CN209764863U - Rock core displacement experimental apparatus - Google Patents
Rock core displacement experimental apparatus Download PDFInfo
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- CN209764863U CN209764863U CN201920179389.9U CN201920179389U CN209764863U CN 209764863 U CN209764863 U CN 209764863U CN 201920179389 U CN201920179389 U CN 201920179389U CN 209764863 U CN209764863 U CN 209764863U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 149
- 239000011435 rock Substances 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000002474 experimental method Methods 0.000 claims abstract description 23
- 230000008676 import Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 39
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 239000007924 injection Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 13
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model provides a rock core displacement experimental apparatus, including fracturing fluid storage tank, the air feed jar, displacement jar and gas-liquid mixer, the inside displacement space that is formed with ability holding rock core of displacement jar, displacement jar upper end is equipped with the import pipe, displacement jar lower extreme is equipped with the outlet pipe, import pipe and outlet pipe all communicate with the displacement space, fracturing fluid storage tank connection is equipped with first supply pipe, gas-liquid mixer is equipped with the second supply pipe, the air feed jar is equipped with the third supply pipe, first supply pipe, the second supply pipe, the third supply pipe reaches to be connected through the cross-over valve, cross-over valve control import pipe and first import pipe, second supply pipe or third supply pipe intercommunication. The utility model discloses a set up the gas-liquid mixer and can adopt the gas-liquid mixture fluid to carry out the displacement experiment to the core, simulation core real environment guarantees that fracturing fluid more is close the true condition at the core flow, improves displacement test result's accuracy and reliability, provides the assurance to the injury and the fluid performance of reservoir bed for correct evaluation working fluid.
Description
Technical Field
The utility model relates to an oil field development experimental apparatus especially indicates a core displacement experimental apparatus.
Background
The core flow experiment is one of the most important basic analysis projects in an oil field development laboratory, is used for evaluating the damage of working fluid to a reservoir and the fluid performance, and the accuracy of the test result directly influences the development effect of an oil field. At present, gas injection displacement or liquid displacement is generally adopted in a core flow displacement experiment, namely a gas injection displacement mode or a liquid injection displacement mode is respectively adopted. Because most rock stratum environments are in a gas-liquid state, gas injection or liquid injection is adopted independently, which is far away from a real environment, and the displacement effect of the fracturing fluid cannot be accurately measured at all, so that the test result is inaccurate, and the damage of the working fluid to the reservoir stratum and the fluid performance evaluation are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rock core displacement experimental apparatus can carry out the experiment that the rock core flows through gas-liquid mixture fluid, and the true environment of simulation rock core guarantees that fracturing fluid more is close the true condition at the rock core flow, improves displacement test result's accuracy and reliability.
In order to achieve the above purpose, the utility model provides a rock core displacement experimental device, wherein the rock core displacement experimental device comprises a fracturing fluid storage tank, an air supply tank, a displacement tank and a gas-liquid mixer, a displacement space capable of containing the rock core is formed inside the displacement tank, an inlet pipe is arranged at the upper end of the displacement tank, the lower end of the displacement tank is provided with an outlet pipe, the inlet pipe and the outlet pipe are both communicated with the displacement space, the fracturing fluid storage tank is connected with a first supply pipe, the gas-liquid mixer is provided with a second supply pipe, the air supply tank is provided with a third supply pipe, the first supply pipe, the second supply pipe, the third supply pipe and the inlet pipe are connected through a four-way switching valve, the four-way switching valve controls the inlet pipe to communicate with the first supply pipe, the second supply pipe, or the third supply pipe.
The rock core displacement experiment device comprises the displacement tank, wherein the displacement tank comprises a tank body which is provided with an upper opening and a lower opening and is hollow inside, a core barrel which is provided with an upper opening and a lower opening and is hollow inside is arranged inside the tank body, the tank body and the core barrel are coaxially arranged, an upper end enclosure is arranged inside the upper end of the tank body, a lower end enclosure is arranged inside the lower end of the tank body, the upper end of the core barrel is in sealing butt joint with the upper end enclosure, the lower end of the core barrel is in sealing butt joint with the lower end enclosure, a closed annular space is formed among the upper end enclosure, the lower end enclosure, the outer surface of the core barrel and the inner surface of the tank body, oil is filled in the annular space, the displacement space is formed by the upper end enclosure, the lower end enclosure and the inner surface of the core barrel, the pressure in the annular space is higher than the pressure in the displacement space, and the rock core is arranged inside the displacement space and is, the inlet pipe penetrates through the upper end enclosure and is communicated with the displacement space, and the outlet pipe penetrates through the lower end enclosure and is communicated with the displacement space.
The core displacement experiment device as described above, wherein the core barrel is a rubber barrel.
The rock core displacement experimental device comprises a displacement tank, a displacement tank and an inlet pipe, wherein the displacement tank further comprises an upper sealing cover and a lower sealing cover, the upper sealing cover can be detachably mounted at the upper end of the tank body, the upper sealing head is retained in the tank body in a limiting manner, the inlet pipe penetrates through the upper sealing cover, the upper sealing head and the displacement space, the lower sealing cover can be detachably mounted at the lower end of the tank body, the lower sealing head is retained in the tank body in a limiting manner, and the outlet pipe penetrates through the lower sealing cover, the lower sealing head and the displacement space.
the apparatus for testing core displacement, wherein the first supply pipe, the second supply pipe and the third supply pipe are respectively provided with a valve.
The core displacement experimental device as described above, wherein the gas-liquid mixer is connected with a liquid inlet pipe and an air inlet pipe.
The core displacement experiment device as described above, wherein the liquid inlet pipe is communicated with the fracturing liquid storage tank.
The core displacement experiment apparatus as described above, wherein the air inlet pipe is communicated with the air supply tank.
the rock core displacement experimental device is characterized in that the liquid inlet pipe and the gas inlet pipe are respectively provided with an adjusting valve.
The core displacement experimental device as described above, wherein the core displacement experimental device further comprises a support, and the fracturing fluid storage tank, the gas-liquid mixer and the displacement tank are detachably mounted on the support.
Compared with the prior art, the utility model has the advantages as follows:
1. The utility model provides a rock core displacement experimental apparatus can adopt the gas-liquid mixture fluid to carry out the displacement experiment to the rock core through setting up the gas-liquid mixer, and the true environment of simulation rock core guarantees that fracturing fluid more is close the true condition at the rock core flow, improves displacement test result's accuracy and reliability, provides the assurance to the injury and the fluid performance of reservoir bed for correct evaluation working fluid.
2. The utility model provides a rock core displacement experimental apparatus can carry out the gas-liquid mixture displacement to the rock core injection gas-liquid mixture fluid, can also annotate liquid displacement or inject gas alone into and carry out the gas injection displacement to the rock core alone injection liquid, satisfies multiple experimental requirements.
3. the utility model provides a rock core displacement experimental apparatus simple structure, the design science, the preparation is easy, and convenient operation has extensive application prospect.
drawings
the drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
Fig. 1 is a schematic structural diagram of a core displacement experiment apparatus provided by the present invention;
Fig. 2 is a schematic view of a sectional structure of a displacement tank of the core displacement experimental apparatus provided by the present invention;
Fig. 3 is the utility model provides a core displacement experimental apparatus's fracturing fluid storage tank, displacement jar and gas-liquid mixer overlook the overall arrangement sketch map.
the reference numbers illustrate:
1. a fracturing fluid storage tank;
11. A first supply pipe;
2. A displacement tank;
21. An inlet pipe;
22. An outlet pipe;
23. A tank body;
231. An annular space;
24. A core barrel;
241. a displacement space;
25. An upper end enclosure;
26. a lower end enclosure;
27. An upper sealing cover;
28. A lower sealing cover;
3. a gas-liquid mixer;
31. A second supply pipe;
32. A liquid inlet pipe;
33. An air inlet pipe;
4. A four-way switching valve;
5. A support;
6. And (5) a core.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a core displacement experimental apparatus, wherein, the core displacement experimental apparatus includes fracturing fluid storage tank 1, air supply tank (not shown in the figure), displacement tank 2 and gas-liquid mixer 3, displacement space 241 capable of accommodating core 6 is formed inside displacement tank 2, inlet pipe 21 is arranged at the upper end of displacement tank 2, outlet pipe 22 is arranged at the lower end of displacement tank 2, inlet pipe 21 and outlet pipe 22 are both communicated with displacement space 241, fracturing fluid storage tank 1 is connected with first supply pipe 11, gas-liquid mixer 3 is provided with second supply pipe 31, air supply tank is provided with third supply pipe (not shown in the figure), first supply pipe 11, the second supply pipe 31, the third supply pipe, and the inlet pipe 21 are connected by the four-way switching valve 4, and the four-way switching valve 4 controls the inlet pipe 21 to communicate with the first supply pipe 11, the second supply pipe 31, or the third supply pipe. The gas-liquid mixed fluid can be introduced into the displacement tank 2 through the gas-liquid mixer 3 and the second supply pipe 31 to carry out displacement experiments on the core 6, so that the real environment of the core 6 is simulated, the flowing of the fracturing fluid in the core 6 is ensured to be closer to the real condition, the accuracy and reliability of displacement test results are improved, and the damage of the working fluid to a reservoir and the fluid performance are ensured to be correctly evaluated; meanwhile, through controlling the four-way switching valve 4, the fracturing fluid storage tank 1 can be flexibly selected to be introduced into the displacement tank 2 through the first supply pipe 11 to carry out liquid injection displacement experiment, or the gas supply tank is adopted to introduce gas into the displacement tank 2 through the third supply pipe to carry out gas injection displacement, so that various displacement modes can be effectively realized, and various experimental requirements are met.
further, as shown in fig. 1 and 2, the rock core displacement experimental apparatus provided by the present invention, wherein the displacement tank 2 includes a tank 23 having an upper opening and a lower opening and having a hollow interior, a core barrel 24 having an upper opening and a lower opening and having a hollow interior is disposed inside the tank 23, i.e. the tank 23 and the core barrel 24 are both in a tubular shape, the tank 23 and the core barrel 24 are coaxially disposed, an upper end cap 25 is disposed inside the upper end of the tank 23, a lower end cap 26 is disposed inside the lower end of the tank 23, and the upper end of the core barrel 24 is in sealing abutment with the upper end cap 25, the lower end cap 24 is in sealing abutment with the lower end cap 26, i.e. the upper end cap 25 is in sealing abutment with the upper end of the tank 23 and the upper end of the core barrel 24, the lower end cap 26 is in sealing abutment with the lower end of the tank 23 and the lower end of the core barrel 24, a closed annular space 231 is formed between the outer surface of the upper, the upper end enclosure 25 and the lower end enclosure 26 form a displacement space 241 with the inner surface of the core barrel 24, the pressure in the annular space 231 is greater than the pressure in the displacement space 241, the core 6 is arranged in the displacement space 241 and is in close contact with the inner surface of the core barrel 24, specifically, the pressure of the oil in the annular space 231 can be manually adjusted, so that the pressure in the annular space 231 is greater than the pressure in the displacement space 241, the core barrel 24 is prevented from expanding and deforming outwards in the radial direction under the pressure of the displacement fluid in the core barrel 24 in the process of the displacement experiment, and the core barrel 24 is pressed by the oil to be in close contact with the core 6 in the core barrel 24, so that the situation that the displacement fluid cannot pass through the gap due to the gap generated between the inner wall of the core barrel 24 and the core 6 is avoided, and the accuracy of the experiment is ensured; the inlet pipe 21 penetrates through the upper head 25 to be communicated with the displacement space 241, and the outlet pipe 22 penetrates through the lower head 26 to be communicated with the displacement space 241, so that the displacement fluid flows into the displacement space 241 and flows out of the displacement space 241.
As preferred, the utility model provides a rock core displacement experimental apparatus, wherein, core section of thick bamboo 24 is the rubber tube. So as to ensure the service life of the core barrel 24 and avoid the damage of the core barrel 24 caused by long-term compression.
further, as shown in fig. 1 and 2, the utility model provides a rock core displacement experimental apparatus, wherein, displacement jar 2 still includes upper cover 27 and lower closing cap 28, upper cover 27 can install in the upper end of jar body 23 with dismouting, upper cover 25 passes through upper cover 27 spacing to be kept in the inside of jar body 23, import pipe 21 runs through upper cover 27, upper cover 25 communicates with displacement space 241, lower closing cap 28 can install in the lower extreme of jar body 23 with dismouting, lower closing cap 26 passes through lower closing cap 28 and keeps in the inside of jar body 23, outlet pipe 22 runs through lower closing cap 28, lower closing cap 26 and displacement space 241 intercommunication. The upper sealing head 25 and the lower sealing head 26 can be effectively kept by arranging the upper sealing cover 27 and the lower sealing cover 28, and the sealing performance between the upper sealing head 25 and the upper end of the tank body 23 and the upper end of the core barrel 24 and the sealing performance between the lower sealing head 26 and the lower end of the tank body 23 and the lower end of the core barrel 24 are ensured, so that the displacement space 241 and the annular space 231 are mutually independent sealing cavities.
Further, as shown in fig. 1, the utility model provides a core displacement experimental apparatus, wherein, be equipped with the valve on first supply line 11, second supply line 31 and the third supply line respectively to control fracturing fluid storage tank 1, gas-liquid mixer 3 and air feed tank respectively and provide the displacement fluid to displacement tank 2, and adjust the flow of fluid.
further, as shown in fig. 1, the utility model provides a core displacement experimental apparatus, wherein, the gas-liquid mixer 3 is connected and is equipped with feed liquor pipe 32 and intake pipe 33 for let in liquid and gas in the gas-liquid mixer 3 respectively.
as preferred, the utility model provides a rock core displacement experimental apparatus, wherein, for further simplifying the utility model discloses a structure can be directly with feed liquor pipe 32 and 1 intercommunication of fracturing fluid storage tank, makes fracturing fluid storage tank 1 can supply liquid to displacement jar 2 and can also supply liquid for gas-liquid mixer 3.
As preferred, the utility model provides a rock core displacement experimental apparatus, wherein, for further simplifying the utility model discloses a structure can be directly with intake pipe 33 and air supply jar intercommunication, makes the air supply jar can also be the 3 air supplies of gas-liquid mixer to displacement jar 2 air supplies.
As preferred, the utility model provides a rock core displacement experimental apparatus, wherein, be equipped with the governing valve on feed liquor pipe 32 and the intake pipe 33 respectively to the control leads to the gas-liquid ratio of gas-liquid mixer 3.
as preferably, as shown in fig. 1 and 3, the utility model provides a core displacement experimental apparatus, wherein, core displacement experimental apparatus still includes support 5, and fracturing fluid storage tank 1, gas-liquid mixer 3 and displacement jar 2 homoenergetic are installed on support 5 with dismantling.
Compared with the prior art, the utility model has the advantages as follows:
1. The utility model provides a rock core displacement experimental apparatus can adopt the gas-liquid mixture fluid to carry out the displacement experiment to the rock core through setting up the gas-liquid mixer, and the true environment of simulation rock core guarantees that fracturing fluid more is close the true condition at the rock core flow, improves displacement test result's accuracy and reliability, provides the assurance to the injury and the fluid performance of reservoir bed for correct evaluation working fluid.
2. the utility model provides a rock core displacement experimental apparatus can carry out the gas-liquid mixture displacement to the rock core injection gas-liquid mixture fluid, can also annotate liquid displacement or inject gas alone into and carry out the gas injection displacement to the rock core alone injection liquid, satisfies multiple experimental requirements.
3. The utility model provides a rock core displacement experimental apparatus simple structure, the design science, the preparation is easy, and convenient operation has extensive application prospect.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (10)
1. The utility model provides a rock core displacement experimental apparatus, its characterized in that, rock core displacement experimental apparatus includes fracturing fluid storage tank, air feed jar, displacement jar and gas-liquid blender, the inside of displacement jar is formed with the displacement space that can the holding rock core, the upper end of displacement jar is equipped with the import pipe, the lower extreme of displacement jar is equipped with the outlet pipe, the import pipe with the outlet pipe all with displacement space intercommunication, fracturing fluid storage tank connection is equipped with first supply pipe, gas-liquid blender is equipped with the second supply pipe, the air feed jar is equipped with the third supply pipe, first supply pipe the second supply pipe the third supply pipe reaches the import pipe passes through the four-way switching valve and connects, four-way switching valve control the import pipe with first supply pipe the second supply pipe or the third supply pipe intercommunication.
2. The rock core displacement experiment device according to claim 1, wherein the displacement tank comprises a tank body which is open at the top and bottom and is hollow inside, a core barrel which is open at the top and bottom and is hollow inside is arranged inside the tank body, the tank body and the core barrel are coaxially arranged, an upper head is arranged inside the upper end of the tank body, a lower head is arranged inside the lower end of the tank body, the upper end of the core barrel is in sealing abutting joint with the upper head, the lower end of the core barrel is in sealing abutting joint with the lower head, a closed annular space is formed among the upper head, the lower head, the outer surface of the core barrel and the inner surface of the tank body, oil is filled in the annular space, the displacement space is formed among the upper head, the lower head and the inner surface of the core barrel, the pressure in the annular space is higher than the pressure in the displacement space, the rock core is arranged inside the displacement space and is in close fitting contact with the inner surface of the core barrel, the inlet pipe penetrates through the upper end enclosure and is communicated with the displacement space, and the outlet pipe penetrates through the lower end enclosure and is communicated with the displacement space.
3. The core displacement experimental apparatus of claim 2, wherein the core barrel is a rubber barrel.
4. the rock core displacement experiment device according to claim 2 or 3, wherein the displacement tank further comprises an upper sealing cover and a lower sealing cover, the upper sealing cover is detachably mounted at the upper end of the tank body, the upper sealing cover is limited and kept inside the tank body through the upper sealing cover, the inlet pipe penetrates through the upper sealing cover and is communicated with the displacement space, the lower sealing cover is detachably mounted at the lower end of the tank body, the lower sealing cover is kept inside the tank body through the lower sealing cover, and the outlet pipe penetrates through the lower sealing cover and is communicated with the displacement space.
5. A core displacement experiment apparatus according to claim 1, wherein the first supply pipe, the second supply pipe and the third supply pipe are respectively provided with a valve.
6. the core displacement experiment device of claim 1 or 5, wherein the gas-liquid mixer is provided with a liquid inlet pipe and a gas inlet pipe in a connected manner.
7. The core displacement experiment device of claim 6, wherein the liquid inlet pipe is in communication with the fracturing fluid storage tank.
8. The core displacement experiment device of claim 6, wherein the air inlet pipe is in communication with the air supply tank.
9. the rock core displacement experiment device of claim 6, wherein the liquid inlet pipe and the gas inlet pipe are respectively provided with an adjusting valve.
10. The core displacement experiment device of claim 1, further comprising a support on which the fracturing fluid storage tank, the gas-liquid mixer, and the displacement tank are removably mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179389.9U CN209764863U (en) | 2019-01-31 | 2019-01-31 | Rock core displacement experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179389.9U CN209764863U (en) | 2019-01-31 | 2019-01-31 | Rock core displacement experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209764863U true CN209764863U (en) | 2019-12-10 |
Family
ID=68751375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920179389.9U Active CN209764863U (en) | 2019-01-31 | 2019-01-31 | Rock core displacement experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209764863U (en) |
-
2019
- 2019-01-31 CN CN201920179389.9U patent/CN209764863U/en active Active
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