exploration and development, it is often necessary to detect the migration state of the target in the core samples collected in the target area, and then determine the composition of oil and gas in the target formation according to the migration state of the target in the core sample. According to the specific process of the accumulation mechanism, specific oil and gas exploration can be carried out according to the accumulation mechanism of oil and gas, such as the distribution prediction of oil and gas enrichment; or specific oil and gas production can be carried out according to the process of water flooding oil and gas, such as the design of oil and gas production plan.

At present, in order to detect the migration state of the target in the core sample, it is often at room temperature, using instruments and equipment, through one-dimensional simulation to simulate the formation environment in which the core is located, and then detect the target in the core sample, for example, natural gas , water, oil and other distribution state parameters, according to the distribution state parameters of the target object to determine the specific migration of the target object in the core. However, in actual implementation, since the above method is mostly under normal temperature conditions, the migration of the core in the formation is simulated through a simple one-dimensional simulation, which cannot accurately simulate the high-temperature and high-pressure formation in which the core is located under real conditions. Environmental characteristics, which in turn lead to poor accuracy of the measured data. In addition, because the simulation process and the detection process in the existing methods are mostly carried out separately, it is often necessary to perform simulation first and then take out the core samples obtained after simulation before performing corresponding detection. The process is cumbersome and the implementation efficiency is low. Moreover, in specific detection, limited by the existing detection methods, it is often only possible to measure and calculate the distribution of the target in general, and it is impossible to obtain more accurate distribution state parameters. In summary, when the existing core detection methods are implemented, there are often technical problems in detecting the migration state of the target in the core, such as poor accuracy, cumbersome operation, and low detection efficiency.

For the above problems, no effective solution has been proposed yet.

Contents of the invention

The embodiment of the present application provides a visual detection device and method for high-temperature and high-pressure natural gas migration and accumulation to solve the problem of poor accuracy in detecting the migration state of the target in the core existing in the existing core detection method, cumbersome operation and low detection efficiency. Low technical issues.

The embodiment of the present application provides a visual detection device for high temperature and high pressure natural gas migration and accumulation, the device includes: a first gas storage tank, a first container, a core holder, a nuclear magnetic resonance analyzer, a hot box circulating pump, a ring Pressure tracking pump, gas booster pump, constant pressure and constant flow pump, among them,

The rock core holder is used to hold rock core samples, and the inlet end of the rock core holder is provided with two branches: a first branch and a second branch, wherein the first branch is provided with the a first gas storage tank, the second branch is provided with the first container;

The gas booster pump is arranged on the first branch between the first gas storage tank and the core holder, and is used to adjust the gas entering the core holder through the first branch The pressure of the constant pressure and constant flow pump is arranged on the second branch for adjusting the pressure of the gas or liquid entering the core holder through the second branch;

The hot box circulation pump and the ring pressure tracking pump are connected to the core holder, wherein the hot box circulation pump is used to provide a preset temperature for the rock core holder, and the ring pressure tracking pump for providing a preset pressure for the core holder;

The core holder is a non-magnetic core holder, the core holder is placed in the nuclear magnetic resonance analyzer, and the nuclear magnetic resonance analyzer is used to obtain the distribution state parameters of the target in the core sample , wherein the target object includes at least one of the following: water, gas, oil.

In one embodiment, a vacuum pump is provided on the first branch between the gas booster pump and the core holder.

In one embodiment, a second gas storage tank is provided on the first branch between the gas booster pump and the vacuum pump, wherein the second gas storage tank is used to stably pass through the first branch The pressure of the gas entering the core holder.

In one embodiment, the outlet end of the core holder is connected with a second container, and the second container is set on an electronic balance, wherein the second container is used to collect the discharged liquid, and the electronic balance A balance is used to determine the mass of the discharged liquid.

In one embodiment, a back pressure valve and a back pressure booster are sequentially arranged on the second container.

In one embodiment, the second container is further provided with a gas flow meter for measuring the flow rate of the discharged gas.

In one embodiment, the gas flow meter is connected with a full-component gas chromatographic analyzer for determining the composition of the discharged gas.

In one embodiment, the first branch and the second branch are made of polyether ether ketone material.

In one embodiment, the device further includes a processor, the processor is connected to the nuclear magnetic resonance analyzer, and the processor is used to determine the target object in the core sample according to the state parameters of the target object in the core sample state of migration.

The embodiment of the present application also provides a method for detecting the gas distribution state parameters in the rock core under the condition of gas driving water through the above-mentioned visual detection device for high temperature and high pressure natural gas migration and accumulation, including:

Obtain core samples of the target formation;

Pretreating the rock core sample, placing the pretreated rock core sample in a rock core holder;

By adjusting the constant pressure and constant flow pump, filling the core holder with water through the second branch until the pretreated core sample is saturated;

Adjusting the hot box circulating pump until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure;

By adjusting the gas booster pump, the natural gas in the first gas storage tank enters the core holder at a specified pressure;

The distribution state parameters of the natural gas in the core sample are acquired by a nuclear magnetic resonance analyzer.

In one embodiment, after obtaining the distribution state parameters of the natural gas in the core sample, the method further includes:

According to the distribution state parameters of the natural gas in the core sample, determine the seepage mechanism of the natural gas in the target formation;

According to the seepage mechanism of the natural gas, the natural gas reservoir in the target formation is explored and developed.

The embodiment of the present application also provides a method for detecting the distribution state parameters of oil in the core under the condition of oil flooding water through the above-mentioned visual detection device for high temperature and high pressure natural gas migration and accumulation, including:

Obtain core samples of the target formation;

Pretreating the rock core sample, placing the pretreated rock core sample in a rock core holder;

Adjusting the hot box circulating pump until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure;

By adjusting the constant pressure and constant flow pump, filling the core holder with water through the second branch until the pretreated core sample is saturated;

Filling oil into the core holder through the second branch by adjusting the constant pressure and constant flow pump;

A nuclear magnetic resonance analyzer is used to obtain the distribution state parameters of the oil in the core sample.

In one embodiment, after obtaining the distribution state parameters of the oil in the core sample, the method further includes:

Determining the accumulation mechanism of the oil reservoir in the target formation according to the distribution state parameters of the oil in the core sample;

According to the accumulation mechanism of the oil reservoir, the oil reservoir in the target formation is explored and developed.

The embodiment of the present application also provides a method for detecting the distribution state parameters of water in the rock under the condition of water flooding oil or water flooding gas through the above-mentioned visual detection device for high temperature and high pressure natural gas migration and accumulation, including:

Obtain core samples of the target formation;

Pretreating the rock core sample, placing the pretreated rock core sample in a rock core holder;

Adjusting the hot box circulating pump until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure;

Fill the core holder with water by adjusting the constant pressure and constant flow pump;

A nuclear magnetic resonance analyzer is used to obtain the distribution state parameters of water in the core sample.

In one embodiment, after acquiring the distribution state parameters of water in the core sample, the method further includes:

Oil or natural gas in the target formation is exploited according to the distribution state parameters of water in the core sample.

In the embodiment of this application, the environmental characteristics of high pressure and high temperature in the formation are accurately simulated by using the hot box circulating pump, ring pressure tracking pump, gas booster pump, and constant pressure and constant flow pump, and the nuclear magnetic resonance analyzer is used in the simulation. At the same time, the distribution state parameters of the target objects in the core are obtained in real time with high precision, thus solving the problems of poor accuracy, cumbersome operation and low detection efficiency in the existing core detection methods. problem, to achieve the technical effect of determining the distribution state parameters of the target in the core sample in real time, accurately and efficiently while simulating the formation environment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Figure 1 is a structural diagram of a visual detection device for high-temperature and high-pressure natural gas transportation and accumulation provided according to an embodiment of the present application;

Fig. 2 is a schematic structural view of a core holder used in a visual detection device for high-temperature and high-pressure natural gas migration and accumulation provided according to an embodiment of the present application;

Fig. 3 is a schematic flow diagram of detecting the gas distribution state parameters in the core of the rock under the condition of gas driving water by using the high temperature and high pressure natural gas migration and accumulation visual detection device provided by the embodiment of the present application;

Fig. 4 is a schematic flow diagram of detecting the distribution state parameters of oil in the rock under the condition of oil flooding water by using the high temperature and high pressure natural gas migration and accumulation visual detection device provided by the embodiment of the present application;

Fig. 5 is a schematic flow diagram of detecting the distribution state parameters of water in rock under the condition of water flooding oil or water flooding gas by using the high temperature and high pressure natural gas migration and accumulation visual detection device provided by the embodiment of the present application;

Fig. ₆ is a T2 spectral distribution diagram of tight sandstone under different displacement pressures obtained by applying the high-temperature and high-pressure natural gas migration and accumulation visual detection device/method provided by the embodiment of the present application in a scene example;

Fig. 7 is a diagram of methane saturation components in different pore sizes of tight sandstone under different displacement pressures obtained by applying the high-temperature and high-pressure natural gas migration and accumulation visual detection device/method provided by the embodiment of the present application in a scene example;

Fig. 8 is an imaging effect diagram of fluid in tight sandstone under different displacement pressure differences obtained by applying the high-temperature and high-pressure natural gas migration and accumulation visual detection device/method provided by the embodiment of the present application in a scene example (the darker the color in the image, the represents the higher the water content).

Description of drawings:

1. The first gas storage tank, 2. Gas booster pump, 3. The second gas storage tank, 4. Vacuum pump, 5. Core holder, 6. Constant pressure and constant flow pump, 7. The first container, 8. Hot box circulation pump, 9. Ring pressure tracking pump, 10. Second container, 11. Electronic balance, 12. Back pressure valve, 13. Back pressure booster device, 14. Gas flow meter, 15. Full component gas chromatograph Analyzer, 16, nuclear magnetic resonance analyzer, 17, processor, 18, 19, 20 are pressure gauges respectively, V1, V2, V3, V4, V5, V6, V7, V8 are control valves respectively.

detailed description

In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

Considering the existing core detection devices, most of them first simulate the stratum environment through one-dimensional simulation under normal temperature conditions, and then use conventional detection methods to count the distribution of target objects in the core samples under the stratum environment. As a result, it is impossible to accurately simulate the environmental characteristics of high temperature and high pressure in the real formation, and it is impossible to detect the migration status of the target in the core sample in real time while simulating, which leads to the implementation of the existing core detection method. The accuracy of the migration state of the target in mind is poor, the operation is cumbersome, and the technical problems are low detection efficiency. Aiming at the root cause of the above-mentioned technical problems, this application considers that a set of devices can be designed and set up to accurately simulate the environmental characteristics of high temperature and high pressure in real formations, and at the same time, a nuclear magnetic resonance instrument can be introduced to detect real-time and accurately in the core samples during the simulation process. The distribution state parameter of the target object. In order to solve the technical problems of poor accuracy, cumbersome operation, and low detection efficiency in the existing core detection methods, it can determine the core samples in real time, accurately and efficiently while simulating the formation environment. The technical effect of the distribution state parameters of the target.

According to the above situation, the implementation process of the existing methods is specifically analyzed, and the physical simulation experiments performed by nuclear magnetic resonance technology are basically the simulation experiments for the development of reservoir crude oil, and there is no natural gas accumulation, especially natural gas enrichment and accumulation. The process is simulated. Since accumulation and development are reverse processes, and the physical properties of natural gas and oil are quite different, it is impossible to obtain a physical simulation experiment of natural gas accumulation simply based on the physical simulation experiment of crude oil extraction. Moreover, due to the presence of hydrogen nuclei in natural gas, it is difficult to accurately distinguish oil and water simply by means of nuclear magnetic resonance in existing methods. Moreover, when the existing methods are implemented, most of them use carbon dioxide or nitrogen to simulate the production process, but do not use real natural gas to simulate the formation process of the actual gas reservoir. Therefore, the existing methods cannot accurately obtain the distribution state parameters of the target objects in the core samples. , and it is also impossible to perform real-time visual detection of high-temperature and high-pressure natural gas migration and accumulation.

Based on the above analysis content, the embodiment of the present application provides a visual detection device for high temperature and high pressure natural gas migration and accumulation. For details, please refer to FIG. 1 , which is a composition and structure diagram of a rock core detection device provided according to an embodiment of the present application. The embodiment of the present application provides a visual detection device for high temperature and high pressure natural gas migration and accumulation, which may specifically include: a first gas storage tank 1, a first container 7, a core holder 5, a nuclear magnetic resonance analyzer 16, and a hot box cycle Pump 8, ring pressure tracking pump 9, gas booster pump 2, constant pressure and constant flow pump 6, wherein,

The rock core holder 5 is used to hold rock core samples, and the inlet end of the rock core holder 5 is provided with two branches: a first branch and a second branch, wherein the first branch is provided with There is the first gas tank 1, and the second branch is provided with the first container 7;

The gas booster pump 2 is arranged on the first branch between the first gas storage tank 1 and the rock core holder 5, and is used to regulate the gas entering the rock core holder through the first branch. The pressure of the gas in 5; the constant pressure and constant flow pump 6 is arranged on the second branch for adjusting the pressure of the gas or liquid entering the core holder 5 through the second branch;

The hot box circulation pump 8 and the ring pressure tracking pump 9 are connected to the core holder 5, wherein the hot box circulation pump 8 is used to provide a preset temperature for the core holder 5, so The ring pressure tracking pump 9 is used to provide preset pressure for the core holder 5;

The core holder 5 is a non-magnetic core holder, the core holder 5 is placed in the nuclear magnetic resonance analyzer 16, and the nuclear magnetic resonance analyzer 16 is used to obtain the target object in the core sample The distribution state parameters of the target object include at least one of the following: water, gas, oil.

In this embodiment, the target object may specifically be water, gas, or oil. Wherein, the gas may specifically be a single-component gas, such as methane and nitrogen, or a gas containing multiple components, such as natural gas containing C ₁ -C ₄ components. During specific implementation, corresponding single-component gas or multi-component gas can be selected as the above-mentioned gas according to the specific conditions and construction requirements of the gas reservoir in the formation. The oil may in particular be petroleum. Of course, it should be noted that the targets listed above are only for better illustrating the implementation of the present application. During specific implementation, other corresponding substances can also be selected as the targets according to specific conditions and construction requirements.

In this embodiment, in order to simulate the fluid pressure difference caused by the difference in storage performance between the oil and gas reservoirs under the formation and the surrounding rocks, a back pressure valve 12 and a back pressure riser are sequentially provided at the outlet end of the core holder 5. Pressure device 13. The experimental back pressure value can be set by adjusting the back pressure valve 12 and the back pressure booster 13, and the pressure difference between the source rock and the reservoir under actual formation conditions can be adjusted by controlling the valve V2 and the back pressure valve 12. The gas filling pressure difference required for the simulation experiment.

In this embodiment, in order to reduce interference to the nuclear magnetic resonance apparatus 16, the first branch and the second branch may specifically be air ducts made of non-magnetic materials. Wherein, the above-mentioned non-magnetic material may specifically be polyetheretherketone (poly-ether-ether-ketone, PEEK). The above material is specifically a polymer composed of repeating units containing one ketone bond and two ether bonds in the main chain structure. It is a special polymer material with physical and chemical properties such as high temperature resistance, chemical corrosion resistance, and non-magnetic properties. It is a kind of semi-crystalline polymer material.

In this embodiment, in order to better control the above-mentioned visual detection device for high-temperature and high-pressure natural gas migration and accumulation, and more conveniently adjust the gas, water or oil filled in the core device, the first branch and the There are also multiple groups of control valves and pressure gauges on the second branch road. In this way, the pressure values of some key nodes in the above-mentioned first branch and the second branch can be obtained through the pressure gauge; then according to the pressure value, the gas, water or The flow of oil is controlled accordingly so that specific testing requirements can be met.

In this embodiment, the nuclear magnetic resonance analyzer 16 is also connected to the processor 17 in order to further analyze and process the data according to the distribution state parameters of the target collected by the nuclear magnetic resonance analyzer 16 . Wherein, the above-mentioned processor 17 may specifically be a computer, or an intelligent electronic device with data processing capability. During specific implementation, the processor 17 may determine the movement state of the target object according to the distribution state parameter of the target object. Then analyze the corresponding mechanism or process in the target formation according to the migration state of the target object, for example, the seepage mechanism of natural gas in the target formation, the accumulation mechanism of oil reservoirs in the target formation, the implementation process of oil production in the target formation through water flooding, The implementation process of water drive gas recovery of natural gas in the target formation. So that specific construction can be carried out according to the corresponding mechanism or process in the target formation, for example, exploration and development of natural gas reservoirs in the target formation, exploration and development of oil reservoirs in the target formation, specific exploitation of natural gas in the target formation or The oil in the formation is specifically extracted.

In this embodiment, in order to collect the liquid discharged through the core holder 5 conveniently, in practice, a second container 10 may be provided at the outlet end of the core holder 5 to collect the discharged liquid.

In this embodiment, in order to further analyze the amount of the discharged liquid, an electronic balance 11 can be set at the bottom of the second container 10 for real-time detection of the quality of the discharged liquid, so that the movement of the target in the core sample can be more accurately analyzed. shift state.

In this embodiment, in order to further analyze the specific situation of the gas discharged through the core holder 5, a gas flow meter 14 may be connected to the outlet end of the second container 10 to detect the gas flow rate discharged in real time.

In this embodiment, in order to perform specific analysis on the exhausted multi-component gas components, the other end of the gas flowmeter 14 is connected with a full-component gas chromatography analyzer 15 for real-time analysis of the specific components of the exhausted gas , so that the migration state of different gas components in the target in the core sample can be analyzed more accurately.

In this embodiment, when detecting the distribution state parameters of the target object under the condition of gas driving water, the gas to be tested can be stored in the first gas storage tank 1, wherein the gas to be tested can specifically be a single-component gas, or It is a multicomponent natural gas. During specific implementation, the acquired core samples in the target area can be placed in the core holder 5 . The core holder 5 is heated by the hot box circulation pump 8, and the core holder 5 is pressurized by the ring pressure tracking pump 9, so that the ambient temperature of the core sample in the core holder 5 reaches and stabilizes At the preset temperature, the ambient pressure reaches and stabilizes at the preset pressure, so as to simulate the environmental characteristics of high temperature and high pressure in the real formation environment. Specifically, for example, in order to study the enrichment and accumulation process of high-temperature and high-pressure natural gas in the reservoir, the preset pressure can be set at 70MPa, and the preset temperature can be set at 170°C. It should be noted that the aforementioned preset temperature and preset pressure may be specifically determined according to the stratum conditions of the target area studied. A processing gas is stored in the first container 7, wherein the processing gas may be the same gas as the gas to be tested, or may be a different gas from the gas to be tested. By adjusting the constant pressure and constant flow pump 6, processing gas can be filled into the core holder 5 until the core sample is saturated. When the core sample is saturated, the gas to be tested in the first gas storage tank 1 is charged into the core holder 5 through the gas booster pump 2 . Since the core holder 5 is placed in the nuclear magnetic resonance analyzer 16, and the core holder is a non-magnetic core holder, it will not interfere with the work of the nuclear magnetic resonance analyzer. In this way, the signal amount of hydrogen can be detected in real time by the nuclear magnetic resonance analyzer, so as to obtain the distribution state parameters of the gas to be measured in the core sample in real time. At the same time, according to specific conditions and construction requirements, other parameter data such as the distribution parameters of water in the core sample and the size of the pores in the core sample can also be obtained through real-time detection by the nuclear magnetic resonance analyzer 16 . Furthermore, a processor, such as a computer, can be used to determine the gas to be measured in the core sample under the condition of gas driving water, according to the distribution state parameters of the gas to be measured, combined with the distribution parameters of water in the core sample, the size of the pores in the core sample, and other parameter data. the movement situation. According to the migration of the gas to be measured, the seepage mechanism of the gas to be measured in the target formation can be further determined. Furthermore, according to the seepage mechanism of the gas to be measured in the target formation, the specific exploration and development of the gas reservoir to be measured in the target formation can be carried out.

In this embodiment, oil may be stored in the first container when detecting the distribution state parameter of the target object in the case of oil flooding water. During specific implementation, the obtained core samples of the target formation can be placed in the core holder 5 . The core holder 5 is heated by the hot box circulation pump 8, and the core holder 5 is pressurized by the ring pressure tracking pump 9, so that the high-temperature liquid circulates around the core under the pressure of the ring pressure, so that the core The ambient temperature of the core sample in the holder 5 reaches and stabilizes at a preset temperature, and the ambient pressure reaches and stabilizes at a preset pressure, so as to simulate the environmental characteristics of high temperature and high pressure in a real formation environment. It should be noted that the above-mentioned preset temperature and preset pressure can be determined according to the formation conditions of the target area studied, and the liquid circulated in the circulation pump is a fluorinated liquid, which can prevent the use of other liquids to cause hydrogen ions to generate signals and affect Experimental results. Fill oil into the core holder 5 by adjusting the constant pressure and constant flow pump 6 . The signal amount of hydrogen is detected in real time by the nuclear magnetic resonance analyzer 16, so as to obtain the distribution state parameters of the oil in the core sample in real time. At the same time, according to specific conditions and construction requirements, other parameter data such as the distribution parameters of water in the core sample and the size of the pores in the core sample can also be obtained through real-time detection by the nuclear magnetic resonance analyzer 16 . Furthermore, a processor, such as a computer, can be used to determine the migration of oil in the core sample under the condition of oil flooding water according to the distribution state parameters of the oil, combined with the distribution parameters of water in the core sample, the size of the pores in the core sample, and other parameter data. According to the oil migration, the accumulation mechanism of the oil reservoir in the target formation can be further determined. Furthermore, according to the accumulation mechanism of the reservoir in the target stratum, specific exploration and development of the reservoir in the target stratum can be carried out.

In this embodiment, when detecting the distribution state parameter of the target object in the case of water flooding, water may be stored in the first container. During specific implementation, the obtained core samples of the target formation can be placed in the core holder 5 . The core holder 5 is heated by the hot box circulation pump 8, and the core holder 5 is pressurized by the ring pressure tracking pump 9, so that the ambient temperature of the core sample in the core holder 5 reaches and stabilizes At the preset temperature, the ambient pressure reaches and stabilizes at the preset pressure, so as to simulate the environmental characteristics of high temperature and high pressure in the real formation environment. Water is filled into the core holder 5 by adjusting the constant pressure and constant flow pump 6 . The signal amount of hydrogen is detected in real time by the nuclear magnetic resonance analyzer 16, so as to obtain the distribution state parameters of water in the core sample in real time. At the same time, according to specific conditions and construction requirements, other parameter data such as the distribution state parameters of the oil in the core sample, the size of the pores in the core sample, etc. can also be obtained through real-time detection by the nuclear magnetic resonance analyzer 16 . Furthermore, a processor, such as a computer, can be used to determine the migration of oil in the core sample under the condition of water flooding, according to the distribution state parameters of water, combined with the distribution state parameters of oil in the core sample, the size of the pores in the core sample, and other parameter data. According to the migration of oil, the implementation process of water flooding in the target formation can be further determined. Furthermore, according to the implementation process of water flooding, a corresponding recovery plan can be formulated for the oil in the target formation.

In this embodiment, water may be stored in the first container when detecting the distribution state parameter of the target object in the case of water-driven gas. During specific implementation, the obtained core samples of the target formation can be placed in the core holder 5 . The core holder 5 is heated by the hot box circulation pump 8, and the core holder 5 is pressurized by the ring pressure tracking pump 9, so that the ambient temperature of the core sample in the core holder 5 reaches and stabilizes At the preset temperature, the ambient pressure reaches and stabilizes at the preset pressure, so as to simulate the environmental characteristics of high temperature and high pressure in the real formation environment. Water is filled into the core holder 5 by adjusting the constant pressure and constant flow pump 6 . The signal amount of hydrogen is detected in real time by the nuclear magnetic resonance analyzer 16, so as to obtain the distribution state parameters of water in the core sample in real time. At the same time, according to specific conditions and construction requirements, the nuclear magnetic resonance analyzer 16 can also detect and obtain other parameter data such as the distribution state parameters of natural gas in the core sample, the size of the pores in the core sample, etc. in real time. Furthermore, a processor, such as a computer, can be used to determine the gas migration in the core sample under the condition of water driving gas, according to the distribution state parameters of water, combined with the distribution state parameters of natural gas in the core sample, the size of the pores in the core sample, and other parameter data. Condition. According to the gas migration, the implementation process of water driving gas in the target formation can be further determined. Furthermore, according to the implementation process of water driving gas, a corresponding exploitation plan can be formulated for the natural gas in the target formation.

In the embodiment of the present application, compared with the existing core detection device, the environmental characteristics of high pressure and high temperature in the formation are accurately simulated by using the hot box circulation pump, ring pressure tracking pump, gas booster pump, and constant pressure and constant flow pump , while the NMR analyzer is simulating, the distribution state parameters of the target objects in the rock core are obtained in real time with high precision, thus solving the problem of detecting the migration state accuracy of the target objects in the rock core existing in the existing core detection methods Poor, cumbersome operation, low detection efficiency technical problems, to achieve the technical effect of real-time online, accurate and efficient determination of the distribution state parameters of the target in the core sample while simulating the formation environment.

In one embodiment, in order to more accurately detect the distribution state parameters of the target, and to better adjust the overall pressure in the above-mentioned visual detection device for high-temperature and high-pressure natural gas migration and accumulation, during specific implementation, it is possible to pressurize the gas A vacuum pump 4 is provided on the first branch between the pump 2 and the core holder 5 . It is used to vacuumize the core holder 5 before specific testing.

In one embodiment, to stabilize the pressure in the first branch. During specific implementation, a second gas storage tank 3 may be provided on the first branch between the gas booster pump 2 and the vacuum pump 4 . During specific implementation, during the process of filling the core holder 5 with the gas to be measured in the first gas storage tank 1 through the gas booster pump 2, the above-mentioned second gas storage tank 3 can buffer the gas in the first branch circuit. gas to be measured. In this way, the pressure of the gas to be tested entering the core holder 5 through the first branch can be stabilized, so that the gas to be tested in the first branch can be filled into the core holder at a stable pressure and a stable flow rate. Holder 5.

In one embodiment, in order to conveniently collect the liquid discharged through the core holder 5 during the detection process, the outlet end of the core holder 5 is connected with a second container 10 . In order to conveniently detect the amount of discharged liquid, so as to better analyze the migration of the target in the core sample, the second container 10 can be specifically arranged on an electronic balance 11 . In this way, during specific implementation, the discharged liquid can be collected through the second container 10 , and the mass of the discharged liquid can be measured in real time through the electronic balance 11 .

In one embodiment, in order to better adjust the gas pressure in the detection device, during specific implementation, a back pressure valve 12 and a back pressure booster 13 may be arranged in sequence on the second container 10 . In this way, by controlling the back pressure valve 12 and the back pressure booster 13, the pressure in the visual detection device for high temperature and high pressure natural gas migration and accumulation can be adjusted to better simulate the reservoir heterogeneity conditions in the formation.

In one embodiment, in order to measure the flow rate of the gas discharged through the core holder 5 in real time, the second container 10 is further provided with a gas flow meter 14 for measuring the flow rate of the gas discharged.

In one embodiment, in order to detect the specific composition of the discharged natural gas in real time, so as to better analyze the migration of different components of the natural gas in the target in the core sample, the gas flow meter 14 can also be connected with a full Component Gas Chromatography Analyzer 15. Through the full-component gas chromatographic analyzer 15, the relative composition changes of the exhaust gas under different displacement pressures can be obtained and determined.

In one embodiment, in order to reduce interference to the nuclear magnetic resonance analyzer 16 , the air ducts of the first branch and the second branch can be made of polyether ether ketone material. Wherein, the polyether ether ketone material is a non-magnetic material, which will not interfere with the operation of the nuclear magnetic resonance analyzer 16 . Of course, it should be noted that, during specific implementation, other non-magnetic materials can also be selected according to specific conditions to make the air guide tubes of the first branch and the second branch. In this regard, this application does not make a limitation.

In one embodiment, the nuclear magnetic resonance analyzer 16 is also connected to the processor 17 in order to further analyze and process the data according to the distribution state parameters of the target collected by the nuclear magnetic resonance analysis 16 . Wherein, the above-mentioned processor 17 may specifically be a computer, or an intelligent electronic device with data processing capability. During specific implementation, the processor 17 may determine the movement state of the target object according to the distribution state parameter of the target object. Then analyze the corresponding mechanism or process in the target formation according to the migration state of the target object, for example, the seepage mechanism of natural gas in the target formation, the accumulation mechanism of oil reservoirs in the target formation, the implementation process of oil production in the target formation through water flooding, The implementation process of water drive gas recovery of natural gas in the target formation. So that the specific construction can be carried out according to the corresponding mechanism or process in the above target formation, for example, the exploration and development of natural gas reservoirs in the target formation, the exploration and development of oil reservoirs in the target formation, the development of natural gas in the target formation or oil in the target formation specific mining plans.

In this embodiment, during specific implementation, the processor 17 can also generate a real-time detection image about the movement state of the target object according to the distribution state parameters of the target object, wherein the real-time detection image can clearly reflect the simulated In the formation environment (for example, a high temperature and high pressure environment), the migration and accumulation of the target (for example, natural gas) at each time point will help further data analysis and processing to determine the specific accumulation mechanism in the target formation, For example, the enrichment and accumulation mechanism of natural gas in the reservoir for subsequent exploration and development.

In one embodiment, in order to better control the implementation of the visual detection device for high temperature and high pressure natural gas migration and accumulation, control valves can be set at certain designated positions of the high temperature and high pressure natural gas migration and accumulation visual detection device during specific implementation. And pressure gauges, so as to adjust and control the specific flow and pressure of gas, oil and water in the core holder. Specifically, refer to FIG. 1 . Control valves V1, V2, V4, V5, V6, V7, V8 and pressure gauges 18, 19, 20 are respectively set at certain designated positions of the high temperature and high pressure natural gas transportation and accumulation visualization detection device. In this way, the pressure data used for the specified position in the high-temperature and high-pressure natural gas migration and accumulation visualization detection device can be obtained through the pressure gauges 18 , 19 , and 20 . Then according to the pressure data at the designated location, the specific flow and pressure of gas, oil and water used in the high-temperature and high-pressure natural gas transportation and accumulation visual detection device are controlled accordingly by controlling the valves V1, V2, V4, V5, V6, V7 and V8 , so that the environment of the core in the formation can be better simulated, and the migration of the target in the core sample can be analyzed more accurately.

In one embodiment, in order to better cooperate with the hot box circulation pump 8 and the ring pressure tracking pump 9, to accurately simulate the geological environment of high pressure and high temperature in the formation. The core holder 5 may specifically be an improved core holder. For details, please refer to FIG. 2 , which is a schematic structural diagram of a core holder used in a visual detection device for high-temperature and high-pressure natural gas migration and accumulation provided according to an embodiment of the present application. From the inside of the outer wall of the core holder 5 to the direction of the core, circulating fluid and heat-shrinkable tubes are provided in sequence. During specific implementation, the heat-shrinkable tube is wrapped around the core and put into the core holder 5, and then the hot box circulating pump 8 and the ring pressure tracking pump 9 connected to the core holder 5 are used to press the high-temperature circulating fluid on the core. Circulating around to provide preset temperature and preset pressure for the core holder 5, so as to simulate the high temperature and high pressure environment of the core in the target formation.

In this embodiment, what needs to be supplemented is that the visualized detection device for high-temperature and high-pressure natural gas migration and accumulation provided by this application, through the above-mentioned structure, functions such as vacuuming, saturation, displacement, nuclear magnetic detection, and gas component detection will be implemented. Combined together, the dynamic process of gas enrichment in the core can be simulated; and the internal pores and gas distribution can be displayed in the form of images; at the same time, the distribution and migration of natural gas inside the core can be detected in real time; in addition, without taking out samples Next, complete the whole process from experiment preparation to displacement to imaging. Therefore, real-time visual detection of high temperature and high pressure natural gas migration and accumulation can be realized.

From the above description, it can be seen that the embodiment of the present application provides a visual detection device for high temperature and high pressure natural gas migration and accumulation. By using the hot box circulation pump, ring pressure tracking pump, gas booster pump, constant pressure and constant flow pump to accurately simulate the environmental characteristics of high pressure and high temperature in the formation, and through the nuclear magnetic resonance analyzer while simulating, the real-time acquisition accuracy is high The distribution state parameters of the target objects in the rock core can be solved, so as to solve the problems of poor accuracy in detecting the migration state of the target objects in the rock core detection methods, cumbersome operation, low detection efficiency, and inability to detect the target objects in the rock core on-line. The technical problem of the migration state achieves the technical effect of determining the distribution state parameters of the target in the core sample in real time, accurately and efficiently while simulating the formation environment; and by using a non-magnetic core holder, it is possible to directly apply NMR The resonance instrument detects the distribution state parameters of the target in the core sample in real time; the first branch and the second branch made of non-magnetic materials are also used to reduce the interference to the nuclear magnetic resonance analyzer and reduce the detection error.

For the above-mentioned visual detection device for high-temperature and high-pressure natural gas migration and accumulation, in order to detect the distribution state parameters of gas in the core sample under the condition of gas-driven water, for specific implementation, you can refer to the application of Figure 3 for the high-temperature and high-pressure Schematic diagram of the process of detecting the distribution state parameters of gas in the rock core by the visual detection device of natural gas migration and accumulation under the condition of gas driving water. Follow the steps below to simulate the real formation environment conditions in which the core is located, and detect and determine the distribution of natural gas in the core in real time state parameters.

Step S301: Obtain a core sample of the target formation.

Step S302: Perform pretreatment on the rock core sample, and place the pretreated rock core sample in a core holder.

Step S303: by adjusting the constant pressure and constant flow pump, filling the core holder with water through the second branch until the pretreated core sample is saturated.

Step S304: adjusting the circulating pump of the hot box until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure.

Step S305: by adjusting the gas booster pump, the natural gas in the first gas storage tank enters the core holder at a specified pressure.

Step S306: Obtain the distribution state parameters of the natural gas in the core sample by using a nuclear magnetic resonance analyzer.

In this embodiment, it should be noted that the distribution state parameters of natural gas in the core sample can be obtained by the nuclear magnetic resonance analyzer, and at the same time, the pore size in the core sample, the distribution state parameters of water in the core sample, etc. can be obtained through detection.

In one embodiment, after obtaining the distribution state parameters of the natural gas in the core sample, in order to explore and develop the gas reservoir in the target formation, the method may further include the following steps.

Step S307: According to the distribution state parameters of the natural gas in the core sample, determine the seepage mechanism of the natural gas in the target formation.

In this embodiment, during specific implementation, the seepage mechanism of natural gas in the target formation can be analyzed and determined according to the distribution parameters of the natural gas in the core sample, combined with the pore size in the core sample, the distribution state parameters of water in the core sample, etc. .

Step S308: According to the seepage mechanism of the natural gas, carry out exploration and development of the natural gas reservoir in the target formation.

For the above-mentioned visual detection device for high-temperature and high-pressure natural gas migration and accumulation, in order to detect the distribution state parameters of oil in the core sample under the condition of oil flooding water, for specific implementation, you can refer to the application of the high-temperature and high-pressure natural gas provided by the embodiment of this application Schematic diagram of the process of detecting the distribution state parameters of oil in the core by the visual detection device of migration and accumulation under the condition of oil flooding water. Follow the steps below to simulate the real formation environment conditions in which the core is located, and detect and determine the distribution state of oil in the core in real time parameter.

Step S401: Obtain a core sample of the target formation.

Step S402: Perform pretreatment on the rock core sample, and place the pretreated rock core sample in a core holder.

Step S403: adjusting the circulating pump of the hot box until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure.

Step S404: by adjusting the constant pressure and constant flow pump, filling the core holder with water through the second branch until the pretreated core sample is saturated.

Step S405: filling the core holder with oil through the second branch by adjusting the constant pressure and constant flow pump.

Step S406: Obtain the distribution state parameters of the oil in the core sample by using a nuclear magnetic resonance analyzer.

In this embodiment, it should be noted that the distribution state parameters of oil in the core sample can be obtained by the nuclear magnetic resonance analyzer, and at the same time, the pore size in the core sample, the distribution state parameters of water in the core sample, etc. can be obtained through detection.

In one embodiment, after obtaining the distribution state parameters of the oil in the core sample, in order to explore and develop the oil reservoir in the target formation, the method may further include the following steps.

Step S407: Determine the accumulation mechanism of the oil reservoir in the target formation according to the distribution state parameters of the oil in the core sample.

In this embodiment, during specific implementation, the accumulation mechanism of the oil reservoir in the target formation can be analyzed and determined according to the distribution state parameters of oil in the core sample, combined with the pore size in the core sample, the distribution state parameters of water in the core sample, etc. .

Step S408: Carry out exploration and development of the reservoir in the target stratum according to the accumulation mechanism of the reservoir.

For the above-mentioned visual detection device for high-temperature and high-pressure natural gas migration and accumulation, in order to detect the distribution state parameters of water in the core sample under the condition of water flooding oil or water flooding gas, for specific implementation, you can refer to the application provided in the embodiment of this application in Figure 5 Schematic flow chart of the high temperature and high pressure natural gas migration and accumulation visual detection device to detect the distribution state parameters of water in the rock under the condition of water flooding oil or water driving gas. Follow the steps below to simulate the real formation environmental conditions in which the core is located, and determine the environment in real time The distribution state parameters of water in the lower core.

Step S501: Obtain a core sample of the target formation.

Step S502: Perform pretreatment on the rock core sample, and place the pretreated rock core sample in a core holder.

Step S503: adjusting the circulating pump of the hot box until the temperature of the core holder reaches a preset temperature; adjusting the ring pressure tracking pump until the pressure of the core holder reaches a preset pressure.

Step S504: filling the core holder with water by adjusting the constant pressure and constant flow pump.

Step S505: Obtain the distribution state parameters of water in the core sample by using a nuclear magnetic resonance analyzer.

In this embodiment, it should be noted that the distribution state parameters of water in the core sample can be obtained by the nuclear magnetic resonance analyzer, and at the same time, the pore size in the core sample, the distribution state parameter of oil in the core sample, and the natural gas in the core sample can also be detected. The distribution state parameters of and so on.

In one embodiment, after obtaining the distribution state parameters of water in the core sample, in order to carry out specific oil and gas production by using methods such as water flooding for oil or natural gas in the target formation, the method may specifically include the following step.

Step S506: According to the distribution state parameters of water in the core sample, oil or natural gas in the target formation is exploited.

In this embodiment, during specific implementation, it can be simulated according to the distribution state parameter of water in the core sample, combined with the pore size in the core sample, the distribution state parameter of oil in the core sample, the distribution state parameter of natural gas in the core sample, etc. By analyzing the implementation process of water flooding oil or water flooding gas, and then according to the above implementation process, a specific oil or natural gas exploitation plan in the target formation can be formulated.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant parts, refer to part of the description of the method embodiment.

It should be noted that the systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. For the convenience of description, in this specification, when describing the above devices, the functions are divided into various units and described respectively. Of course, when implementing the present application, the functions of each unit can be implemented in one or more pieces of software and/or hardware.

Furthermore, in this specification, adjectives such as first and second may only be used to distinguish one element or action from another without necessarily requiring or implying any actual such relationship or order. Reference to an element or component or step (etc.) should not be construed as being limited to only one of the element, component, or step, but may be one or more of the element, component, or step, etc., where the circumstances permit.

From the above description, it can be seen that the visual detection device/method for high-temperature and high-pressure natural gas transportation and accumulation provided by the embodiment of the present application uses a hot box circulation pump, an annular pressure tracking pump, a gas booster pump, a constant pressure and constant flow The pump accurately simulates the environment characteristics of high pressure and high temperature in the formation, and at the same time, the nuclear magnetic resonance analyzer obtains the distribution state parameters of the target objects in the core with high precision while simulating, thus solving the problems existing in the existing core detection methods. The technical problems of detecting the migration state of the target in the core are poor accuracy, cumbersome operation, and low detection efficiency, and achieve the technical effect of determining the distribution state parameters of the target in the core sample in real time, accurately and efficiently while simulating the formation environment , and can use the same set of high-temperature and high-pressure natural gas migration and accumulation visualization detection device to simulate and detect the distribution state parameters of the target under different conditions; and by using a non-magnetic core holder, it is possible to directly apply the nuclear magnetic resonance instrument to the core sample The distribution state parameters of the target are detected in real time; the interference to the nuclear magnetic resonance analyzer is reduced by using the first branch and the second branch made of non-magnetic materials, and the detection error is reduced.

In a specific implementation scenario, refer to Fig. 1, the application of this application provides a visual detection device/method for high temperature and high pressure natural gas migration and accumulation in the case of gas (natural gas) flooding water, the migration state of the target object in the core sample of a certain target formation Carry out specific simulation tests.

S1: Connect to a visual detection device for high temperature and high pressure natural gas transportation and accumulation. During specific implementation, the following steps may be included.

S1-1: Connect the gas source (that is, the first gas storage tank storing the gas to be tested) with the gas booster pump;

S1-2: Connect the gas booster pump to the second gas storage tank, with a control valve in the middle to control the gas flow, and connect a pressure gauge to the second gas storage tank to monitor the pressure of the second gas tank ;

S1-3: Connect the second gas storage tank to the core holder, and the connecting pipeline is provided with a control valve, a vacuum device, and a pressure gauge for monitoring the pressure of the gas injected into the core holder. And another branch (i.e. the second branch) is connected to this section of the main road (i.e. the first branch), which includes a constant pressure and constant flow pump and a first container, and the branch is connected to the guide core clamp the inlet end of the holder;

S1-4: Connect the ring pressure tracking pump to the hot box circulation pump first, and then connect it to the core holder together;

S1-5; placing the core holder in the nuclear magnetic resonance analyzer;

S1-6: connecting the nuclear magnetic resonance analyzer with a computer (i.e. processor) online detection and imaging system;

S1-7: Connect the outlet end of the core holder to the second container;

S1-8: placing an electronic balance under the second container to detect the quality of the displaced liquid;

S1-9: Connect the right end of the second container to the upper end of the back pressure valve;

S1-10: Connect the lower end of the back pressure valve to the back pressure booster to increase the pressure at the outlet end of the core holder;

S1-1: Connect the upper end of the back pressure valve to a gas flow meter. If the pressure of the displaced gas is greater than the pressure of the back pressure valve, the gas will enter the gas flow meter through the back pressure valve, and the gas flow meter can measure the discharged gas. gas flow.

S2: Through the visual detection device for high-temperature and high-pressure natural gas migration and accumulation, the distribution state parameters of the target objects in the core sample are specifically detected.

S2-1: Dry the pretreated core at 110°C for 4 to 10 hours, and then put it into the core holder;

S2-2: According to the specific situation and according to the experimental requirements, add the liquid or gas required for saturation into the first container;

S2-3: Turn on the switch of the hot box circulation pump and the ring pressure tracking pump, open the control valve V6, and increase the pressure and temperature of the core holder;

S2-4: Open the control valves V3 and V4 to vacuumize the core holder;

S2-5: Close the control valves V3 and V4, and open the control valves V5 and V7, inject the liquid or gas in the first container into the core with a constant pressure and constant speed pump to adjust the injection pressure and back pressure, and make the core The sample is fully saturated;

S2-6: Close the control valve V5, open the control valves V1 and V4, control the gas injection pressure and adjust the back pressure by adjusting the control valve V2;

S2-7: Turn on the nuclear magnetic resonance analysis and computer, and measure or calculate relevant parameters (including: pore size of the core sample, water distribution parameters in the core sample, oil distribution parameters by real-time measurement of the signal quantities at different injection pressure points inside the core) , gas distribution parameters), and then complete the imaging operation of the core sample;

S2-8: Open the control valve V8, and the gas passes through the full-component gas chromatographic analyzer for component detection to obtain the specific components of the exhaust gas.

S3: Data processing and analysis.

According to the relevant parameters detected by the nuclear magnetic resonance analyzer, the data is processed by the computer, and multiple processing results can be obtained according to the construction needs. Specifically, it may include: the schematic flow diagram of the distribution state parameters of water in the rock under the condition of water flooding oil or water flooding gas detected by the application of the high temperature and high pressure natural gas migration and accumulation visual detection device provided by the embodiment of the present application as shown in Figure 5, and Figure 6 As shown in a scenario example, the tight sandstone nuclear magnetic resonance T2 spectral distribution diagrams obtained by applying the high _- temperature and high-pressure natural gas migration and accumulation visual detection device/method provided by the embodiment of the present application under different displacement pressures are shown in FIG. 7 In a scene example, the methane saturation component diagram of tight sandstone in different pore sizes under different displacement pressures obtained by applying the core detection device/method provided in the embodiment of the application, as shown in Figure 8, the application of the application in a scene example Imaging effect images of fluids in tight sandstone under different displacement pressure differences obtained by the high-temperature and high-pressure natural gas migration and accumulation visual detection device/method provided in the embodiments (the darker the color in the image, the higher the water content).

According to the above computer processing results, the seepage mechanism of natural gas in the target formation can be further analyzed. In this way, specific exploration and development of natural gas reservoirs in the target formation can be carried out according to the seepage mechanism of the natural gas in the target formation.

In this embodiment, it also needs to be explained that the visual detection device for high temperature and high pressure natural gas transportation and accumulation used in this scenario example may specifically include the following components: injection system, temperature and pressure control system, nuclear magnetic detection system and metering system. Among them, the above-mentioned injection system can specifically have three functions of saturation, displacement and vacuuming, and can specifically include: gas storage tanks, gas booster pumps, constant pressure and constant flow pumps, vacuum pumps and other structures; the temperature and pressure control system can specifically use For heating up and boosting pressure, its structure can specifically include: hot box circulation pump and ring pressure tracking pump and other structures; nuclear magnetic detection system can be used to detect the migration of fluid inside the core, and its structure can specifically include: core clamping The metering system can be used to detect the quality and composition of the outlet fluid, and its structure can include: electronic balance, gas flow meter, back pressure valve, back pressure booster and full component Structures such as gas chromatograph analyzers. In the specific implementation process, in order to ensure that the equipment can complete the whole process of the experiment without taking out samples, several major systems are connected by connecting the injection system with the nuclear magnetic detection system, and connecting the metering system in a branch of the nuclear magnetic detection system. The other branch is connected to the temperature and pressure control system. Therefore, the real-time visual detection of the migration and accumulation of high-temperature and high-pressure natural gas can be tested through the core detection device.

Through the above scenario example, it is verified that the device/method for visual detection of high temperature and high pressure natural gas migration and accumulation provided by the implementation of the present application can indeed solve the problem of detecting the migration state accuracy of the target in the core existing in the existing core detection method Poor, cumbersome operation, low detection efficiency technical problems.

Although different specific implementations are mentioned in the content of this application, this application is not limited to the situation described in the industry standards or examples, etc., some industry standards or the use of custom methods or the implementation basis described in the examples Embodiments slightly modified above can also achieve the same, equivalent or similar, or predictable implementation effects of the above embodiments. Embodiments applying these modified or deformed data acquisition, processing, output, and judgment methods may still fall within the scope of optional implementation solutions of the present application.

Although the present application provides the operation steps of the method described in the embodiment or the flowchart, more or less operation steps may be included based on conventional or non-inventive means. The sequence of steps enumerated in the embodiments is only one of the execution sequences of many steps, and does not represent the only execution sequence. When executed by an actual device or client product, the methods shown in the embodiments or drawings can be executed sequentially or in parallel (such as a parallel processor or multi-thread processing environment, or even a distributed data processing environment). The term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, product, or apparatus comprising a set of elements includes not only those elements, but also other elements not expressly listed elements, or also elements inherent in such a process, method, product, or apparatus. Without further limitations, it is not excluded that there are additional identical or equivalent elements in a process, method, product or device comprising said elements.

The devices or modules described in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. For the convenience of description, when describing the above devices, functions are divided into various modules and described separately. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and/or hardware, or a module that implements the same function can be implemented by a combination of multiple sub-modules, etc. The device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or integrated. to another system, or some features may be ignored, or not implemented.

Those skilled in the art also know that, in addition to realizing the controller in a purely computer-readable program code mode, it is entirely possible to make the controller use logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded The same function can be realized in the form of a microcontroller or the like. Therefore, this kind of controller can be regarded as a hardware component, and the devices included in it for realizing various functions can also be regarded as the structure in the hardware component. Or even, means for realizing various functions can be regarded as a structure within both a software module realizing a method and a hardware component.

This application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including storage devices.

It can be known from the above description of the implementation manners that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the essence of the technical solution of this application or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, disk , optical disc, etc., including several instructions to enable a computer device (which may be a personal computer, a mobile terminal, a server, or a network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present application.

Each embodiment in this specification is described in a progressive manner, and the same or similar parts of each embodiment can be referred to each other, and each embodiment focuses on the difference from other embodiments. The application can be used in numerous general purpose or special purpose computer system environments or configurations. Examples: personal computers, server computers, handheld or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, including the above A distributed computing environment for any system or device, and more.

While this application has been described by way of example, those of ordinary skill in the art will appreciate that there are many variations and changes to this application without departing from the spirit of this application, and it is intended that the appended claims cover such variations and changes without departing from this application.

Claims (15)

1. one kind is used for HTHP Natural Gas Migration And Accumulation visual detection device, it is characterised in that described device includes：First storage Gas tank, the first container, core holding unit, magnetic nuclear resonance analyzer, hot tank circulating pump, ring pressure tracking pump, gas boosting pump, constant pressure Constant flow pump, wherein,

The core holding unit is used to hold core sample, and the arrival end of the core holding unit is provided with two branch roads：First Road, the second branch road, wherein, the tie point is provided with first air accumulator, and second branch road is provided with first container；

The gas boosting pump is arranged in the tie point between first air accumulator and the core holding unit, for adjusting The pressure for the gas that section is entered in the core holding unit by the tie point；The constant pressure and flow pump is arranged on described On two branch roads, the pressure of gas or liquid in the core holding unit is entered by second branch road for adjusting；

The hot tank circulating pump and ring pressure tracking pump are connected with the core holding unit, wherein, the hot tank circulating pump is used In providing preset temperature for the core holding unit, the ring pressure tracking pump is used to provide default pressure for the core holding unit Power；

The core holding unit is is placed in the magnetic nuclear resonance analyzer without magnetic core holding unit, the core holding unit, institute The distribution parameter that magnetic nuclear resonance analyzer is used to obtain object in the core sample is stated, wherein, the object bag Include at least one of：Water, gas, oil.

2. device according to claim 1, it is characterised in that between the gas boosting pump and the core holding unit Tie point be provided with vavuum pump.

3. device according to claim 2, it is characterised in that between the gas boosting pump and the vavuum pump One branch road is provided with the second air accumulator, wherein, second air accumulator is used for stabilization and enters the rock by the tie point The pressure of gas in heart clamp holder.

4. device according to claim 1, it is characterised in that the port of export of the core holding unit is connected with second container, And the second container is arranged on electronic balance, wherein, the second container is used for the liquid for collecting discharge, the electronics day Equal the quality of the liquid for determining the discharge.

5. device according to claim 4, it is characterised in that be disposed with back-pressure valve and back pressure on the second container Increasing apparatus.

6. device according to claim 4, it is characterised in that be additionally provided with gas flowmeter on the second container, be used for Determine the flow of the gas of discharge.

7. device according to claim 6, it is characterised in that the gas flowmeter is connected with full constituent gas chromatographic analysis Instrument, the composition composition of the gas for determining discharge.

8. device according to claim 1, it is characterised in that the tie point and second route polyether-ether-ketone Material is made.

9. device according to claim 1, it is characterised in that described device also includes processor, the processor and institute State magnetic nuclear resonance analyzer to be connected, the processor is used for the state parameter according to object in the core sample, determines rock The migration state of object in heart sample.

10. a kind of HTHP Natural Gas Migration And Accumulation Visual retrieval that is used for by any one of claim 1 to 9 fills Put, the method for detecting the distribution parameter of gas in rock core in the case of gas drive water, it is characterised in that including：

Obtain the core sample of formation at target locations；

The core sample is pre-processed, pretreated core sample is placed in core holding unit；

By adjusting constant pressure and flow pump, through being filled with water in core holding unit described in second road direction to the pretreated rock core Sample saturation；

The temperature of regulation hot tank circulating pump to the core holding unit reaches preset temperature；Regulation ring pressure tracks pump to the rock core The pressure of clamper reaches preset pressure；

By adjusting gas boosting pump so that the natural gas in the first air accumulator enters the core holding unit with specified pressure In；

By magnetic nuclear resonance analyzer, the distribution parameter of natural gas in the core sample is obtained.

11. according to the method for claim 10, it is characterised in that the distribution shape of natural gas in the core sample is obtained After state parameter, methods described also includes：

The distribution parameter of natural gas in the core sample, determine the seepage flow machine of natural gas in the formation at target locations Reason；

According to the seepage flow mechanism of the natural gas, exploration and development is carried out to the natural gas pool of the formation at target locations.

12. a kind of HTHP Natural Gas Migration And Accumulation Visual retrieval that is used for by any one of claim 1 to 9 fills Put, the method for detecting distribution parameter oily in rock core in the case of oily expelling water, it is characterised in that including：

Obtain the core sample of formation at target locations；

The core sample is pre-processed, pretreated core sample is placed in core holding unit；

The temperature of regulation hot tank circulating pump to the core holding unit reaches preset temperature；Regulation ring pressure tracks pump to the rock core The pressure of clamper reaches preset pressure；

By adjusting constant pressure and flow pump, through being filled with water in core holding unit described in second road direction to the pretreated rock core Sample saturation；

By adjusting constant pressure and flow pump, through being filled with oil in core holding unit described in second road direction；

By magnetic nuclear resonance analyzer, the distribution parameter of the core sample petrochina is obtained.

13. according to the method for claim 12, it is characterised in that obtaining the distribution of the core sample petrochina After parameter, methods described also includes：

According to the distribution parameter of the core sample petrochina, the reservoiring mechanism of oil reservoir in the formation at target locations is determined；

According to the reservoiring mechanism of the oil reservoir, exploration and development is carried out to the oil reservoir of the formation at target locations.

14. a kind of HTHP Natural Gas Migration And Accumulation Visual retrieval that is used for by any one of claim 1 to 9 fills Put, the method for the distribution parameter of rock core reclaimed water in the case of detection water drive oil or water drive gas, it is characterised in that including：

Obtain the core sample of formation at target locations；

The core sample is pre-processed, pretreated core sample is placed in core holding unit；

The temperature of regulation hot tank circulating pump to the core holding unit reaches preset temperature；Regulation ring pressure tracks pump to the rock core The pressure of clamper reaches preset pressure；

By adjusting constant pressure and flow pump, water is filled with into the core holding unit；

By magnetic nuclear resonance analyzer, the distribution parameter of the core sample reclaimed water is obtained.

15. according to the method for claim 14, it is characterised in that obtaining the distribution ginseng of the core sample reclaimed water After number, methods described also includes：

According to the distribution parameter of the core sample reclaimed water, the oil or natural gas in the formation at target locations are exploited.