CN117090544A - Carbon dioxide distribution monitoring simulation system - Google Patents
Carbon dioxide distribution monitoring simulation system Download PDFInfo
- Publication number
- CN117090544A CN117090544A CN202311356690.XA CN202311356690A CN117090544A CN 117090544 A CN117090544 A CN 117090544A CN 202311356690 A CN202311356690 A CN 202311356690A CN 117090544 A CN117090544 A CN 117090544A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- pressure
- simulation system
- oil layer
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 238000004088 simulation Methods 0.000 title claims abstract description 96
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 87
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 87
- 238000012544 monitoring process Methods 0.000 title claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims description 72
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 239000010779 crude oil Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 54
- 239000007789 gas Substances 0.000 description 16
- 238000009792 diffusion process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Abstract
The invention provides a carbon dioxide distribution monitoring simulation system, which comprises: the system comprises a carbon dioxide injection system, an oil layer simulation system, a pressure-temperature cabin, a gas concentration-pressure-temperature sensing system and a back pressure device; the oil layer simulation system is arranged in the pressure-temperature cabin, and the pressure-temperature cabin is used for controlling the pressure and the temperature in the oil layer simulation system; the carbon dioxide injection system is connected with an inlet of the oil layer simulation system; the outlet of the oil layer simulation system is connected with a back pressure device; based on the carbon dioxide distribution monitoring simulation system, a simulation method for monitoring carbon dioxide distribution of carbon dioxide flooding is constructed, real oil layer conditions are simulated, the monitoring of the distribution rule of supercritical carbon dioxide in an oil layer under different injection pressure and injection flow conditions and the pressure and temperature changes of different positions of the oil layer are realized, the basis is provided for on-site carbon dioxide flooding and burying, and safety accidents are avoided.
Description
Technical Field
The invention relates to the technical field of carbon dioxide geological sequestration, in particular to a carbon dioxide distribution monitoring simulation system.
Background
Compared with other gases (natural gas, flue gas, nitrogen), under the same conditions, CO 2 The oil-displacing agent has the advantages of strong injection capacity, large expansion coefficient, low minimum miscible pressure, low oil displacement cost, recycling, good miscibility with crude oil and the like, and can improve the recovery ratio (EOR) by 5-10% on the basis of oilfield water injection development and great recovery ratio potential. From the research at home and abroad, CO 2 Has extremely strong permeability, is easy to enter micro pores, and is CO when in a supercritical state 2 The density is close to that of liquid, the viscosity is close to that of gas, the diffusion coefficient is 100 times of that of liquid, and the liquid has larger dissolving power and CO 2 Diffusion and mass transfer effects occur between the capillary force and the fluid, so that interfacial tension is eliminated, and trapping of capillary force on oil gas is reduced. The crude oil is displaced by using the viscosity-reducing, swelling, dissolved gas flooding and other mechanisms, so that the recovery ratio of the crude oil is improved.
Although at present, CO is produced at home and abroad 2 The oil displacement technology is mature, but the gas displacement speed in the stratum is far faster than the liquid displacement speed in the stratum, so that a significant difference is formed between gas displacement and water displacement, namely the pressure of the water displacement is generally gradual in the process of being effective, the gas displacement is displayed in a sudden change form in the process of being effective, and the change of the pressure can cause a wellThe spraying is out of control, thereby generating safety accidents. Therefore, the simulation method for monitoring the carbon dioxide distribution by carbon dioxide flooding is very practical.
Disclosure of Invention
The invention aims to provide a carbon dioxide distribution monitoring simulation system, which can simulate real oil layer conditions, realize monitoring of the distribution rule of supercritical carbon dioxide in an oil layer under different injection pressure and injection flow conditions, namely monitoring of the diffusion condition of carbon dioxide in the oil layer in the supercritical carbon dioxide displacement process and the pressure and temperature changes of different positions of the oil layer, provide basis for on-site carbon dioxide displacement and burial, and avoid safety accidents.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a carbon dioxide distribution monitoring simulation system, which comprises: the system comprises a carbon dioxide injection system, an oil layer simulation system, a pressure-temperature cabin, a gas concentration-pressure-temperature sensing system and a back pressure device;
the oil layer simulation system is arranged in the pressure-temperature cabin, and the pressure-temperature cabin is used for controlling the pressure and the temperature in the oil layer simulation system;
the carbon dioxide injection system is connected with an inlet of the oil layer simulation system;
and an outlet of the oil layer simulation system is connected with a back pressure device.
Preferably, the carbon dioxide injection system injects carbon dioxide with a preset flow rate and a preset state into the core of the reservoir simulation system.
Preferably, the oil layer simulation system comprises a core and a coating layer, wherein the core is used for simulating a rock structure in an actual stratum, the core is provided with pores, and the coating layer is coated outside the core.
Preferably, each monitoring end of the gas concentration-pressure-temperature sensing system is uniformly inserted into the hole of the core of the oil layer simulation system, and is used for monitoring the carbon dioxide concentration, pressure and temperature change in the oil layer simulation system in real time.
Preferably, the back pressure device is connected with a recovery system, when the pressure of the oil layer simulation system reaches a second preset pressure, the back pressure device is conducted, and the recovery system receives fluid led out from the oil layer simulation system.
The invention also provides a simulation method for monitoring carbon dioxide distribution by carbon dioxide flooding, which comprises the following steps:
constructing the carbon dioxide distribution monitoring simulation system according to the technical scheme;
saturated oil treatment is carried out on the oil layer simulation system;
regulating the pressure of the oil layer simulation system to a first preset pressure through the pressure-temperature cabin, and regulating the temperature of the oil layer simulation system to the simulated stratum temperature;
the pressure of the back pressure device is regulated to a second preset pressure, the pressure in the oil layer simulation system is regulated to the second preset pressure, and the first preset pressure is larger than the second preset pressure;
injecting carbon dioxide with preset flow and preset state into the core of the oil layer simulation system through a carbon dioxide injection system to displace crude oil;
and monitoring the carbon dioxide concentration, pressure and temperature change conditions of an oil layer simulation system in the carbon dioxide displacement and burying process through a gas concentration-pressure-temperature sensing system.
The invention provides a carbon dioxide distribution monitoring simulation system, which comprises: the system comprises a carbon dioxide injection system, an oil layer simulation system, a pressure-temperature cabin, a gas concentration-pressure-temperature sensing system and a back pressure device; the oil layer simulation system is arranged in the pressure-temperature cabin, and the pressure-temperature cabin is used for controlling the pressure and the temperature in the oil layer simulation system; the carbon dioxide injection system is connected with an inlet of the oil layer simulation system; and an outlet of the oil layer simulation system is connected with a back pressure device. The invention utilizes the carbon dioxide distribution monitoring simulation system to construct a simulation method for monitoring carbon dioxide distribution of carbon dioxide flooding, and by utilizing the method provided by the invention, the real oil layer condition can be simulated, the monitoring of the distribution rule of supercritical carbon dioxide in the oil layer under different injection pressure and injection flow conditions, namely the monitoring of the diffusion condition of carbon dioxide in the oil layer in the supercritical carbon dioxide flooding process and the pressure and temperature changes of different positions of the oil layer, can provide basis for on-site carbon dioxide flooding and burying, and can avoid the occurrence of safety accidents.
Drawings
FIG. 1 is a schematic diagram of a carbon dioxide distribution monitoring simulation system according to the present invention.
Description of the reference numerals
1. A carbon dioxide injection system; 2. an oil layer simulation system; 3. pressure-temperature cabin; 4. a gas concentration-pressure-temperature sensing system; 5. a back pressure device; 6. a recovery system; 7. an inlet; 8. and an outlet.
Detailed Description
The invention provides a carbon dioxide distribution monitoring simulation system, which comprises: the system comprises a carbon dioxide injection system, an oil layer simulation system, a pressure-temperature cabin, a gas concentration-pressure-temperature sensing system and a back pressure device;
the oil layer simulation system is arranged in the pressure-temperature cabin, and the pressure-temperature cabin is used for controlling the pressure and the temperature in the oil layer simulation system;
the carbon dioxide injection system is connected with an inlet of the oil layer simulation system;
and an outlet of the oil layer simulation system is connected with a back pressure device.
As shown in fig. 1, in the embodiment of the present invention, the carbon dioxide injection system preferably injects carbon dioxide with a preset flow rate and a preset state into the core of the reservoir simulation system.
In an embodiment of the present invention, the carbon dioxide in the preset state is preferably gaseous carbon dioxide, liquid carbon dioxide or supercritical carbon dioxide.
In an embodiment of the present invention, the reservoir simulation system preferably includes a core and a casing; the rock core is used for simulating a rock structure in an actual stratum, the rock core is provided with pores, and the wrapping layer is wrapped outside the rock core.
In an embodiment of the present invention, a material of the wrapping layer is preferably epoxy resin.
In the present invention, the reservoir simulation system preferably further includes an adjusting mechanism for adjusting a spatial structure of the reservoir simulation system. According to the invention, the spatial structure of the oil layer simulation system is regulated by the regulating mechanism so as to change the direction of carbon dioxide flooding, and the carbon dioxide distribution condition of the oil layer simulation system with different spatial structures is researched.
In the embodiment of the invention, each monitoring end of the gas concentration-pressure-temperature sensing system is preferably uniformly inserted into the pore of the core of the oil layer simulation system and is used for monitoring the carbon dioxide concentration, pressure and temperature change in the oil layer simulation system in real time. In the invention, the number of the monitoring ends is preferably set according to the space size of the oil layer simulation system, so that the condition of gas concentration, pressure and temperature of the whole oil layer simulation system can be accurately realized.
In an embodiment of the invention, the back pressure device is connected to a recovery system, and when the pressure of the reservoir simulation system reaches a second preset pressure, the back pressure device is turned on, and the recovery system receives the fluid led out from the reservoir simulation system.
The invention also provides a simulation method for monitoring carbon dioxide distribution by carbon dioxide flooding, which comprises the following steps:
constructing the carbon dioxide distribution monitoring simulation system according to the technical scheme;
saturated oil treatment is carried out on the oil layer simulation system;
regulating the pressure of the oil layer simulation system to a first preset pressure through the pressure-temperature cabin, and regulating the temperature of the oil layer simulation system to the simulated stratum temperature;
the pressure of the back pressure device is regulated to a second preset pressure, the pressure in the oil layer simulation system is regulated to the second preset pressure, and the first preset pressure is larger than the second preset pressure;
injecting carbon dioxide with preset flow and preset state into the core of the oil layer simulation system through a carbon dioxide injection system to displace crude oil;
and monitoring the carbon dioxide concentration, pressure and temperature change conditions of an oil layer simulation system in the carbon dioxide displacement and burying process through a gas concentration-pressure-temperature sensing system.
The method of the present invention for treating the saturated oil is not particularly limited, and may be any method known in the art.
In the invention, the first preset pressure can be generally 2-5 MPa greater than the second preset pressure, so that the outer wall of the oil layer simulation system is generally in a pressed state.
The invention utilizes the carbon dioxide distribution monitoring simulation system to construct a simulation method for monitoring carbon dioxide distribution of carbon dioxide flooding, and by utilizing the method provided by the invention, the real oil layer condition can be simulated, the monitoring of the distribution rule of supercritical carbon dioxide in the oil layer under different injection pressure and injection flow conditions, namely the monitoring of the diffusion condition of carbon dioxide in the oil layer in the supercritical carbon dioxide flooding process and the pressure and temperature changes of different positions of the oil layer, can provide basis for on-site carbon dioxide flooding and burying, and can avoid the occurrence of safety accidents.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A carbon dioxide distribution monitoring simulation system, comprising: the system comprises a carbon dioxide injection system, an oil layer simulation system, a pressure-temperature cabin, a gas concentration-pressure-temperature sensing system and a back pressure device;
the oil layer simulation system is arranged in the pressure-temperature cabin, and the pressure-temperature cabin is used for controlling the pressure and the temperature in the oil layer simulation system;
the carbon dioxide injection system is connected with an inlet of the oil layer simulation system;
and an outlet of the oil layer simulation system is connected with a back pressure device.
2. The carbon dioxide distribution monitoring simulation system of claim 1, wherein the carbon dioxide injection system injects carbon dioxide at a preset flow rate and a preset state into a core of the reservoir simulation system.
3. The carbon dioxide distribution monitoring simulation system of claim 1, wherein the reservoir simulation system comprises a core and a coating, the core being configured to simulate a rock structure in an actual formation, the core having pores, the coating being coated outside the core.
4. The carbon dioxide distribution monitoring simulation system according to claim 1, wherein each monitoring end of the gas concentration-pressure-temperature sensing system is uniformly inserted into a hole of a core of the oil layer simulation system, and is used for monitoring carbon dioxide concentration, pressure and temperature changes in the oil layer simulation system in real time.
5. The carbon dioxide distribution monitoring simulation system of claim 1, wherein the back pressure device is connected to a recovery system, the back pressure device being turned on when the pressure of the reservoir simulation system reaches a second predetermined pressure, the recovery system receiving fluid derived from the reservoir simulation system.
6. A simulation method for monitoring carbon dioxide distribution by carbon dioxide flooding comprises the following steps:
constructing the carbon dioxide distribution monitoring simulation system according to any one of claims 1-5;
saturated oil treatment is carried out on the oil layer simulation system;
regulating the pressure of the oil layer simulation system to a first preset pressure through the pressure-temperature cabin, and regulating the temperature of the oil layer simulation system to the simulated stratum temperature;
the pressure of the back pressure device is regulated to a second preset pressure, the pressure in the oil layer simulation system is regulated to the second preset pressure, and the first preset pressure is larger than the second preset pressure;
injecting carbon dioxide with preset flow and preset state into the core of the oil layer simulation system through a carbon dioxide injection system to displace crude oil;
and monitoring the carbon dioxide concentration, pressure and temperature change conditions of an oil layer simulation system in the carbon dioxide displacement and burying process through a gas concentration-pressure-temperature sensing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311356690.XA CN117090544A (en) | 2023-10-19 | 2023-10-19 | Carbon dioxide distribution monitoring simulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311356690.XA CN117090544A (en) | 2023-10-19 | 2023-10-19 | Carbon dioxide distribution monitoring simulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117090544A true CN117090544A (en) | 2023-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311356690.XA Pending CN117090544A (en) | 2023-10-19 | 2023-10-19 | Carbon dioxide distribution monitoring simulation system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483449A (en) * | 2014-12-08 | 2015-04-01 | 中国石油大学(华东) | Device and method for measuring retention rate of carbon dioxide in oil displacement process |
| CN206957670U (en) * | 2017-05-10 | 2018-02-02 | 中国石油天然气股份有限公司 | It is a kind of to simulate system of the carbon dioxide gas drive to the microcosmic displacement process of cecum oil |
| US20220003079A1 (en) * | 2020-09-25 | 2022-01-06 | Keyuan Engineering Technology Testing Center Of Sichuan Province | Simulation analysis method for injection volume of alternate displacement of shale oil by carbon dioxide and nitrogen |
| US20220395786A1 (en) * | 2021-06-11 | 2022-12-15 | Yangtze University | Thickening carbon dioxide displacement visual analog device |
| CN115596435A (en) * | 2022-11-10 | 2023-01-13 | 山西工程技术学院（Cn） | Carbon dioxide distribution monitoring simulation method in process of displacing methane with carbon dioxide |
| CN116122805A (en) * | 2023-02-08 | 2023-05-16 | 中国石油大学(北京) | Carbon dioxide flooding and burying simulation device and method |
-
2023
- 2023-10-19 CN CN202311356690.XA patent/CN117090544A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483449A (en) * | 2014-12-08 | 2015-04-01 | 中国石油大学(华东) | Device and method for measuring retention rate of carbon dioxide in oil displacement process |
| CN206957670U (en) * | 2017-05-10 | 2018-02-02 | 中国石油天然气股份有限公司 | It is a kind of to simulate system of the carbon dioxide gas drive to the microcosmic displacement process of cecum oil |
| US20220003079A1 (en) * | 2020-09-25 | 2022-01-06 | Keyuan Engineering Technology Testing Center Of Sichuan Province | Simulation analysis method for injection volume of alternate displacement of shale oil by carbon dioxide and nitrogen |
| US20220395786A1 (en) * | 2021-06-11 | 2022-12-15 | Yangtze University | Thickening carbon dioxide displacement visual analog device |
| CN115596435A (en) * | 2022-11-10 | 2023-01-13 | 山西工程技术学院（Cn） | Carbon dioxide distribution monitoring simulation method in process of displacing methane with carbon dioxide |
| CN116122805A (en) * | 2023-02-08 | 2023-05-16 | 中国石油大学(北京) | Carbon dioxide flooding and burying simulation device and method |
Non-Patent Citations (2)
| Title |
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