CN108801745B - Suspended solid content testing device - Google Patents

Abstract

The invention discloses a suspended solid content testing device, and belongs to the field of water injection well sampling devices. The device for testing the content of the suspended solids comprises a connecting module, a sampling module, a filtering module, a pushing module and a discharging module, wherein the connecting module, the sampling module and the discharging module cooperate to enable the injection liquid at the end of the production pipeline to flow through the connecting module, enter the sampling module and be discharged through the discharging module, so that the high-pressure closed sampling of the sampling liquid is realized; through the combined action of filtration module, promotion module and sampling module make the sample liquid in the sampling module flow into filtration module under the effect of promotion module, realize the filtration of suspended solid in the sample liquid, whole suspended solid content testing arrangement has realized the suspended solid content test of sample liquid under the airtight sampling condition of high pressure, guarantees that sample liquid does not receive external environment's influence for the suspended solid content measuring result is accurate.

Description

A suspended solids content testing device

technical field

The invention belongs to the field of water injection well sampling devices, in particular to a suspended solid content testing device.

Background technique

In the process of oilfield water injection development, the injected water will inevitably contain suspended solids. If the suspended solids content is too high, it will affect the quality of the injected water and further affect the development effect of the oilfield. Therefore, the content of suspended solids is one of the main water quality control indicators that are most concerned by various oil fields at present, and it is also a key indicator for water quality improvement. The suspended solids content testing device is a specific device specially used to detect the suspended solids content.

At present, the widely used method for testing suspended solids content at home and abroad is membrane filtration. The testing device for suspended solids content mainly includes a sampling module and a filter membrane with a known pore size. The water obtained by sampling is stored in the sampling module, and the The water is poured through the filter membrane, so that the filter membrane retains the suspended solids in the water sample. The suspended solids content can be tested by weighing the filter membrane before and after filtration.

In the process of realizing the present invention, the present inventor found that there are at least the following problems in the prior art:

Because the method of measuring suspended solids content by membrane filtration method is easily affected by the external environment during the sampling process, for example, suspended solids in the air can fall into the sampling liquid, which will affect the accuracy of measuring the suspended solids content in the sampling liquid. It makes it difficult for the sampling water to keep the original state of the on-site water samples, which in turn makes the measurement of suspended solids inaccurate.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a suspended solids content testing device, which realizes the suspended solids content testing under the condition of high-pressure airtight sampling.

Specifically, it includes the following technical solutions:

A suspended solids content testing device, characterized in that the device comprises a connection module, a sampling module, a filter module, a push module and a discharge module, wherein,

The connection module is connected with the sampling module, the discharge module is disposed on one side of the first end of the sampling module, the filter module is disposed on the other side of the first end of the sampling module, and the discharge module opposite to the filtering module;

The connecting module includes a connecting rod and a liquid passing pipe, the interiors of the connecting rod and the liquid passing pipe are hollow, the liquid passing pipe is arranged in the connecting rod, and the liquid passing pipe is connected with the pushing module .

Further, the device further includes a silk head, the filter module includes a first valve and a sand core filter, one end of the first valve is connected to the sampling module, and the other end of the first valve is connected to the The sand core filter is connected.

Further, the sand core filter includes a sand core, a sand core base and a gland, the sand core is arranged in the sand core base, and the gland is connected to the sand core base.

Further, the discharge module includes a first joint, a second valve and a drain pipe, one end of the first joint is connected to the sampling module, and the other end of the first joint is connected to one end of the second valve connected, and the other end of the second valve is connected with the drain pipe.

Further, the discharge module further includes a rotating base and a rotating pressure cap, the interior of the rotating base is hollow, one end of the rotating base is connected to the sampling module, and the other end of the rotating base is suitable for connecting with the rotating pressure cap. Cap fit.

Further, the push module includes a piston and a push rod, one end of the piston is connected with the liquid passage pipe, and the other end of the piston is connected with the push rod.

Further, a plurality of through holes are formed in the pipe wall of one end of the liquid-passing pipe connected with the piston.

Further, the device further includes a pressure measuring module, and the pressure measuring module is arranged on the connecting rod.

Further, the pressure measuring module includes a pressure gauge, a fourth joint and a pressure gauge seat, the pressure gauge seat is connected with the connecting rod, and the fourth joint is arranged between the pressure gauge and the pressure gauge seat. between.

Adopt the test method of suspended solids content test device, it is characterized in that, described method comprises:

Connect the connection module with the joint at the end of the production line, open the third valve at the end of the production line, so that the water in the production line flows into the connection module, and under the action of hydraulic pressure, the liquid flowing into the connection module driving the liquid passage pipe to move, and the liquid passage pipe drives the push module to move, so that the push module moves to one end of the sampling module;

Open a second valve in the drain module so that the water in the sampling module is drained from the drain module;

The third valve at the end of the production line is closed, the second valve in the discharge module is closed, the filter module is activated, and the push module is pushed so that the push module moves toward the other end of the sampling module.

The beneficial effects of the technical solutions provided by the embodiments of the present invention:

The suspended solids content testing device of the present invention comprises a connection module, a sampling module, a filter module, a push module and a discharge module, and through the synergistic action of the connection module, the sampling module and the discharge module, the injection liquid at the end of the production pipeline flows through the connection module and enters the sampling module, And it is discharged through the discharge module to achieve high-pressure airtight sampling of the sampling liquid; through the joint action of the filter module, the push module and the sampling module, the sampling liquid in the sampling module flows into the filter module under the action of the push module to achieve suspension in the sampling liquid Solid filtration, the entire suspended solids content testing device realizes the suspended solids content test of the sampling liquid under the high-pressure airtight sampling condition, ensures that the sampling liquid is not affected by the external environment, and makes the suspended solids content test result accurate.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a modular schematic diagram of a suspended solids content testing device according to an embodiment of the present invention.

The reference numbers in the figure represent:

1. Production pipeline end; 2. Connection module; 3. Filtration module; 4. Sampling module; 5. Discharge module; 6. Pushing module; 7. Pressure measuring module; 11. Production pipeline; 12. Second joint; 13. The third valve; 14, the third joint; 15, the sealing ring of the third joint; 21, the gland; 22, the connecting rod; 23, the connecting rod; 24, the liquid passage; 31, the wire head; 32, the gland; 33 34, the first clamp; 35, the sand core; 36, the sand core base; 37, the first valve; 38, the second clamp; 39, the second bolt; 310, the nut; 311, the sand Core handle; 41, sampling cylinder; 42, cylinder head sealing ring; 43, cylinder head; 51, rotary seat; 52, rotary pressure cap; 53, first joint sealing ring; 54, first joint; 55, second valve ;56, drain pipe; 61, piston; 62, piston seal; 63, bearing; 64, circlip; 65, push rod; 66, first bolt; 67, handle; 71, pressure gauge; 72, fourth Joint; 73, pressure gauge seat; 74, pressure gauge seal.

Detailed ways

In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides a suspended solids content testing device. Its modular schematic diagram, as shown in FIG. 1 , includes a connection module 2 , a sampling module 4 , a filter module 3 , a push module 6 and a discharge module 5 .

Specifically, the connection module 2 is connected to the sampling module 4 , a discharge module 5 is disposed on one side of the first end of the sampling module 4 , a filter module 3 is disposed on the other side of the first end of the sampling module 4 , and the discharge module 5 is connected to the filter module 3 relatively;

The connecting module 2 includes a connecting rod 23 and a liquid passing pipe 24 . Both the connecting rod 23 and the liquid passing pipe 24 are hollow inside.

The test method of the suspended solids content test device provided by the embodiment of the present invention is:

Connect the connection module 2 to the joint of the production line end 1, and open the third valve of the production line end 1, so that the water in the production line flows into the connection module 2. Under the action of water pressure, the water flowing into the connection module 2 is driven through The liquid pipe 24 moves, and the liquid passing pipe 24 drives the push module 6 to move, so that the push module 6 moves to one end of the sampling module 4;

Open the second valve in the discharge module 5, so that the water in the sampling module 4 is discharged from the discharge module 5, and realize high-pressure airtight sampling of the injected liquid;

Close the third valve at the end 1 of the production line, close the second valve in the discharge module 5, start the filter module 3, and push the push module 6, so that the push module 6 moves to the other end of the sampling module 5 to achieve suspended solids in the sampling liquid filtering;

The entire suspended solids content testing device realizes the suspended solids content testing of the sampling liquid under the high-pressure airtight sampling condition, ensuring that the sampling liquid is not affected by the external environment, and making the suspended solids content testing result accurate.

In order to better realize the function of the suspended solids content test device, the module is embodied, as shown in Figure 1, as follows:

The filter module 3 includes a first valve 37 and a sand core filter. One end of the first valve 37 is connected to the sampling module 4 , and the other end of the first valve 37 is connected to the sand core filter, wherein the sand core filter includes the sand core 35 , a sand core base 36 and a gland 32, the sand core 35 is arranged in the sand core base 36, and the gland 32 is connected with the sand core base 36, wherein, the sand core 35 has a microporous filter membrane of φ0.45μm, if not sampling External pressure is applied to the sampling liquid in the module 4, and the sampling liquid cannot be filtered out from the microporous membrane, and at the same time, the size of the suspended solid particles is limited.

In the above suspended solids content testing device, the sand filter further includes a first clamp 34, a second clamp 38, a second bolt 39 and a nut 310, and the first clamp 34 and the second clamp 38 are sleeved on the The gland 32 and the core base 36 are used to lock the gland 32 and the core base 36. After the gland 32 and the core base 36 are locked, the sand core 35 can be quickly installed; the second bolt 39 is used for The first clamp 34 and the second clamp 38 are fastened, and the nut 310 is adapted to cooperate with the second bolt 39 .

In the above suspended solids content testing device, the sand core filter further includes a sand core handle 311 , and the sand core handle 311 is sleeved on the nut 310 to facilitate applying force to the nut 310 .

In the above-mentioned suspended solids content testing device, the sand core filter further comprises a sand core sealing ring 33, a groove is formed on the outer wall of the contact end of the sand core base 36 and the gland 32, and the sand core sealing ring 33 is suitable for matching with the groove, Used to seal the sand core base 36 and the gland 32.

In the above-mentioned suspended solids content testing device, the filter module 3 further includes a wire head 31, the wire head 31 is arranged between the sampling cylinder 41 and the first valve 37, and the sampling cylinder 41 connected with the wire head 31 is provided with a through hole, the The position of the through hole is set at one end of the sampling cylinder 41 close to the connecting rod 23 near the cylinder mouth to prevent the piston sealing ring 62 from falling into the through hole and causing the piston sealing ring 62 to be damaged by friction.

In the above suspended solids content testing device, the discharge module includes a first joint 54, a second valve 55 and a drain pipe 56, one end of the first joint 54 is connected to the sampling module 4, specifically, one end of the first joint 54 is connected to the sampling module 4. The sampling cylinder 41 is connected, the other end of the first joint 54 is connected with one end of the second valve 55, and the other end of the second valve 55 is connected with the drain pipe 56, wherein the second valve 55 is preferably a right-angle needle valve, which can be opened by opening The second valve 55 can realize the discharge of the sampling liquid in the sampling cylinder 41 .

It should be noted that the flow rate of the drain pipe 56 can be adjusted by the second valve 55, and the drain direction of the drain pipe 56 can be set according to actual needs, which can avoid the injury to the operator caused by the wind blowing and splashing the drain fluid.

In the above-mentioned suspended solids content testing device, the discharge module further includes a rotating base 51 and a rotating pressure cap 52. The interior of the rotating base 51 is hollow, one end of the rotating base 51 is connected to the sampling module 4, and the other end of the rotating base 51 is suitable for connecting with the rotating pressure cap 51. The cap 52 is matched, the rotating base 51 is used to connect the sampling module 4 and the first joint 54 , and the rotating pressing cap 52 is used to protect the connection between the rotating base 51 and the first joint 54 .

In the above suspended solids content testing device, the discharge module 5 further includes a first joint sealing ring 53, the outer wall of one end of the first joint 54 close to the sampling module 4 is provided with a groove, and the first joint sealing ring 53 is suitable for matching with the groove , used to seal the first joint 54 and the rotating seat 51 .

In the above suspended solids content testing device, the push module 6 includes a piston 61 and a push rod 65. One end of the piston 61 is connected to the liquid passage 24, and the other end of the piston 61 is connected to the push rod 65. In this embodiment, the push rod 65 is preferably a lead screw.

It should be noted that the piston 61 is provided with a first groove, and the first groove is adapted to cooperate with the piston sealing ring 62 for sealing the piston 61 and the inner wall of the sampling cylinder 41 .

In the above suspended solids content testing device, the piston 61 includes a bearing 63 and a circlip 64 . The circlip 64 is sleeved outside the bearing 63 .

In the above suspended solids content testing device, the inside of the push rod 65 is hollow, and the push rod 65 is provided with a first bolt 66. The first bolt 66 is preferably a pullable bolt. When the device needs maintenance, the first bolt 66 is pulled by pulling the first bolt 66 The piston 61 can be easily taken out, the internal parts of the sampling module 4 can be easily maintained, and the piston sealing ring 62 can be easily replaced.

In the above-mentioned suspended solids content testing device, the push module 6 further includes a handle 67, and the handle 67 is connected with the push rod 65 to facilitate dragging the push rod 65 and exert force on the push rod 65. When not in use, the push rod 65 It is disconnected from the handle 67 .

It should be noted that, in this embodiment, the push rod 65 is used to push the piston 61 to perform mechanical extrusion instead of the suction of the vacuum pump, so that the wellhead test can be realized without power supply, which is more practical and convenient.

In the above-mentioned suspended solids content testing device, a number of through holes are formed in the pipe wall of one end of the liquid-passing pipe 24 connected to the piston 61, and the liquid flowing from the production pipeline 11 can flow into the liquid-passing pipe 24, under the action of hydraulic pressure. , the liquid can be sprayed out from several through holes and enter the sampling cylinder 41, forming turbulent flow in the sampling cylinder 41, cleaning the sampling cylinder 41, when the liquid is discharged from the discharge module 5, it can avoid the high-pressure liquid directly entering the discharge module 5 , causing the sampling cylinder 41 to form a dead water area, destroying the representativeness of the sampling liquid.

In the above suspended solids content testing device, the device further includes a pressure measuring module 7 , which is arranged on the connecting rod 23 and is used to measure the pressure value of the liquid flowing into the sampling cylinder 41 .

In the above suspended solids content testing device, the pressure measuring module 7 includes a pressure gauge 71, a fourth joint 72 and a pressure gauge base 73, the pressure gauge base 73 is connected to the connecting rod 23, and the fourth joint 72 is provided on the pressure gauge 71 and the pressure gauge Between the seats 73 , the connection between the pressure gauge seat 73 and the fourth joint 72 is convenient, and the disassembly and assembly of the pressure gauge 71 is convenient.

In the above-mentioned suspended solids content testing device, the pressure measuring module 7 further includes a pressure gauge sealing ring 74, and the inner wall of the pressure gauge gauge seat 73 is provided with a groove, and the groove is suitable for cooperating with the pressure gauge sealing ring 74 for sealing the pressure gauge The watch seat 73 and the fourth connector 72 .

In the above suspended solids content testing device, the connection module 2 further includes a connecting rod 22 , and the connecting rod 22 is arranged at one end of the connecting rod 23 and is suitable for mating with the joint of the production line end 1 .

In the above suspended solids content testing device, the connection module 2 further includes a pressure cap 21 , which is sleeved on one end of the connecting rod 22 to protect the fitting part of the connecting rod 22 and the production line end 1 from being damaged.

It should be noted that the suspended solids content testing device is a stainless steel sampler, which can effectively prevent corrosion and withstand high pressure.

The device at the wellhead matched with the suspended solids content testing device includes a production pipeline 11, a second joint 12, a third valve 13 and a third joint 14. The pipe wall of the production pipeline 11 is provided with a through hole, and one end of the second joint 12 is The through holes are connected, and the connection method can be flange connection, screw connection or welding, and the other end of the second joint 12 is connected with one end of the third valve 13, wherein the third valve 13 is always in a closed state, and the other end of the third valve 13 is in a closed state. One end is provided with a third joint 14, the third joint 14 is suitable for matching with the connecting rod 22, the inner wall of the third joint 14 is provided with a groove, and the groove is suitable for matching with the third joint sealing ring 15 for sealing the third joint 14. Joint 14 and connecting rod 22 .

In actual use, the suspended solids content testing device is carried to the wellhead.

First, connect the device. Connect the connecting rod 23 to the third joint 14 of the production line end 1, and adjust the direction of the drain pipe 56 according to the wind direction, so that the operator stands at the position of the upper air outlet.

Next, check the tightness of the device. Make sure that the connecting rod 22 and the third joint 14 are in a sealed state, and make sure that the second valve 55 and the first valve 37 are in a closed state. Generally, for the sake of safety, prevent the first valve 37 from not being closed, so that the high-pressure liquid enters the sampling cylinder 41. After impact damage is caused to the sand core 35, the sand core 35 can be taken out first in the early sampling stage.

Again, the liquid at the wellhead is sampled. Open the third valve 13 of the production line end 1, so that the liquid in the production line 11 flows into the connecting rod 23 and the liquid passing pipe 24. Under the action of the liquid pressure and area difference, the liquid flowing into the connecting rod 23 and the liquid passing pipe 24 Drive the liquid passing pipe 24 to move, the liquid passing pipe 24 drives the piston 61 to move, so that the piston 61 moves to one end of the sampling cylinder 41, and opens the second valve 55 in the discharge module 5, so that the liquid in the sampling cylinder 41 is removed from the discharge module 5. Outflow from the drain pipe 56, cleaning the sampling cylinder 41, to achieve high-pressure airtight sampling of the sampling liquid;

Finally, when the liquid in the sampling cylinder 41 meets the suspended solids content test requirements, close the third valve 13 of the production pipeline end 1, and close the second valve 55 in the discharge module 5. At this time, the sampling cylinder 41 is in a low pressure state, and the The sand core 35 covered with φ0.45μm microporous membrane is supported on the sand core base 36, the push rod 65 and the handle 67 are installed, the first valve 37 is opened, the handle 67 is rotated, and the push rod 65 is driven to rotate, so that the push rod 65 The piston 61 is driven to push the liquid in the sampling cylinder 41 to move to the other end of the sampling cylinder 41 , and the liquid in the sampling cylinder 41 can be discharged through the microporous membrane to realize the filtration of suspended solids.

The above description is only for the convenience of those skilled in the art to understand the technical solutions of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. A suspended solid content testing device is characterized by comprising a connecting module, a sampling module, a filtering module, a pushing module and a discharging module, wherein,

the connecting module is connected with the sampling module, the discharging module is arranged on one side of the first end of the sampling module, the filtering module is arranged on the other side of the first end of the sampling module, and the discharging module is opposite to the filtering module;

the connecting module comprises a connecting rod and a liquid passing pipe, the connecting rod and the liquid passing pipe are hollow, the liquid passing pipe is arranged in the connecting rod, and the liquid passing pipe is connected with the pushing module;

the filtering module comprises a first valve and a sand core filter, one end of the first valve is connected with the sampling module, and the other end of the first valve is connected with the sand core filter;

the pushing module comprises a piston and a pushing rod, one end of the piston is connected with the liquid passing pipe, and the other end of the piston is connected with the pushing rod;

the discharging module comprises a first connector, a second valve and a liquid discharge pipe, one end of the first connector is connected with the sampling module, the other end of the first connector is connected with one end of the second valve, and the other end of the second valve is connected with the liquid discharge pipe.

2. The apparatus of claim 1, wherein the sand core filter comprises a sand core, a sand core base, and a gland, the sand core being disposed within the sand core base, the gland being connected to the sand core base.

3. The device of claim 1, wherein the discharging module further comprises a rotating base and a rotating pressing cap, the rotating base is hollow inside, one end of the rotating base is connected with the sampling module, and the other end of the rotating base is suitable for being matched with the rotating pressing cap.

4. The device of claim 1, wherein the liquid passing tube is provided with a plurality of through holes at the tube wall of the end connected with the piston.

5. The apparatus of claim 1, further comprising a load cell module disposed on the connecting rod.

6. The apparatus of claim 5, wherein the pressure measurement module comprises a pressure gauge, a fourth joint, and a pressure gauge seat, the pressure gauge seat is connected to the connecting rod, and the fourth joint is disposed between the pressure gauge and the pressure gauge seat.

7. A test method using the apparatus for testing a content of suspended solids according to claim 1, the method comprising:

connecting the connecting module with a joint of a production pipeline end, opening a third valve of the production pipeline end to enable water in the production pipeline to flow into the connecting module, driving the liquid passing pipe to move by liquid flowing into the connecting module under the action of hydraulic pressure, driving the pushing module to move by the liquid passing pipe, and enabling the pushing module to move to one end of the sampling module;

opening a second valve in the drain module such that water in the sampling module drains from the drain module;

closing the third valve at the end of the production pipeline, closing the second valve in the discharge module, starting the filtration module, and pushing the pushing module so that the pushing module moves towards the other end of the sampling module.

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