CN212674337U - Testing device - Google Patents
Testing device Download PDFInfo
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- CN212674337U CN212674337U CN202020951634.6U CN202020951634U CN212674337U CN 212674337 U CN212674337 U CN 212674337U CN 202020951634 U CN202020951634 U CN 202020951634U CN 212674337 U CN212674337 U CN 212674337U
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- temporary plugging
- plugging agent
- crack
- pressure
- simulation
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Abstract
The utility model provides a test device for the pressure of test temporary plugging agent in the crack, wherein, test device includes: the liquid tank is used for storing the temporary plugging agent; the simulation assembly comprises an accommodating cavity, the accommodating cavity is provided with a liquid inlet and a liquid outlet, and the accommodating cavity is communicated with the liquid tank through the liquid inlet; the simulation subassembly still includes crack simulation piece, and crack simulation piece is installed in holding the cavity, is provided with the crack on the crack simulation piece to make the temporary plugging agent flow through the crack after by the liquid outlet that holds the cavity flow, and when the temporary plugging agent outflow of liquid outlet is zero, measure the pressure that temporary plugging agent bore in the crack, with the inaccurate problem of the shutoff pressure test of the temporary plugging agent among the solution prior art.
Description
Technical Field
The utility model relates to a stifled agent pressure test field temporarily particularly, relates to a test device.
Background
At present, over 60 percent of newly added oil reserves in China are low-permeability difficultly-used reserves, unconventional exploitation of compact oil, compact gas, shale gas and the like is increasingly becoming a main working object of various oil field companies, and hydraulic fracturing is a main technical means for exploiting the unconventional oil and gas reservoirs. In the fracturing process, all the oil and gas reserves which are not affected by the fracturing fracture are difficult to be used, so that the primary goal of the transformation of the oil and gas reservoir is to form a complex fracture network.
In order to form a complex fracture network, more and more oil and gas wells use a diverting and diverting fracturing technique during the fracturing modification process. The temporary blocking and diverting fracturing technology is characterized by that in the course of fracturing construction, a high-strength temporary blocking agent is fed once or several times, and the temporary blocking agent can be fed into the crack in the stratum, and can produce filter cake bridge blocking in the crack, so that the differential pressure value higher than fracture cracking pressure can be formed, and the subsequent working liquor can not be fed into the crack zone, so that the liquid can be fed into high-stress zone or new crack to promote the production of new crack.
Therefore, in the process of temporary plugging and turning fracturing, the performance of the temporary plugging agent plays a key role, namely the temporary plugging agent can successfully plug old cracks in a stratum, so that subsequent working fluid cannot enter the cracks and a high-permeability zone, and the high pressure can be guaranteed to be set during construction, so that the turning of the cracks is realized.
In practical situations, the plugging pressure of the temporary plugging agent in the fracture needs to be tested, and particularly, the temporary plugging pressure simulation aiming at some complex fracture forms is required.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a testing apparatus for solving the problem of inaccurate pressure test of temporary plugging agents in the prior art.
In order to achieve the above object, the utility model provides a test device for the pressure of test temporary plugging agent in the crack, test device includes: the liquid tank is used for storing the temporary plugging agent; the simulation assembly comprises an accommodating cavity, the accommodating cavity is provided with a liquid inlet and a liquid outlet, and the accommodating cavity is communicated with the liquid tank through the liquid inlet; the simulation subassembly still includes crack simulation piece, and crack simulation piece is installed in holding the cavity, is provided with the crack on the crack simulation piece to make the temporary plugging agent flow through the crack after by the liquid outlet that holds the cavity flow, and when the temporary plugging agent outflow of liquid outlet is zero, measure the pressure that temporary plugging agent bore in the crack.
Further, the test device further comprises: the liquid tank is communicated with the accommodating chamber through a first pipeline; the pressure detection part is installed on the first pipeline to detect the pressure value of the temporary plugging agent when the outflow volume of the temporary plugging agent at the liquid outlet is zero.
Further, the test device further comprises: and a sealing member, at least a portion of which is installed in the accommodation chamber, and a crack simulation block installed between an outer wall of the sealing member and an inner wall of the accommodation chamber.
Further, the seal part is the rubber circle, and the rubber circle has the annular chamber, and the test device still includes: the first pump body is connected with the annular cavity of the rubber ring so as to pressurize the annular cavity, so that at least part of the rubber ring moves towards the inner wall of the accommodating cavity.
Further, the test device further comprises: the bearing part is provided with a bearing cavity, and a liquid outlet of the accommodating cavity is communicated with the bearing cavity so that the temporary plugging agent flows into the bearing cavity after flowing through the liquid outlet; and a weighing part on which the carrier is placed to measure a weight change of the carrier by the weighing part.
Further, the test device further comprises: the accommodating chamber is communicated with the bearing cavity through a second pipeline; and the pressure detection component is arranged on the second pipeline and used for detecting the pressure value of the temporary plugging agent when the outflow quantity of the temporary plugging agent at the liquid outlet is zero.
Further, the test device further comprises: and the back pressure valve is arranged on the second pipeline to control the pressure of the temporary plugging agent circulating in the second pipeline.
Further, the test device further comprises: the liquid tank is communicated with the accommodating chamber through a first pipeline; and the second pump body is arranged on the first pipeline so as to control the flow rate of the temporary plugging agent in the first pipeline through the second pump body.
Further, the test device further comprises: and at least part of the temperature control component is arranged in the accommodating cavity and is in contact with the crack simulation block so as to control the temperature of the crack simulation block.
Furthermore, the temperature control components are multiple, and the multiple temperature control components are arranged in the accommodating cavity at intervals.
By applying the technical scheme of the utility model, the testing device is used for testing the pressure of the temporary plugging agent in the crack, wherein, the testing device comprises a liquid tank and a simulation component, the liquid tank is used for storing the temporary plugging agent, the simulation component comprises a containing cavity, the containing cavity is provided with a liquid inlet and a liquid outlet, and the containing cavity is communicated with the liquid tank through the liquid inlet; the simulation subassembly still includes crack simulation piece, and crack simulation piece is installed in holding the cavity, is provided with the crack on the crack simulation piece to make the temporary plugging agent flow through the crack after by the liquid outlet that holds the cavity flow, and when the temporary plugging agent outflow of liquid outlet is zero, measure the pressure that temporary plugging agent bore in the crack. Set up like this and to utilize simulation subassembly simulation crack, make test environment press close to actual stratum environment, make the crack of temporary plugging agent flow through the simulation to measure the pressure of temporary plugging agent in the crack, the temporary plugging agent outflow when the liquid outlet is zero, explain that temporary plugging agent has carried out the shutoff with the crack, at this moment measures the pressure that temporary plugging agent bore in the crack, makes the test result more accurate.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a test rig according to the invention;
fig. 2 shows a schematic structural view of a simulation assembly of a test rig according to the invention;
fig. 3 shows a first structural schematic of a crack simulation block according to the present invention;
fig. 4 shows a second structural schematic of a crack simulation block according to the present invention;
fig. 5 shows a third structural schematic of a crack simulation block according to the present invention; and
fig. 6 shows a fourth schematic structural view of a crack simulation block according to the present invention.
Wherein the figures include the following reference numerals:
1. a liquid tank; 2. a simulation component; 20. a housing chamber; 21. a crack simulation block; 10. a first pipeline; 3. a pressure detecting member; 4. a sealing member; 5. a first pump body; 6. a carrier member; 7. a weighing component; 11. a second pipeline; 8. a back pressure valve; 9. a second pump body; 12. and a temperature control component.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a test device please refer to fig. 1 to fig. 6 for the pressure of test temporary plugging agent in the crack, test device includes: the liquid tank 1 is used for storing a temporary plugging agent; the simulation assembly 2 comprises a containing cavity 20, the containing cavity 20 is provided with a liquid inlet and a liquid outlet, and the containing cavity 20 is communicated with the liquid tank 1 through the liquid inlet; the simulation assembly 2 further comprises a crack simulation block 21, the crack simulation block 21 is installed in the accommodating chamber 20, and a crack is arranged on the crack simulation block 21, so that the temporary plugging agent flows out from a liquid outlet of the accommodating chamber 20 after flowing through the crack, and when the outflow of the temporary plugging agent at the liquid outlet is zero, the pressure borne by the temporary plugging agent in the crack is measured.
According to the utility model provides a test device for test temporary plugging agent is at the pressure in crack, wherein, test device includes fluid reservoir 1 and simulation subassembly 2, and fluid reservoir 1 is used for storing temporary plugging agent, and simulation subassembly 2 includes accommodation chamber 20, and accommodation chamber 20 has inlet and liquid outlet, and accommodation chamber 20 communicates with fluid reservoir 1 through the inlet; the simulation assembly 2 further comprises a crack simulation block 21, the crack simulation block 21 is installed in the accommodating chamber 20, and a crack is arranged on the crack simulation block 21, so that the temporary plugging agent flows out from a liquid outlet of the accommodating chamber 20 after flowing through the crack, and when the outflow of the temporary plugging agent at the liquid outlet is zero, the pressure borne by the temporary plugging agent in the crack is measured. Set up like this and to utilize simulation subassembly 2 simulation crack, make test environment press close to actual stratum environment, make the crack of temporary plugging agent flow through the simulation to measure the pressure of temporary plugging agent in the crack, the temporary plugging agent outflow when the liquid outlet is zero, explains that temporary plugging agent has carried out the shutoff with the crack, at this moment measures the pressure that temporary plugging agent bore in the crack, makes the test result more accurate.
In specific implementation, the testing apparatus further comprises: the first pipeline 10, the liquid tank 1 and the accommodating chamber 20 are communicated with each other through the first pipeline 10; the pressure detection part 3, the pressure detection part 3 is installed on the first pipeline 10 to when the temporary plugging agent outflow of liquid outlet is zero, detect the pressure value of temporary plugging agent. This arrangement can facilitate detection of the pressure value of the temporary plugging agent, and since the simulated crack is located in the accommodation chamber 20, which is inconvenient to detect, the pressure of the temporary plugging agent in the crack is fed back by the pressure of the temporary plugging agent in the first pipeline 10.
In order to make the test result more accurate, the testing apparatus further comprises: a sealing member 4, at least a portion of the sealing member 4 being installed in the accommodation chamber 20, and a crack simulation block 21 being installed between an outer wall of the sealing member 4 and an inner wall of the accommodation chamber 20. The formation environment can be simulated more accurately.
The test device further comprises: the bearing part 6 is provided with a bearing cavity, and a liquid outlet of the accommodating cavity 20 is communicated with the bearing cavity, so that the temporary plugging agent flows into the bearing cavity after flowing through the liquid outlet; a weighing part 7 on which the bearing part 6 is placed, to measure a weight change of the bearing part 6 by the weighing part 7. The temporary plugging agent outflow condition of the liquid outlet is convenient for an operator to observe, and the weight of the bearing part 6 can be measured by the weighing part 7. Preferably, the carrier member 6 is a beaker and the weighing member 7 is a balance.
In the embodiment provided by the utility model, the test device still includes: a second pipeline 11, through which the accommodation chamber 20 communicates with the bearing chamber; and the pressure detection part 3 is arranged on the second pipeline 11, so that the pressure value of the temporary plugging agent is detected when the outflow quantity of the temporary plugging agent at the liquid outlet is zero. This arrangement enables the temporary plugging agent bearing pressure to be fed back through the second line 11 so as to measure the temporary plugging pressure of the temporary plugging agent.
In the specific implementation process, the test device further comprises: and a back-pressure valve 8, the back-pressure valve 8 being installed on the second pipeline 11 to control the pressure of the temporary plugging agent circulating in the second pipeline 11. The pressure that sets up like this and can pass through outlet opening department of back pressure valve 8 control is formation fluid pressure, makes the test result more accurate.
In another embodiment provided by the present invention, the testing apparatus further comprises: the first pipeline 10, the liquid tank 1 and the accommodating chamber 20 are communicated with each other through the first pipeline 10; and the second pump body 9, the second pump body 9 is arranged on the first pipeline 10, so that the flow rate of the temporary plugging agent in the first pipeline 10 is controlled through the second pump body 9. Preferably, the second pump body 9 is a advection pump.
The test device further comprises: and a temperature control part 12, at least a part of the temperature control part 12 being installed in the receiving chamber 20 and contacting the crack simulation block 21 to control the temperature of the crack simulation block 21. In the test process, the temperature control part 12 is used for heating the crack simulation block to the formation temperature and then preserving the heat.
In an implementation, the temperature control unit 12 is plural, and the plural temperature control units 12 are disposed at intervals in the accommodating chamber 20.
As shown in fig. 3 to 6, the fracture simulation block can simulate various fracture forms, so that the simulation assembly is close to the formation environment, and the accuracy of the test result is improved.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
according to the utility model provides a test device for test temporary plugging agent is at the pressure in crack, wherein, test device includes fluid reservoir 1 and simulation subassembly 2, and fluid reservoir 1 is used for storing temporary plugging agent, and simulation subassembly 2 includes accommodation chamber 20, and accommodation chamber 20 has inlet and liquid outlet, and accommodation chamber 20 communicates with fluid reservoir 1 through the inlet; the simulation assembly 2 further comprises a crack simulation block 21, the crack simulation block 21 is installed in the accommodating chamber 20, and a crack is arranged on the crack simulation block 21, so that the temporary plugging agent flows out from a liquid outlet of the accommodating chamber 20 after flowing through the crack, and when the outflow of the temporary plugging agent at the liquid outlet is zero, the pressure borne by the temporary plugging agent in the crack is measured. Set up like this and to utilize simulation subassembly 2 simulation crack, make test environment press close to actual stratum environment, make the crack of temporary plugging agent flow through the simulation to measure the pressure of temporary plugging agent in the crack, the temporary plugging agent outflow when the liquid outlet is zero, explains that temporary plugging agent has carried out the shutoff with the crack, at this moment measures the pressure that temporary plugging agent bore in the crack, makes the test result more accurate.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A test device for testing the pressure of a temporary plugging agent in a fracture, the test device comprising:
the liquid tank (1) is used for storing the temporary plugging agent;
a simulation assembly (2), the simulation assembly (2) comprising a containing chamber (20), the containing chamber (20) having an inlet and an outlet, the containing chamber (20) being in communication with the tank (1) through the inlet;
simulation subassembly (2) still include crack simulation piece (21), crack simulation piece (21) are installed hold in cavity (20), be provided with the crack on crack simulation piece (21), so that temporary plugging agent flows through by behind the crack the liquid outlet that holds cavity (20) flows out, and is in when temporary plugging agent outflow of liquid outlet is zero, it is in to temporary plugging agent the pressure that bears in the crack is measured.
2. The testing device of claim 1, further comprising:
a first line (10) communicating between the tank (1) and the containment chamber (20) through said first line (10);
the pressure detection part (3), install pressure detection part (3) on first pipeline (10) to when the temporary plugging agent outflow of liquid outlet is zero, detect the pressure value of temporary plugging agent.
3. The testing device of claim 1, further comprising:
a sealing member (4), at least part of the sealing member (4) being mounted within the housing chamber (20), the crack simulation block (21) being mounted between an outer wall of the sealing member (4) and an inner wall of the housing chamber (20).
4. Testing device according to claim 3, characterized in that the sealing member (4) is a rubber ring having an annular cavity, the testing device further comprising:
a first pump body (5), said first pump body (5) being connected to the annular cavity of the rubber ring to pressurize said annular cavity to move at least part of the rubber ring towards the inner wall of the containment chamber (20).
5. The testing device of claim 1, further comprising:
the bearing part (6), the bearing part (6) has a bearing cavity, and a liquid outlet of the accommodating cavity (20) is communicated with the bearing cavity, so that the temporary plugging agent flows into the bearing cavity after flowing through the liquid outlet;
a weighing member (7), the carrier member (6) being placed on the weighing member (7) to measure a change in weight of the carrier member (6) by the weighing member (7).
6. The testing device of claim 5, further comprising:
a second conduit (11), through which the containment chamber (20) communicates with the load-bearing cavity (11);
and the pressure detection part (3) is installed on the second pipeline (11), so that when the outflow volume of the temporary plugging agent at the liquid outlet is zero, the pressure value of the temporary plugging agent is detected.
7. The testing device of claim 6, further comprising:
a back-pressure valve (8), the back-pressure valve (8) is installed on the second pipeline (11) to control the pressure of the temporary plugging agent circulating in the second pipeline (11).
8. The testing device of claim 1, further comprising:
a first line (10) communicating between the tank (1) and the containment chamber (20) through said first line (10);
the second pump body (9), the second pump body (9) is installed on first pipeline (10), in order to pass through second pump body (9) control the velocity of flow of temporary plugging agent in first pipeline (10).
9. The testing device of claim 1, further comprising:
a temperature control member (12), at least part of the temperature control member (12) being installed within the housing chamber (20) and being in contact with the crack simulation block (21) to control a temperature of the crack simulation block (21).
10. The testing device according to claim 9, characterized in that the temperature control member (12) is provided in plurality, and a plurality of the temperature control members (12) are arranged at intervals in the accommodating chamber (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951634.6U CN212674337U (en) | 2020-05-29 | 2020-05-29 | Testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951634.6U CN212674337U (en) | 2020-05-29 | 2020-05-29 | Testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212674337U true CN212674337U (en) | 2021-03-09 |
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ID=74812448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020951634.6U Active CN212674337U (en) | 2020-05-29 | 2020-05-29 | Testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212674337U (en) |
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2020
- 2020-05-29 CN CN202020951634.6U patent/CN212674337U/en active Active
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