CN212844895U - Gas injection displacement oil extraction experimental device - Google Patents
Gas injection displacement oil extraction experimental device Download PDFInfo
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- CN212844895U CN212844895U CN202020867131.0U CN202020867131U CN212844895U CN 212844895 U CN212844895 U CN 212844895U CN 202020867131 U CN202020867131 U CN 202020867131U CN 212844895 U CN212844895 U CN 212844895U
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- gas injection
- core holder
- valve
- oil recovery
- pressure
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- 238000002347 injection Methods 0.000 title claims abstract description 84
- 239000007924 injection Substances 0.000 title claims abstract description 84
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 46
- 238000000605 extraction Methods 0.000 title description 3
- 238000011084 recovery Methods 0.000 claims abstract description 36
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 17
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 17
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 abstract description 36
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 83
- 239000003921 oil Substances 0.000 description 41
- 239000010779 crude oil Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004533 oil dispersion Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model provides a gas injection displacement oil recovery experimental apparatus, it is including the rock core holder who is used for holding oiliness rock core, with the gas injection pipeline of rock core holder's entry linkage, with the drainage tube of rock core holder's exit linkage, and be used for the constant temperature electric jacket to oiliness rock core heating, the gas injection pipeline is connected with non-hydrocarbon gas supply source, in the constant temperature electric jacket was located to the rock core holder, through the heating temperature who changes rock core holder's clamping pressure and/or constant temperature electric jacket, can simulate non-hydrocarbon gas displacement of reservoir oil effect under different temperature and/or different pressure conditions. The utility model discloses a gas injection displacement oil recovery experimental apparatus simple structure, convenient operation, labour saving and time saving.
Description
Technical Field
The utility model belongs to the technical field of the oil development technique and specifically relates to a gas injection displacement oil recovery experimental apparatus.
Background
At present, non-hydrocarbon gas flooding technologies such as nitrogen flooding, carbon dioxide flooding and air flooding are effective methods for improving recovery efficiency in the middle and later stages of non-homogeneous oil reservoir water flooding development, the problems of high residual oil dispersion, low conventional water flooding efficiency and the like can be effectively solved, and the oil reservoir development effect is improved.
The general method for evaluating the effect of improving the recovery efficiency by non-hydrocarbon gas flooding is to adopt a core experimental device to simulate a gas injection displacement process, but the existing core experimental device has the disadvantages of excessively complex structure, complex operation, time and labor waste and great difficulty in experiment development, so that the utilization rate of the experimental device is extremely low, and instruments and equipment which consume huge resources cannot play the greatest role.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas injection displacement oil recovery experimental apparatus to the structure of solving current experimental apparatus existence is complicated, complex operation, the problem that wastes time and energy.
In order to achieve the above object, the utility model provides a gas injection displacement oil recovery experimental apparatus, its including the rock core holder that is used for holding oiliness rock core, with rock core holder's entry linkage's gas injection pipeline, with rock core holder's exit linkage's flowing back pipeline and be used for right the constant temperature electric jacket of oiliness rock core heating, the gas injection pipeline is connected with non-hydrocarbon gas supply source, rock core holder locates in the constant temperature electric jacket.
The gas injection displacement oil recovery experimental device comprises a core holder, wherein the inlet of the core holder is provided with a first pressure sensor, the outlet of the core holder is provided with a second pressure sensor, and the outlet of the core holder is also connected with a pressure reducing valve.
The gas injection displacement oil recovery experimental device is characterized in that the pressure reducing valve is arranged on the liquid discharge pipeline.
The gas injection displacement oil recovery experimental device is characterized in that a temperature sensor is further arranged on the core holder.
The gas injection displacement oil recovery experimental device as described above, wherein the gas injection displacement oil recovery experimental device further includes a warm-pressure collecting system, and the first pressure sensor, the second pressure sensor and the temperature sensor are all electrically connected to the warm-pressure collecting system.
The gas injection displacement oil recovery experimental device is characterized in that a gas injection valve, a pressure gauge and a gas flowmeter are arranged on the gas injection pipeline.
The gas injection displacement oil recovery experimental device as described above, wherein the gas injection valve is a high pressure valve, and the high pressure valve is disposed at the gas inlet end of the gas injection pipeline.
The gas injection displacement oil recovery experimental device is characterized in that the gas injection pipeline is provided with a vent valve and a safety valve.
The gas injection displacement oil recovery experimental device is characterized in that a clamp valve is arranged on the gas injection pipeline, and the clamp valve is arranged at the gas outlet end of the gas injection pipeline.
The gas injection displacement oil recovery experimental device is characterized in that the outlet end of the liquid discharge pipeline is provided with a measuring cylinder for collecting liquid.
The utility model discloses a gas injection displacement oil recovery experimental apparatus's characteristics and advantage are:
1. by adopting the gas injection displacement oil extraction experimental device, the oil displacement effect of the non-hydrocarbon gas under the conditions of different temperatures and/or different pressures can be simulated by changing the clamping pressure of the rock core holder and/or the heating temperature of the constant-temperature electric heating jacket; the experimental device of the utility model has simple structure, convenient operation, time saving and labor saving;
2. the utility model discloses an exit at rock core holder sets up the relief pressure valve, enables the oiliness rock core and obtains appropriate displacement pressure differential to gaseous is driven crude oil through the oiliness rock core smoothly, guarantees to test going on smoothly, improves the accuracy of experiment.
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 diagram of an embodiment of the gas injection displacement oil recovery experimental apparatus of the present invention.
Main element number description:
1. a core holder; 2. an air injection line; 3. a liquid discharge line; 4. a constant temperature electric heating jacket;
5. a first pressure sensor; 6. a second pressure sensor; 7. a pressure reducing valve; 8. a temperature sensor;
9. a warm pressure acquisition system; 10. a gas injection valve; 11. a pressure gauge; 12. a gas flow meter; 13. an atmospheric valve;
14. a safety valve; 15. a first branch line; 16. a second branch line; 17. a gripper valve;
18. a measuring cylinder.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a gas injection displacement oil recovery experimental apparatus, it includes the rock core holder 1 that is used for holding the oil-containing rock core, gas injection pipeline 2 with the entry linkage of rock core holder 1, the drainage line 3 with the exit linkage of rock core holder 1, and be used for the constant temperature electric jacket 4 to the oil-containing rock core heating, rock core holder 1 locates in the constant temperature electric jacket 4, wherein gas injection pipeline 2 is connected with the non-hydrocarbon gas supply source, in order to supply non-hydrocarbon gas, rock core holder 1 can pressurize the oil-containing rock core, in order to simulate formation pressure, constant temperature electric jacket 4 can heat and keep warm to the rock core, in order to simulate formation temperature, during the experiment, non-hydrocarbon gas that the non-hydrocarbon gas supply source supplied flows after gas injection pipeline 2, get into the oil-containing rock core in rock core holder 1, non-hydrocarbon gas carries out the displacement to the crude oil in the oil-containing rock core, the crude oil of displacement flows out from drainage line 3, crude oil is collected at the outlet of the drainage line 3, and the crude oil recovery ratio is calculated based on the amount of the collected crude oil.
Adopt the utility model discloses a gas injection displacement oil recovery experimental apparatus, through the heating temperature who changes the centre gripping pressure of rock core holder 1 and/or constant temperature electric jacket 4, can simulate non-hydrocarbon gas displacement of reservoir oil effect under different temperature and/or different pressure conditions. By setting the clamping pressure of the core holder 1 and the heating temperature of the constant-temperature electric heating jacket 4 as the formation pressure and the formation temperature, the oil displacement effect of non-hydrocarbon gas under the condition of a heterogeneous oil reservoir formation can be simulated, and the accuracy and the reliability of the experiment are improved. The utility model discloses a gas injection displacement oil recovery experimental apparatus simple structure, convenient operation, labour saving and time saving.
As shown in fig. 1, further, a first pressure sensor 5 is arranged at an inlet of the core holder 1, a second pressure sensor 6 is arranged at an outlet of the core holder 1, and a pressure reducing valve 7 is further connected to the outlet of the core holder 1, so that during an experiment, the pressure at the outlet of the core holder 1 is lower than the pressure at the inlet of the core holder 1 by adjusting the pressure reducing valve 7, and thus the oil-containing core obtains a proper displacement pressure difference, so that gas can smoothly pass through the oil-containing core to displace crude oil; through setting up first pressure sensor 5 and second pressure sensor 6, can real-time supervision rock core holder 1's entrance and the pressure in exit to obtain displacement pressure differential, improve the accuracy of experiment. Specifically, the pressure reducing valve 7 is provided on the liquid discharge line 3.
As shown in fig. 1, a temperature sensor 8 is further disposed on the core holder 1 to monitor the temperature of the oil-containing core.
As shown in fig. 1, further, the gas injection displacement oil recovery experimental apparatus further includes a warm-pressing acquisition system 9, and the first pressure sensor 5, the second pressure sensor 6 and the temperature sensor 8 are all electrically connected to the warm-pressing acquisition system 9 to acquire pressure and temperature data in real time, and according to the pressure and temperature data acquired by the warm-pressing acquisition system 9, the gas injection pressure and the heating temperature of the constant temperature electric jacket 4 are adjusted, so that the formation conditions can be simulated more truly, and the accuracy of the experiment is improved. For example, the warm-pressure collecting system 9 is a computer.
As shown in fig. 1, a gas injection valve 10, a pressure gauge 11 and a gas flowmeter 12 are further provided on the gas injection line 2, and the gas injection valve 10 regulates gas injection, opens or closes gas injection, the pressure gauge 11 records gas injection pressure, and the gas flowmeter 12 records gas injection speed.
Specifically, the gas injection valve 10 is a high-pressure valve, and the high-pressure valve is disposed at the gas inlet end of the gas injection line 2, or the high-pressure valve is disposed on a section of the gas injection line 2 close to the non-hydrocarbon gas supply source.
As shown in fig. 1, a vent valve 13 and a safety valve 14 are further provided on the gas injection line 2. Wherein, atmospheric valve 13's effect is the chemical reagent of being convenient for after the experiment evacuation pipeline, prevents to corrode the pipeline, and safety valve 14's effect prevents to take place danger because of the pressure is too high in the experimentation, plays and reminds warning effect.
For example, the purge valve 13 is provided on the first branch line 15, the relief valve 14 is provided on the second branch line 16, and both the first branch line 15 and the second branch line 16 are connected to the gas-injection line 2.
As shown in fig. 1, a holder valve 17 is further disposed on the gas injection line 2, and the holder valve 17 is disposed at the gas outlet end of the gas injection line 2, or the holder valve 17 is disposed on a section of the gas injection line 2 near the inlet of the core holder 1, so as to control the connection and disconnection between the gas injection line 2 and the core holder 1.
For example, the gas injection valve 10, the pressure gauge 11, the gas flow meter 12, and the gripper valve 17 are arranged in this order on the gas injection line 2 in the gas flow direction, and the first branch line 15 and the second branch line 16 are connected to a section of the gas injection line between the gas flow meter 12 and the gripper valve 17.
As shown in fig. 1, the outlet end of the drainage line 3 is further provided with a measuring cylinder 18 for collecting liquid, so that the amount of crude oil can be measured, and the use is simple and convenient.
The utility model discloses a prior art's rock core holder and constant temperature electric jacket are no longer repeated its structure and theory of operation.
Adopt the utility model discloses a gas injection displacement oil recovery experimental apparatus, the experimental procedure is as follows:
weighing a proper amount of formation sand and crude oil according to a preset oil saturation degree, fully stirring the formation sand and the crude oil (namely an oil-containing rock core), and loading the formation sand and the crude oil into a rock core holder 1;
pressurizing and insulating the oil-containing rock core according to the original pressure and temperature conditions of the stratum (the time is determined according to the requirement);
opening the gas injection valve 10 and the gripper valve 17, injecting non-hydrocarbon gas, and controlling the flow rate by adjusting the gas injection valve 10;
adjusting a pressure reducing valve 7 to obtain a proper displacement pressure difference of the oil-containing rock core;
collecting the liquid flowing out from the outlet of the drainage pipeline 3 by using a measuring cylinder 18 until the injection of the non-hydrocarbon gas is finished;
sixthly, separating out the crude oil and calculating the recovery ratio of the crude oil.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.
Claims (10)
1. The gas injection displacement oil recovery experimental device is characterized by comprising a core holder for holding an oil-containing core, a gas injection pipeline connected with an inlet of the core holder, a liquid discharge pipeline connected with an outlet of the core holder, and a constant-temperature electric heating jacket for heating the oil-containing core, wherein the gas injection pipeline is connected with a non-hydrocarbon gas supply source, and the core holder is arranged in the constant-temperature electric heating jacket.
2. The gas injection displacement oil recovery experimental device according to claim 1, wherein a first pressure sensor is arranged at an inlet of the core holder, a second pressure sensor is arranged at an outlet of the core holder, and the outlet of the core holder is further connected with a pressure reducing valve.
3. The gas injection displacement oil recovery experimental facility of claim 2 wherein the pressure relief valve is disposed on the drain line.
4. The gas injection displacement oil recovery experimental device according to claim 2, wherein a temperature sensor is further arranged on the core holder.
5. The gas injection displacement oil recovery experimental device of claim 4, further comprising a warm pressure acquisition system, wherein the first pressure sensor, the second pressure sensor and the temperature sensor are all electrically connected to the warm pressure acquisition system.
6. The gas injection displacement oil recovery experimental facility of claim 1, wherein a gas injection valve, a pressure gauge and a gas flowmeter are arranged on the gas injection pipeline.
7. The gas injection displacement oil recovery experimental device of claim 6, wherein the gas injection valve is a high-pressure valve, and the high-pressure valve is arranged at the gas inlet end of the gas injection pipeline.
8. The gas injection displacement oil recovery experimental facility of any one of claims 1 to 7, wherein a blow-down valve and a safety valve are provided on the gas injection line.
9. The gas injection displacement oil recovery experimental device according to any one of claims 1 to 7, wherein a gripper valve is disposed on the gas injection pipeline, and the gripper valve is disposed at a gas outlet end of the gas injection pipeline.
10. The gas injection displacement oil recovery experimental device of any one of claims 1 to 7, wherein the outlet end of the liquid discharge line is provided with a measuring cylinder for collecting liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867131.0U CN212844895U (en) | 2020-05-21 | 2020-05-21 | Gas injection displacement oil extraction experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867131.0U CN212844895U (en) | 2020-05-21 | 2020-05-21 | Gas injection displacement oil extraction experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212844895U true CN212844895U (en) | 2021-03-30 |
Family
ID=75168887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020867131.0U Active CN212844895U (en) | 2020-05-21 | 2020-05-21 | Gas injection displacement oil extraction experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212844895U (en) |
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2020
- 2020-05-21 CN CN202020867131.0U patent/CN212844895U/en active Active
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