CN211652370U - Experimental device and system for evaluating compressive strength of particle profile control agent - Google Patents
Experimental device and system for evaluating compressive strength of particle profile control agent Download PDFInfo
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- CN211652370U CN211652370U CN201921989367.5U CN201921989367U CN211652370U CN 211652370 U CN211652370 U CN 211652370U CN 201921989367 U CN201921989367 U CN 201921989367U CN 211652370 U CN211652370 U CN 211652370U
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 113
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
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Abstract
The utility model provides an experimental device and a system for evaluating the compressive strength of a granular profile control agent, wherein the experimental device comprises a constant flow pump, an intermediate container and a liquid storage tank; a liquid inlet of the constant-flow pump is connected with the liquid storage tank through a pipeline so as to pump the hydraulic oil into the intermediate container through the constant-flow pump; the middle container is a hollow cylinder with openings at the upper end and the lower end, and the upper end and the lower end of the middle container are respectively provided with an upper screw thread cover and a lower screw thread cover so as to seal the middle container; a cylindrical support frame is arranged at the bottom end inside the intermediate container and is tightly attached to the inner wall of the intermediate container; a disc is arranged on the cylindrical support frame, the diameter of the disc is matched with the inner diameter of the intermediate container, and a plurality of round holes are uniformly distributed on the disc; the upper screw thread cover and the lower screw thread cover are respectively provided with a liquid inlet and a liquid outlet; the liquid outlet of the constant flow pump is connected with the liquid inlet through a pipeline by an inlet valve.
Description
Technical Field
The utility model relates to an experimental apparatus and system for evaluating granule type profile control agent compressive strength belongs to oil development technical field.
Background
In recent years, with the intensive development and research of a profile control and channeling sealing technology, deep profile control agents represented by bulked particles, flexible gel particles and slow-crosslinking or pre-crosslinking polymer microspheres and channeling sealing agents represented by bark powder, rice chaff, rubber powder and flexible particles are gradually formed, but the maximum compressive strength of the granular profile control agents in the stratum is difficult to evaluate in a laboratory in a simulation mode.
In order to evaluate the injectability and the crushing capacity of the particle profile control agent, a compressive strength index is established. The compressive strength is an index for measuring the shearing resistance and the crushing resistance of the granular profile control agent. The particles with high compressive strength have higher elasticity in the stratum, can keep larger particle size and are beneficial to blocking large pore passages.
The compressive strength obtained by the traditional orifice plate method for evaluating the compressive strength is the pressure value required by allowing the particle profile control agent after 24 hours of expansion to pass through an orifice plate with the diameter of 0.3mm, and is used for describing the shearing, crushing, migration and elastic deformation capacity of the particle profile control agent in a stratum, and the compressive strength of the particle profile control agent is usually measured by adopting a bulk-expanded particle parameter measuring instrument. The compression strengths of different granular profile control agents are obviously different, which shows that the compression strengths can reflect intermolecular acting force and cementation strength in the granular profile control agents, and the parameter can be used as an important index for evaluating the granular profile control agents. The compressive strength is high, which indicates that the granules have high hardness and are not easy to break, and the capability of transporting to the deep part of the stratum is weaker; the compressive strength is small, which indicates that the particles are easy to break and have stronger capability of moving to the deep part of the stratum. However, the instruments required by the method are expensive and not equipped in a common laboratory, and when the compressive strength of the particle profile control agent is evaluated by the orifice plate method, the compressive strength is judged by pressing the particle profile control agent from the orifice plate only, so that the method is not accurate enough and has too large subjectivity.
Therefore, it has become an urgent technical problem in the art to provide a novel experimental device and system for evaluating the compressive strength of a granular profile control agent.
SUMMERY OF THE UTILITY MODEL
In order to solve the above disadvantages and shortcomings, an object of the present invention is to provide an experimental apparatus for evaluating the compressive strength of a granular profile control agent.
Another object of the utility model is to provide an experimental system for evaluating granule type profile control agent compressive strength. The utility model provides a this experimental apparatus and system simple structure, convenient operation, test are accurate, can simulate the compressive strength of granule type profile control agent well.
In order to reach the above-mentioned purpose, on the one hand, the utility model provides an experimental apparatus for evaluating granule class profile control agent compressive strength, wherein, an experimental apparatus for evaluating granule class profile control agent compressive strength includes: a constant flow pump, an intermediate container and a liquid storage tank;
a liquid inlet of the constant-flow pump is connected with the liquid storage tank through a pipeline so as to pump hydraulic oil into the intermediate container through the constant-flow pump;
the middle container is a hollow cylinder with openings at the upper end and the lower end, and the upper end and the lower end of the middle container are respectively provided with an upper screw thread cover and a lower screw thread cover so as to seal the middle container;
a cylindrical support frame is arranged at the bottom end inside the intermediate container and is tightly attached to the inner wall of the intermediate container; a disc is placed on the cylindrical support frame, the diameter of the disc is matched with the inner diameter of the intermediate container, and a plurality of round holes are uniformly distributed on the disc;
the upper screw thread cover and the lower screw thread cover are respectively provided with a liquid inlet and a liquid outlet; and the liquid outlet of the constant-flow pump is connected with the liquid inlet through an inlet valve through a pipeline.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, preferably, the liquid outlet is connected with an outlet pipeline, and an outlet valve is arranged on the outlet pipeline.
Preferably, the experimental device for evaluating the compressive strength of the granular profile control agent further comprises a pressure gauge, and the pressure gauge is installed on an outlet valve of the intermediate container.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, preferably, the outlet valve is a multi-way valve.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, preferably, the multi-way valve comprises a six-way valve or an eight-way valve.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, the diameter of the circular hole is preferably the same as the diameter of the blast hole of the oil-water well.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent described above, preferably, the diameter of the circular hole is 0.3 mm.
In the experimental apparatus for evaluating the compressive strength of a granular profile control agent described above, preferably, the intermediate container (5) is resistant to a pressure of up to 30 MPa.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, the intermediate container is preferably a transparent organic glass intermediate container.
Wherein the transparent organic glass material is conventional material, which can be obtained commercially.
In the experimental apparatus for evaluating the compressive strength of a granular profile control agent, preferably, the upper screw cap and the lower screw cap are respectively screwed with the upper end and the lower end of the intermediate container.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, preferably, the upper screw cap and the lower screw cap are respectively in threaded connection with the upper end and the lower end of the intermediate container through rubber sealing rings.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, the material of the disk may be selected from hard materials which are not easy to corrode, and preferably, the disk comprises a stainless steel disk or a PVC disk.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, the cylindrical support frame needs to be tightly attached to the inner wall of the intermediate container; the diameter of the disc placed on the cylindrical support frame needs to be matched with the inner diameter of the intermediate container, so that the situation that the particle profile control agent falls into the annular space to block the cylindrical support frame can be prevented, and the situation that the cylindrical support frame cannot be cleaned due to the fact that the particle profile control agent cannot be taken out can be avoided.
In the experimental device for evaluating the compressive strength of the granular profile control agent, the constant-flow pump, the six-way valve, the pressure gauge and the like are conventional devices.
In the experimental apparatus for evaluating the compressive strength of the granular profile control agent, the liquid storage tank is a storage tank for containing a pressurizing liquid; the utility model does not have specific requirements on the pressurizing liquid, and the technicians in the field can reasonably select the specific substance of the pressurizing liquid according to the needs of the field operation, as long as the aim of the utility model can be realized; as in a particular embodiment of the present invention, the pressurizing liquid may be selected from hydraulic oil.
The utility model also provides a method for utilize above experimental apparatus to evaluate the compressive strength of granule type profile control agent, it includes following specific step:
placing a cylindrical support frame in the intermediate container, and then placing a disc on the cylindrical support frame, wherein the diameter of the disc is matched with the inner diameter of the intermediate container, round holes (phi 0.3mm) are uniformly distributed on the disc, and the diameter of the round holes is the same as that of blast holes of the oil-water well;
filling a particle profile control agent above the disc, wherein the particle profile control agent needs to be soaked in advance to be fully expanded;
the experimental device for evaluating the compressive strength of the granular profile control agent is connected well, the pressure is pumped by a constant-flow pump, the pressure rising condition is observed, the instantaneous pressure is recorded, the granular profile control agent reaches the maximum bearing pressure along with the rising of the pressure, the pressurization is continued, the granular profile control agent can be broken and cannot bear the pressure, the pressure displayed on a pressure gauge can be suddenly reduced, and the maximum pressure is the maximum compressive strength of the granular profile control agent.
On the other hand, the utility model also provides an experimental system for evaluating granule type profile control agent compressive strength, wherein, an experimental system for evaluating granule type profile control agent compressive strength includes: the device comprises a plurality of experimental devices and multi-way valves, wherein the experimental devices are used for evaluating the compressive strength of the granular profile control agent; and liquid outlets of a middle container in the experimental device for evaluating the compressive strength of the granular profile control agent are respectively connected with the multi-way valve through pipelines.
Preferably, the experimental system for evaluating the compressive strength of the granular profile control agent further comprises a pressure gauge, and the pressure gauge is installed on the multi-way valve.
In the above-mentioned experimental system for evaluating the compressive strength of the granular profile control agent, preferably, the multi-way valve comprises a six-way valve or an eight-way valve.
In the actual operation process on site, different particle profile control agents are injected into the sectional plugs, at the moment, the compression strength of the different particle profile control agents needs to be evaluated, but the evaluation for many times is time-consuming and labor-consuming; and adopt the utility model provides an this an experimental system for evaluating granule type profile control agent compressive strength alright once only carry out the compressive strength evaluation simultaneously to multiple different granule type profile control agents in order to realize, labour saving and time saving, it is efficient.
Wherein, the technicians in the field can select the types of all multi-way valves and the number of experimental devices for evaluating the compressive strength of the granular profile control agent according to the actual operation requirements on site, such as the types of different granular profile control agents to be evaluated; as in a specific embodiment of the present invention, to evaluate the compressive strength of five different particle profile control agents, five experimental apparatuses for evaluating the compressive strength of the particle profile control agents are required, a six-way valve can be selected as the multi-way valve, and the liquid outlet of the intermediate container of any experimental apparatus for evaluating the compressive strength of the particle profile control agent is connected to the six-way valve through a pipeline; in addition, a pressure gauge can be connected to the six-way valve.
The experimental device for evaluating the compressive strength (the migration capacity of the granular plugging agent) of the granular profile control agent provided by the utility model has the advantages of simple structure, convenient operation, accurate detection and wide application range; the method not only can intuitively reflect the extrusion crushing condition, but also can clearly judge the maximum compressive strength of the particle profile control agent through the sudden pressure drop of the advection pump and the change of a pressure gauge pointer connected to the six-way valve, and the purpose of evaluating the compressive strength of the particle profile control agent at low cost is realized.
Drawings
Fig. 1 is a schematic structural diagram of an experimental apparatus for evaluating compressive strength of a granular profile control agent provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an experimental apparatus for evaluating compressive strength of a granular profile control agent provided in embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a stainless steel disc used in the experimental apparatus provided in embodiments 1-2 of the present invention.
The main reference numbers illustrate:
1-advection pump;
2-a liquid storage tank;
3-an inlet valve;
41-screwing a cover;
42-lower thread buckle cover;
5-an intermediate container;
6-disc;
7-a cylindrical support frame;
8-a six-way valve;
9-a pressure gauge;
10-round hole.
Detailed Description
The following detailed description of the embodiments and the advantageous effects thereof will be provided by way of specific examples and accompanying drawings, which are provided to assist the reader in better understanding the nature and features of the present invention, and are not intended to limit the scope of the present invention.
Example 1
The present embodiment provides an experimental apparatus for evaluating compressive strength of a granular profile control agent, a schematic structural diagram of which is shown in fig. 1, and as can be seen from fig. 1, the experimental apparatus includes: the device comprises a constant-flow pump 1, an intermediate container 5, a six-way valve 8, a pressure gauge 9 and a liquid storage tank 2;
a liquid inlet of the constant-flow pump 1 is connected with the liquid storage tank 2 through a pipeline so as to pump hydraulic oil into the intermediate container 5 through the constant-flow pump 1;
the middle container 5 is a hollow cylinder with openings at the upper end and the lower end, and the upper end and the lower end of the middle container are respectively provided with an upper screw thread cover 41 and a lower screw thread cover 42 so as to seal the middle container 5;
a cylindrical support frame 7 is arranged at the bottom end inside the intermediate container 5, and the cylindrical support frame 7 is tightly attached to the inner wall of the intermediate container 5; a disc (stainless steel disc) 6 (the structural schematic diagram is shown in fig. 3) is placed on the cylindrical support frame 7, the diameter of the disc (stainless steel disc) 6 is matched with the inner diameter of the intermediate container 5, and a plurality of round holes 10 are uniformly distributed on the disc (stainless steel disc) 6;
the upper screw cap 41 and the lower screw cap 42 are respectively provided with a liquid inlet and a liquid outlet; the liquid outlet of the constant-flow pump 1 is connected with the liquid inlet through an inlet valve 3 through a pipeline; the liquid outlet is connected with the six-way valve 8 through a pipeline, and the pressure gauge 9 is installed on the six-way valve 8.
In this embodiment, the diameter of the circular hole 10 is equal to the diameter of the blast hole of the oil-water well, and is 0.3 mm.
In this embodiment, the intermediate container 5 is a transparent organic glass intermediate container, and the pressure resistance is up to 30 MPa.
In this embodiment, the upper screw cap 41 and the lower screw cap 42 are respectively connected to the upper end and the lower end of the middle container 5 by threads through rubber sealing rings.
Example 2
The present embodiment provides an experimental apparatus for evaluating compressive strength of a granular profile control agent, a schematic structural diagram of which is shown in fig. 2, and as can be seen from fig. 2, the experimental apparatus includes: a constant flow pump 1, an intermediate container 5 and a liquid storage tank 2;
a liquid inlet of the constant-flow pump 1 is connected with the liquid storage tank 2 through a pipeline so as to pump hydraulic oil into the intermediate container 5 through the constant-flow pump 1;
the middle container 5 is a hollow cylinder with openings at the upper end and the lower end, and the upper end and the lower end of the middle container are respectively provided with an upper screw thread cover 41 and a lower screw thread cover 42 so as to seal the middle container 5;
a cylindrical support frame 7 is arranged at the bottom end inside the intermediate container 5, and the cylindrical support frame 7 is tightly attached to the inner wall of the intermediate container 5; a disc (stainless steel disc) 6 (the structural schematic diagram is shown in fig. 3) is placed on the cylindrical support frame 7, the diameter of the disc (stainless steel disc) 6 is matched with the inner diameter of the intermediate container 5, and a plurality of round holes 10 are uniformly distributed on the disc (stainless steel disc) 6;
the upper screw cap 41 and the lower screw cap 42 are respectively provided with a liquid inlet and a liquid outlet; the liquid outlet of the constant flow pump 1 is connected to the liquid inlet via an inlet valve 3 by a pipeline.
In this embodiment, the diameter of the circular hole 10 is equal to the diameter of the blast hole of the oil-water well, and is 0.3 mm.
In this embodiment, the intermediate container 5 is a transparent organic glass intermediate container, and the pressure resistance is up to 30 MPa.
In this embodiment, the upper screw cap 41 and the lower screw cap 42 are respectively connected to the upper end and the lower end of the middle container 5 by threads through rubber sealing rings.
Example 3
The embodiment provides an experimental system for evaluating the compressive strength of a granular profile control agent, wherein the experimental system for evaluating the compressive strength of a granular profile control agent comprises six experimental devices and a six-way valve, the experimental devices are used for evaluating the compressive strength of a granular profile control agent, the experimental devices are provided in the above embodiment 2, and the liquid outlets of intermediate containers in the experimental devices are respectively connected with the six-way valve through pipelines.
Example 4
The embodiment provides an experimental system for evaluating the compressive strength of a granular profile control agent, wherein the experimental system for evaluating the compressive strength of the granular profile control agent comprises five experimental devices for evaluating the compressive strength of the granular profile control agent, a pressure gauge and a six-way valve, which are provided in the above embodiment 2, and liquid outlets of an intermediate container in the five experimental devices for evaluating the compressive strength of the granular profile control agent are respectively connected with the six-way valve through pipelines; the pressure gauge is installed on the six-way valve.
Example 5
The present example provides a method for evaluating the compressive strength of a granular profile control agent, which uses the experimental apparatus for evaluating the compressive strength of a granular profile control agent provided in example 1, and comprises the following specific steps:
placing a cylindrical support frame in the intermediate container, and then placing a stainless steel disc on the cylindrical support frame, wherein the diameter of the stainless steel disc is matched with the inner diameter of the intermediate container, and round holes are uniformly distributed on the stainless steel disc, and the diameter of each round hole is the same as that of the blast hole of the oil-water well;
filling a granular profile control agent above the stainless steel disc, wherein the granular profile control agent needs to be soaked in advance to be fully expanded;
the experimental device for evaluating the compressive strength of the granular profile control agent is connected well, the pressure is pumped by a constant-flow pump, the pressure rising condition is observed, the instantaneous pressure is recorded, the granular profile control agent reaches the maximum bearing pressure along with the rising of the pressure, the pressurization is continued, the granular profile control agent can be broken and cannot bear the pressure, the pressure displayed on a pressure gauge can be suddenly reduced, and the maximum pressure is the maximum compressive strength of the granular profile control agent.
Specifically, in this embodiment, after two kinds of particle profile control agents with different particle size ranges are placed into tap water and formation simulation water to be expanded for 24 hours, the particle profile control agents are subjected to a compressive strength test experiment respectively, and the obtained experiment results are shown in table 1 below.
TABLE 1
As can be seen from table 1, the maximum compressive strength of the granular profile control agent a was 4.7MPa after 24 hours of expansion in tap water, the maximum compressive strength of the granular profile control agent a was 5.8MPa after 24 hours of expansion in formation water, the maximum compressive strength of the granular profile control agent B was 6.3MPa after 24 hours of expansion in tap water, and the maximum compressive strength of the granular profile control agent B was 7.8MPa after 24 hours of expansion in formation water.
The experimental device for evaluating the compressive strength (the migration capacity of the granular plugging agent) of the granular profile control agent provided by the utility model has the advantages of simple structure, convenient operation, accurate detection and wide application range; the method not only can intuitively reflect the extrusion crushing condition, but also can clearly judge the maximum compressive strength of the particle profile control agent through the sudden pressure drop of the advection pump and the change of a pressure gauge pointer connected to the six-way valve, and the purpose of evaluating the compressive strength of the particle profile control agent at low cost is realized.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (17)
1. An experimental apparatus for evaluating compressive strength of granular profile control agent, characterized in that the experimental apparatus for evaluating compressive strength of granular profile control agent comprises: a constant flow pump (1), an intermediate container (5) and a liquid storage tank (2);
a liquid inlet of the constant-flow pump (1) is connected with the liquid storage tank (2) through a pipeline so as to pump hydraulic oil into the intermediate container (5) through the constant-flow pump (1);
the middle container (5) is a hollow cylinder with openings at the upper end and the lower end, and the upper end and the lower end of the middle container are respectively provided with an upper screw thread cover and a lower screw thread cover so as to seal the middle container (5);
a cylindrical support frame (7) is arranged at the bottom end inside the intermediate container (5), and the cylindrical support frame (7) is tightly attached to the inner wall of the intermediate container (5); a disc (6) is placed on the cylindrical support frame (7), the diameter of the disc (6) is matched with the inner diameter of the intermediate container (5), and a plurality of round holes (10) are uniformly distributed on the disc (6);
the upper screw thread cover and the lower screw thread cover are respectively provided with a liquid inlet and a liquid outlet; the liquid outlet of the constant-flow pump (1) is connected with the liquid inlet through an inlet valve (3) by a pipeline.
2. The experimental device for evaluating the compressive strength of a granular profile control agent as claimed in claim 1, wherein the liquid outlet is connected with an outlet pipeline, and an outlet valve is arranged on the outlet pipeline.
3. The experimental device for evaluating the compressive strength of granular profile control agent according to claim 2, characterized in that, the experimental device further comprises a pressure gauge (9) which is installed on the outlet valve of the intermediate container (5).
4. The experimental device for evaluating the compressive strength of the granular profile control agent according to claim 2 or 3, wherein the outlet valve is a multi-way valve.
5. The experimental device for evaluating the compressive strength of a granular profile control agent as claimed in claim 4, wherein the multi-way valve comprises a six-way valve or an eight-way valve.
6. The experimental device for evaluating the compressive strength of granular profile control agent according to claim 1, wherein the diameter of the circular hole (10) is the same as the diameter of the blast hole of the oil-water well.
7. The experimental setup for evaluating the compressive strength of granular profile control agent according to claim 1, characterized in that the diameter of the circular hole (10) is 0.3 mm.
8. The experimental device for evaluating the compressive strength of granular profile control agent according to claim 6, characterized in that the diameter of the circular hole (10) is 0.3 mm.
9. The experimental setup for evaluating the compressive strength of a granular profile control agent according to claim 1, characterized in that the intermediate container (5) is resistant to pressure up to 30 MPa.
10. The experimental device for evaluating the compressive strength of a granular profile control agent according to claim 1 or 9, characterized in that the intermediate container (5) is a transparent organic glass intermediate container.
11. The experimental device for evaluating the compressive strength of granular profile control agents according to claim 1, wherein the upper screw cap and the lower screw cap are respectively in threaded connection with the upper end and the lower end of the intermediate container (5).
12. The experimental device for evaluating the compressive strength of granular profile control agent according to claim 10, wherein the upper screw cap and the lower screw cap are respectively in threaded connection with the upper end and the lower end of the intermediate container (5).
13. The experimental device for evaluating the compressive strength of a granular profile control agent according to any one of claims 1 and 11 to 12, wherein the upper screw cap and the lower screw cap are respectively in threaded connection with the upper end and the lower end of the intermediate container (5) through rubber sealing rings.
14. The experimental setup for evaluating the compressive strength of granular profile control agent according to claim 1, characterized in that the disc (6) comprises a stainless steel disc or a PVC disc.
15. An experimental system for evaluating the compressive strength of a granular profile control agent, comprising: a plurality of experimental devices and multi-way valves for evaluating the compressive strength of the granular profile control agent as claimed in any one of claims 1 to 14; and liquid outlets of a plurality of intermediate containers (5) in the experimental device for evaluating the compressive strength of the granular profile control agent are respectively connected with the multi-way valve through pipelines.
16. The experimental system for evaluating the compressive strength of a granular profile control agent as claimed in claim 15, further comprising a pressure gauge, wherein the pressure gauge is installed on the multi-way valve.
17. The experimental system for evaluating the compressive strength of a granular profile control agent as claimed in claim 15 or 16, wherein the multi-way valve comprises a six-way valve or an eight-way valve.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284982A (en) * | 2020-11-23 | 2021-01-29 | 西南石油大学 | Device for evaluating spreading and plugging performance of water plugging agent on gas-water interface of porous medium |
| CN115680620A (en) * | 2022-09-08 | 2023-02-03 | 中国石油大学(华东) | Device for testing plugging capability of jelly plugging agent and method for evaluating plugging capability |
-
2019
- 2019-11-18 CN CN201921989367.5U patent/CN211652370U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284982A (en) * | 2020-11-23 | 2021-01-29 | 西南石油大学 | Device for evaluating spreading and plugging performance of water plugging agent on gas-water interface of porous medium |
| CN112284982B (en) * | 2020-11-23 | 2024-05-14 | 西南石油大学 | Evaluation device for spreading and plugging performance of plugging agent on porous medium air-water interface |
| CN115680620A (en) * | 2022-09-08 | 2023-02-03 | 中国石油大学(华东) | Device for testing plugging capability of jelly plugging agent and method for evaluating plugging capability |
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