CN119981819A - A multifunctional rocket-powered formation reforming device - Google Patents
A multifunctional rocket-powered formation reforming device Download PDFInfo
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- CN119981819A CN119981819A CN202411938255.2A CN202411938255A CN119981819A CN 119981819 A CN119981819 A CN 119981819A CN 202411938255 A CN202411938255 A CN 202411938255A CN 119981819 A CN119981819 A CN 119981819A
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Abstract
本发明属于油气开采设备技术领域，具体涉及一种多功能火箭动力的地层改造装置，包括：地层改造主体，所述地层改造主体内具有燃烧负压一体室，所述燃烧负压一体室内具有燃料或空腔，所述地层改造主体的外侧为井筒，所述井筒外侧为地层；所述燃烧负压一体室通过导爆索系统爆炸形成的通道窗口与井筒连通；所述燃料，用于通过所述地层改造主体向井筒输出能量，对所述地层造缝；所述燃烧负压一体室，其空腔用于吸收井筒内的能量，降低井内压力，解除油流通道堵塞；燃烧负压一体室即可作为燃烧室释放高能气体，对地层压裂造缝，也可充当负压腔吸收能量即呈现负压解堵效果，疏通渗流通道。本装置结构简单，费用低廉，功能多样，适用性强。
The present invention belongs to the technical field of oil and gas production equipment, and specifically relates to a multifunctional rocket-powered formation reforming device, comprising: a formation reforming body, wherein the formation reforming body has a combustion negative pressure integrated chamber, wherein the combustion negative pressure integrated chamber has fuel or a cavity, wherein the outside of the formation reforming body is a wellbore, and the outside of the wellbore is a formation; the combustion negative pressure integrated chamber is connected to the wellbore through a channel window formed by the explosion of a detonating cord system; the fuel is used to output energy to the wellbore through the formation reforming body to create seams in the formation; the combustion negative pressure integrated chamber, whose cavity is used to absorb energy in the wellbore, reduce the pressure in the well, and unblock the oil flow channel; the combustion negative pressure integrated chamber can be used as a combustion chamber to release high-energy gas to fracture and create seams in the formation, and can also act as a negative pressure chamber to absorb energy, that is, to present a negative pressure unblocking effect and clear the seepage channel. The device has a simple structure, low cost, diverse functions, and strong applicability.
Description
The application relates to a split application of a Chinese patent application which is filed in 2018 and 08/05, has the application number 201810881482.4 and is named as a multifunctional rocket power stratum reconstruction device. The present application claims priority from chinese patent application No. 201721405507. X filed on 10/28 of 2017.
Technical Field
The invention belongs to the technical field of oil and gas exploitation, relates to a tool for increasing the production of an oil and gas well, and in particular relates to a stratum transformation device of multifunctional rocket power.
Background
After the shaft is established, the hydrocarbon reservoir is opened through perforation, the shaft and the stratum are communicated, and an oil flow channel is formed. Various factors in the exploitation process can cause deterioration of seepage conditions, and influence smoothness of oil flow channels. And the blockage of the channel and the change of the stratum permeability are recovered and improved by professional means, such as fracturing, high-energy gas fracturing, negative pressure unblocking and the like.
The perforations form oil flow channels that are completed by the perforator, particularly a gun-body perforator. The gun body perforator is a civil blasting equipment for oil and gas wells, which consists of a cavity formed by a gun body of the perforating gun capable of bearing explosion impact and a threaded sealing connecting piece (middle joint, gun head and gun tail) and a high-strength alloy steel pipe (such as 32 GrMo) with threads at two ends, and a perforating bullet driven by a shaped charge (such as RDX explosive) and the like. Liu Dawei the main world of oil and gas well perforation technology (2012.4 oil industry press) details various perforating equipment structures, processing and use, wherein the description of the third section of perforating gun in the second chapter describes that the gun body perforating gun generally forms a completely sealed cavity by a gun head, a gun body, a connecting joint and a gun tail. The device has the functions of protecting the components such as the perforating charges, the charge frame, the detonating cord, the detonator and the like in the cavity of the perforating gun from being influenced by underground high pressure, acid and alkali and vibration impact during construction, ensuring the reliable work of initiating explosive devices and bearing the influence of explosive explosion impact of the perforating charges.
Detonating cord for oil and gas well refers to blasting equipment used in petroleum perforation system and mainly used for connection of perforating bullet and perforating bullet, and plays a role of explosion propagation. The explosion-proof cable for oil and gas wells is specially discussed in section 6.3 of chapter 6 of the main edition of Zhang Guoshun, civil explosive and safety, published by national defense industry Press in 2007. The petroleum perforation can be selected according to the explosive loading amount, the explosive type and the detonating cord characteristics of the detonating cord type (see SY/6411 standard). The detonating cord mentioned in the application is all detonating cord for oil and gas well.
The high-energy gas fracturing (HIGH ENERGY GAS Fracture, called HEGF for short) is a stratum modification measure for improving the permeability of near-wellbore zones by utilizing a large amount of high-temperature and high-pressure gas generated by rapid combustion of gunpowder or composite solid rocket propellant in a wellbore to press out a radial multi-fracture system on an underground production layer, so as to increase the yield of an oil-gas well and the injection amount of a water injection well. The composite solid rocket propellant is a powder made up by mixing and solidifying inorganic oxidant (ammonium perchlorate, ammonium nitrate, etc.), combustion agent (aluminium powder, etc.) and high-molecular binder. The polymer binder is generally classified into polysulfide rubber composite propellant, polyurethane composite propellant, hydroxyl-terminated polybutadiene composite propellant, carboxyl-terminated polybutadiene composite propellant, and the like. At present, a high-energy gas stratum reforming device taking a composite solid rocket propellant as energy has a plurality of forms, and has a simple composite propellant grain, wherein the composite propellant grain is arranged in an open screen pipe (application number: CN 200910023430.4), a pulse detonation fracturing device for an ultra-high-temperature high-pressure well is provided by arranging the composite propellant grain in a closed steel pipe and ejecting a pressure relief hole (application number: CN201210327368. X) through a special opening hole, and a StimGun system and various composite perforations for coating the composite propellant outside a perforating gun (USP 5775426) combined with a perforation technology are also provided. The fuel agent for producing high-energy gas in the well needs to be heat-resistant and waterproof when contacting with well fluid, and needs to be specially prepared, while under the sealing condition, the agent is not needed to be waterproof, but a special initiating element (a perforating bullet and the like) is needed to open a pressure relief hole, and the form of the agent is needed to be specially designed when being combined with a perforating gun component. The built-in composite perforator has the advantages that the gunpowder and the perforating charges are simultaneously arranged in the gun body of the perforating gun, the gun body cavity is required to bear the explosion and explosive deflagration impact of the perforating charges, a specially designed pressure relief channel is required, the structure is complex, the output gas energy is limited, and the stratum transformation effect is influenced.
The dynamic negative pressure unblocking is another method of dredging seepage passage and has the principle of fast absorbing medium in shaft via the cavity of the negative pressure device to make the pressure in the shaft drop instantaneously to produce instantaneous impact reflux and flushing the perforation canal and the compaction belt around the canal, and is used together with perforation. At present, most of the negative pressure devices adopted at home and abroad are two types of punching bullet hole pressure relief and piston hole pressure relief. Patent CN201439709 discloses a dynamic negative pressure perforator, in which a punching bullet is installed on a bullet frame, and the punching bullet is a special bullet which only opens the gun body and does not damage the casing and cement sheath of the oil-gas well, also called as "open hole bullet". After the perforating gun is detonated, the number of the perforated holes on the gun body is more than that of the original perforating gun, so that the pressure relief space is enlarged, the pressure of a shaft is released, and the dynamic negative pressure is realized. Patent CN101994493 discloses a dynamic pressure reducing device, which is installed at the lower end of a perforator, detonation pressure generated after the perforator detonates pushes a striking rod to move downwards, then a piston is pushed to move downwards, an inner cavity of the pressure reducing device is communicated with a lateral through hole positioned at the middle part of an opening, well fluid in a shaft is led to enter the pressure reducing cavity through the opening, and then the pressure in the shaft is reduced, so that dynamic negative pressure is realized. The existing negative pressure device has the following defects that (1) a pressure relief device for opening holes and relieving pressure is adopted, a large number of punching bullets are added in the perforator, a large number of explosion gases are additionally generated, the negative pressure effect is reduced, and the cost is increased. (2) The pressure relief device for perforating and relieving pressure by adopting the piston has the advantages of complex structure, more intermediate links such as the impact rod, the piston and the like, slower perforating speed on the pressure relief device and smaller area of a drainage duct, and in addition, the effect of establishing negative pressure is not obvious during perforation operation, so that the overall process effect of dynamic negative pressure perforation is reduced, and the advantages of dynamic negative pressure perforation operation cannot be fully reflected.
The blocking removal and stratum transformation technology is limited by the performance of the medicament or the complex effect of the device, so that the product cost and the operation cost are increased, the operation is complex, and the application is limited.
Disclosure of Invention
Aiming at the defects of the technology, the invention provides the plugging removing and stratum reforming device which has a simple structure and is universally applicable.
The invention provides a stratum modification device of multifunctional rocket power, which comprises a stratum modification main body, wherein a combustion negative pressure integrated chamber is arranged in the stratum modification main body, a fuel or a cavity is arranged in the combustion negative pressure integrated chamber, a shaft is arranged on the outer side of the stratum modification main body, a stratum is arranged on the outer side of the shaft, the combustion negative pressure integrated chamber is communicated with the shaft through a passage window formed by explosion of a detonating cord system, the fuel is used for outputting energy to the shaft through the stratum modification main body and making a seam on the stratum, and the cavity of the combustion negative pressure integrated chamber is used for absorbing the energy in the shaft, reducing the pressure in the shaft and relieving the blockage of an oil flow passage.
Preferably, the detonating cord system comprises detonating cords and detonating cord knots (explosive bars), wherein the detonating cord knots are formed by stacking and gathering the detonating cords and are used for forming the channel window.
Preferably, the combustion negative pressure integrated chamber is provided with an inner pipe, and the fuel is arranged in the inner pipe.
Preferably, the outer part of the combustion negative pressure integrated chamber is provided with a shell, the shell is provided with a groove area, the groove area (weak area) is a part which is relatively easy to deform under specific impact by reducing the thickness of part of shell material (more than 1/2 wall thickness) compared with the wall thickness of the shell, the inner side of the inner wall of the groove area is provided with the detonating cord knot, and the detonating cord knot is used for detonating the groove area to form a channel window so as to communicate the combustion negative pressure integrated chamber with the shaft.
Preferably, the outer side of the inner tube is provided with a shell, a gap is arranged between the inner tube and the shell, and the detonating cord system passes through the gap.
Preferably, the outside of the inner tube and/or the inside of the outer shell is provided with a heat insulating layer.
The two ends of the stratum transformation main body are respectively provided with a connecting joint, the 2 connecting joints are respectively provided with a first detonating cord hole and a second detonating cord hole, the detonating cords enter from the first detonating cord holes and penetrate out from the second detonating cord holes, and the detonating cords are used for transmitting detonation energy.
The invention has the beneficial effects that:
according to the underground condition and the well bore condition, the invention changes the stratum transformation device from energy absorption to energy output by adjusting the quantity of fuel from nothing to nothing, thereby realizing the change from negative pressure blocking removal to high-energy gas fracturing and seam making functionally. The invention is convenient to be connected with other fire tools, has strong adaptability and can be matched with various processes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-functional rocket powered device for modifying a stratum.
FIG. 2 is a schematic diagram of the operation of a multi-functional rocket powered device for modifying a formation.
FIG. 3 is a schematic view of the negative pressure deblock tool of FIG. 1 without the fuel accessible cavity of the present invention.
Fig. 4 is a schematic view of a detonating cord knot in the detonating cord system of fig. 1 of the present invention.
Fig. 5 is an enlarged view of a portion of the detonating cord of fig. 1 in combination with a recessed region of the housing.
FIG. 6 is a schematic diagram of a multi-functional rocket powered formation modification device in combination with a perforator in accordance with the present invention.
Fig. 7 is a cross-sectional view of a perforating gun center joint (the connector joint of fig. 1).
Fig. 8 is a cross-sectional view of a perforating gun body (the housing in fig. 1).
FIG. 9 is a schematic view of a perforating gun cavity (combustion negative pressure integrated chamber of FIG. 1).
FIG. 10 is a schematic diagram of a perforating gun configuration.
Reference numerals illustrate:
1. the device comprises a connecting joint, a combustion negative pressure integrated chamber, a detonating cord, an inner tube, 5, fuel, 6, detonating cord knots (explosive strips), 7, a heat insulation layer, 8, a groove area (weak area) and 9, and a shell.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "coupled," and "connected" are used in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium, or may be in communication with the interior of two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The multifunctional rocket power stratum modification device comprises a stratum modification main body, wherein a combustion negative pressure integrated chamber 2 is arranged in the stratum modification main body, a fuel 5 or a cavity is arranged in the combustion negative pressure integrated chamber 2, a shaft is arranged on the outer side of the stratum modification main body, a stratum is arranged on the outer side of the shaft, the combustion negative pressure integrated chamber 2 is communicated with the shaft through a passage window formed by explosion of a detonating cord system, the fuel 5 is used for outputting energy to the shaft through the stratum modification main body to form a seam on the stratum, and the cavity of the combustion negative pressure integrated chamber 2 is used for absorbing the energy in the shaft, reducing the pressure in the shaft and relieving the blockage of an oil flow passage. According to the underground condition and the well bore condition, the invention changes the stratum reforming main body from energy absorption to energy output by adjusting the quantity of part of the fuel of the device from nothing to nothing, thereby realizing the change from negative pressure blocking removal to high-energy gas fracturing and seam making functionally.
In fig. 1, the detonating cord system comprises detonating cord 3 and detonating cord knots 6 (explosive strips), the detonating cord knots 6 being formed by overlapping and gathering the detonating cord 3 for forming the passage window.
In fig. 1, an inner tube 4 is provided inside the combustion negative pressure integrated chamber 2, and a fuel 5 is provided inside the inner tube 4.
In fig. 1, the outer side of the combustion negative pressure integrated chamber 2 is provided with a shell 9, the shell 9 is provided with a groove area 8, the groove area (weak area) is a part which is relatively easy to deform under specific impact by reducing the thickness of part of shell material (more than 1/2 wall thickness) compared with the wall thickness of the shell, and the groove area 8 communicates the combustion negative pressure integrated chamber 2 with a shaft through a channel window exploded by a detonating cord system.
In fig. 1, the outer side of the inner tube 4 is provided with a shell 9, a gap is arranged between the inner tube 4 and the shell 9, and a detonating cord system passes through the gap.
In fig. 1, the outside of the inner tube 4 and/or the inside of the outer shell 9 has a thermal insulation layer 7.
In fig. 1, two ends of a stratum modification main body are respectively provided with a connecting joint 1, two connecting joints 1 are respectively provided with a first detonating cord hole and a second detonating cord hole, and detonating cords enter from the first detonating cord hole and penetrate from the second detonating cord hole.
Referring to the working principle diagram of the stratum modification device of the multifunctional rocket power provided by the invention shown in fig. 2, external detonation energy (detonating or explosion propagation) enters the device (such as arrow II) through a central hole (a first detonating cord hole) of a connecting joint 1, is transmitted from one end of a detonating cord 3 (such as arrow I), propagates along the detonating cord 3 wound on an inner tube 4, reaches a groove area 8 (a weak area) to excite the detonating cord junction 6 to explode (such as arrow III), and continues to backwards propagate and is output from the other end of the detonating cord 3 (such as arrow V) through a second detonating cord hole. The detonating cord 6 explodes, the explosion energy radially cuts the groove region 8 (weak region), the shell wall at the broken groove region 8 (weak region) forms a channel window, and the explosion energy excites the fuel 5 at the channel window to burn, and the generated gas energy is ejected outwards (arrow IV) from the channel window (fire hole) to enter the shaft to reform the stratum. The number of passage windows is set according to the amount of fuel and generated gas.
It should be noted that the combustion negative pressure integrated chamber 2 shall be referred to as a combustion chamber when used for energy output and as a negative pressure chamber when used for energy intake, and the corresponding passage windows shall be referred to as a flame-out port and a negative pressure window, respectively.
Example 1A multifunctional rocket power stratum reconstruction device combining with FIG. 1, specifically as energy output, comprises a connecting joint 1, a combustion negative pressure integrated chamber 2 (combustion chamber), a detonating cord 3, an inner tube 4, fuel 5, a detonating cord knot 6 (explosive bar) and a heat insulation layer 7. The combustion negative pressure integrated chamber 2 is a device cavity space which is jointly trapped by a thick-wall high-strength alloy steel pipe with threaded sealing structures at two ends and a connecting joint 1, wherein an inner pipe 4 is fixed, fuel 5 (composite solid rocket propellant) is filled in the inner pipe 4, a heat insulation layer 7 (medium) is arranged between the inner pipe 4 and a shell 9 of the combustion negative pressure integrated chamber 2, a detonating cord 3 penetrates through a gap between the inner pipe 4 and the shell 9 of the combustion negative pressure integrated chamber 2, a detonating cord knot 6 is formed at the inner wall of a groove region 8 (weak region) of the shell of the combustion negative pressure integrated chamber 2, and two ends of the detonating cord 3 penetrate through a central hole of the connecting joint 1 to be connected with other initiating devices (detonating devices or detonating devices) to transfer detonation energy. The recessed area 8 (weakened area) is formed by reducing the thickness of part of the shell material, usually 1/3 of the original thickness, and the number, size and position of the parts which are easily deformed by the stress under a specific impact are set according to the specific situation, in contrast to the thick wall of the shell of the combustion negative pressure integrated chamber 2, and the heat insulating layer 7 (medium) can be vacuum or any gaseous or solid heat insulating material. The combustion negative pressure integrated chamber 2 can be designed to adopt a threaded sealing structure of a perforating gun body (figure 8), the connecting joint 1 can be a perforating gun head, a gun tail, a middle joint or the like, and the connecting joint can be generally in a middle joint (figure 7) structure or can be finely adjusted (such as an inner hole is enlarged) on the basis of the structure according to the specific determination of the connecting part.
Embodiment 2 As shown in fig. 3, the embodiment provides a dynamic negative pressure unblocking tool for generating negative pressure, which comprises a combustion negative pressure integrated chamber 2 (a negative pressure cavity), a detonating cord 3, an inner tube 4, a detonating cord knot 6 and a connecting joint 1, wherein the device is formed without fuel 5 and a heat insulation layer, is only used as a pressure reducing cavity for forming the negative pressure of a shaft, and a channel window is used as a negative pressure channel. The connection joints 1 (hollow) on the two sides are used for realizing the serial connection of a plurality of negative pressure cavities or are connected with a perforator (figure 10), and the use mode of the negative pressure cavity is in accordance with the perforation process flow. In operation, external detonation energy is transmitted from one end of the detonating cord 3 to excite the detonating cord knot 6 to explode and open the groove area 8 to form a channel window, and medium in the well enters the cavity of the combustion negative pressure integrated chamber 2, so that the pressure in the well shaft is reduced, and a dynamic negative pressure effect is generated, namely, the dynamic negative pressure perforation is formed.
Example 3 As shown in figure 6, the embodiment provides a mode of combining the device with the perforator, namely the device for filling the fuel 5 is connected with the perforator (figure 10) through the connecting joints 1 at two sides, the detonating cords 3 uniformly detonate, and when the perforation is carried out, the energy of burning the fuel 5 is exploded through the detonating cord 6 to open the groove region 8 to form a channel window to be released into a shaft, so that the pressure in the shaft is increased to form a seam on a stratum, and a stratum transformation effect is generated. The application mode of the method accords with the common perforation process flow and is basically the same as the composite perforation construction mode. In this way, the combustion negative pressure integrated chamber 2 can contain more fire-fighting amount, so that the stratum modification effect formed by the high-energy gas is far better than that of the common composite perforation.
It should be noted that fig. 7 to 10 are designs commonly adopted in the perforation tools in the prior art, wherein the perforator (fig. 10) sequentially comprises a detonating cord, a gun head, a gun body, a positioning disc, a bullet rack, a perforating bullet and a gun tail from left to right, fig. 9 is a perforation gun connected with a middle joint (fig. 7) and a gun body (fig. 8), the structure of the connecting joint is commonly shown in fig. 7, the design of the sealing body bearing of the gun body is applied to the structure of fig. 8, and the gun body (fig. 8) is commonly made of 32GrMo alloy steel pipe materials, so that the impact of perforation explosion can be borne without causing structural damage of the tool. The materials and designs, connector structures, and internal connections referred to herein may be extended to the materials and structures associated with the perforating gun.
The initiating explosive device is only fuel and detonating cord, the fuel is composite solid rocket propellant powder, the detonating cord is a general necessary initiating explosive material for oil fields, and the initiating explosive device can be regarded as a special material of the initiating explosive device, so that the initiating explosive device is regarded as only one initiating explosive device (composite solid rocket propellant) and is convenient to manage and use. The heat insulation layer and the sealed combustion chamber of the invention greatly reduce the waterproof and temperature-resistant properties of the propellant, thereby reducing the material cost.
The connecting joint and the cavity part adopt the prior perforating gun structure, are suitable for being combined with the prior pipe string, and increase the universality of the device. The detonation network of the device is uniformly detonated by the detonating cord, input and output are completed through the detonating cord, the detonation network is convenient to connect with other fire tools, the adaptability is strong, and the detonation network can be matched with various processes.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
Claims (6)
1. The utility model provides a multi-functional rocket power's stratum transformation device, includes stratum transformation main part, its characterized in that:
The fuel-fired negative pressure integrated chamber (2) is formed in the stratum transformation main body, the outer side of the stratum transformation main body is a shaft, the outer side of the shaft is a stratum, a shell (9) is arranged outside the stratum transformation main body, a groove area (8) is formed in the shell (9), the groove area is formed by reducing the thickness of a material more than 1/2 of the wall thickness of the shell (9) relatively to the wall thickness of the shell (9), and the part which is relatively easy to deform under a specific impact is formed in the stratum transformation main body, wherein the fuel (5) or a cavity is formed in the stratum transformation negative pressure integrated chamber (2);
The explosion system comprises an explosion cable (3) and an explosion cable knot (6), wherein the explosion cable knot (6) is formed by overlapping and gathering the explosion cable (3), and external explosion energy is transmitted from one end of the explosion cable (3) to excite the explosion cable knot (6) to explode and open the groove region (8) to form the channel window;
the fuel (5) is used for outputting energy to the shaft through the stratum modification main body and making a seam on the stratum;
and the combustion negative pressure integrated chamber (2) is used for absorbing energy in the shaft, reducing the pressure in the well and relieving the blockage of an oil flow passage.
2. A multifunctional rocket powered earth formation modification device according to claim 1, characterized in that the inner side of the inner wall of the groove area (8) is provided with the detonating cord knot (6), the detonating cord knot (6) is exploded and broken down to form the passage window to communicate the combustion negative pressure integrated chamber (2) with the shaft.
3. A multifunctional rocket powered earth formation modification device according to claim 1, characterized in that said combustion negative pressure integrated chamber (2) has an inner tube (4) therein, said fuel (5) being within said inner tube (4).
4. A multifunctional rocket powered earth formation modification apparatus according to claim 3, characterized in that said inner tube (4) has said outer casing (9) on the outside thereof, a gap is provided between said inner tube (4) and said outer casing (9), and said detonating cord system passes through said gap.
5. A multifunctional rocket powered earth formation modification device according to claim 4, characterized in that the outside of the inner tube (4) and/or the inside of the outer casing (9) has a heat insulating layer (7).
6. The multifunctional rocket power stratum reconstruction device according to claim 1 is characterized in that two ends of the stratum reconstruction main body are respectively provided with a connecting joint (1), 2 connecting joints (1) are respectively provided with a first detonating cord hole and a second detonating cord hole, the detonating cord (3) enters from the first detonating cord hole and penetrates out from the second detonating cord hole, and the detonating cord (3) is used for transmitting detonation energy.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721405107 | 2017-10-28 | ||
| CN201721405107X | 2017-10-28 | ||
| CN201810881482.4A CN109723419A (en) | 2017-10-28 | 2018-08-05 | Stratum reconstruction device of multi-functional rocket power |
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| CN201810881482.4A Division CN109723419A (en) | 2017-10-28 | 2018-08-05 | Stratum reconstruction device of multi-functional rocket power |
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| CN201821250592.2U Active CN208702392U (en) | 2017-10-28 | 2018-08-05 | A kind of multi-functional rocket-powered stratum transformation device |
| CN202411938255.2A Pending CN119981819A (en) | 2017-10-28 | 2018-08-05 | A multifunctional rocket-powered formation reforming device |
| CN201810881482.4A Pending CN109723419A (en) | 2017-10-28 | 2018-08-05 | Stratum reconstruction device of multi-functional rocket power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2098234B (en) * | 1981-05-08 | 1984-01-11 | Coal Industry Patents Ltd | Formation of wells for the in-situ conversion of underground minerals |
| CN1038269C (en) * | 1993-03-15 | 1998-05-06 | 西安奥地能源技术研究所 | Wax removing bullet for oil well |
| CN2276559Y (en) * | 1996-09-25 | 1998-03-18 | 西安石油学院 | Perforation-high energy gas fracturing device |
| CN101220739B (en) * | 2007-01-12 | 2011-07-20 | 中国石油集团川庆钻探工程有限公司测井公司 | Dynamic negative pressure device for oil gas well |
| CN102031952B (en) * | 2010-11-26 | 2013-12-25 | 中国航天科技集团公司川南机械厂 | Multi-stage perforation supercharging method |
| CN106014353A (en) * | 2016-05-20 | 2016-10-12 | 大庆华翰邦石油装备制造有限公司 | Energy-absorption plug-removal perforation device |
| RU2633883C1 (en) * | 2016-06-27 | 2017-10-19 | Общество с ограниченной ответственностью "ПерфоТерм" | Perforation and bottomhole treatment method and device for its implementation |
-
2018
- 2018-08-05 CN CN201821250592.2U patent/CN208702392U/en active Active
- 2018-08-05 CN CN202411938255.2A patent/CN119981819A/en active Pending
- 2018-08-05 CN CN201810881482.4A patent/CN109723419A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN208702392U (en) | 2019-04-05 |
| CN109723419A (en) | 2019-05-07 |
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