CN117330459A - Live oil dialysis experimental method - Google Patents
Live oil dialysis experimental method Download PDFInfo
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- CN117330459A CN117330459A CN202311634613.6A CN202311634613A CN117330459A CN 117330459 A CN117330459 A CN 117330459A CN 202311634613 A CN202311634613 A CN 202311634613A CN 117330459 A CN117330459 A CN 117330459A
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- 238000000502 dialysis Methods 0.000 title claims abstract description 92
- 238000002474 experimental method Methods 0.000 title claims abstract description 22
- 239000003921 oil Substances 0.000 claims abstract description 59
- 239000010779 crude oil Substances 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 42
- 239000000243 solution Substances 0.000 claims abstract description 27
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000011261 inert gas Substances 0.000 claims abstract description 13
- 239000000385 dialysis solution Substances 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 3
- 238000009738 saturating Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000012047 saturated solution Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 6
- 238000007790 scraping Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to the technical field of petroleum exploitation, in particular to a living oil dialysis experimental method, which comprises the following steps: s1, placing a core of saturated and degassed crude oil in a dialysis device, injecting solution gas into the dialysis device, and stabilizing to obtain a core of active oil with a saturated solution gas-oil ratio R; injecting inert gas to replace and remove redundant solution gas around the rock core; s3, injecting dialysis fluid after replacement is completed, replacing inert gas, and adjusting the dialysis device to an experimental temperature T 2 And experimental pressure P 2 And keeping, metering crude oil produced by dialysis in the dialysis device, and obtaining dialysis recovery ratio. In the method provided by the invention, under the condition of formation temperature and pressure, solution gas is injected into a core saturated with the de-aerated crude oil in a dialysis device, so that the solution gas is diffused into the crude oil to form a core saturated with the live oil in the dialysis device, a dialysis experiment of the live oil can be performed by directly injecting displacement fluid and adjusting temperature and pressure without moving the core, and dialysis is measuredRecovery ratio.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation, in particular to a living oil dialysis experimental method.
Background
In recent years, spontaneous dialysis has been attracting attention because of its simple operation, low cost, high efficiency, and the like. Especially, the unconventional reservoir with low porosity, low permeability and remarkable heterogeneity is not suitable for other development means. Spontaneous dialysis refers to the invasive process of replacing the non-wetting phase with the wetting phase of rock under capillary and/or gravitational forces. Capillary force can be described by the Young-Laplace equation:
（1）
in the formula (1), P c Capillary pressure, sigma is interfacial tension between crude oil and water phase, theta is crude oil-reservoir contact angle, and r is pore radius. θ is related to reservoir wettability. From equation (1), only when the reservoir wettability is changed to water wettability will the water be absorbed by the matrix, driving out the oil in the pores. Because the capillary pressure value is positively changed from negative when the wettability is changed from oil wettability to water wettability. Furthermore, if the reservoir is water-wet, the capillary pressure value is inversely proportional to the capillary radius and proportional to the IFT (interfacial tension). Thus, hypotonic reservoirs with small throat radii have a greater tendency to self-suction. The reduction of IFT in water flooding is advantageous.
The current indoor crude oil dialysis experimental research adopts the de-aerated crude oil as the main material, and compared with the dissolved gas crude oil under the stratum condition, the de-aerated crude oil has obvious differences in the aspects of crude oil-water interfacial tension sigma, crude oil-reservoir contact angle theta, crude oil viscosity and the like. As can be seen from the formula (1), the capillary force suffered by the indoor crude oil in degassing is greatly different from the capillary force of the reservoir living oil (crude oil containing dissolved gas), and the experimental dialysis rule in the indoor experiment and the actual dialysis rule of the reservoir have great errors, so that the experimental device and the experimental flow need to be improved.
In the prior art, the method for saturating the core with the de-aerated crude oil generally comprises the steps of vacuumizing the core in a device, and then saturating the core with the de-aerated crude oil, but the method cannot be used for saturating the active oil, because the active oil contains dissolved gas, the dissolved gas can escape from the core under the state of being lower than the saturation pressure P, and the active oil is changed into the de-aerated crude oil. On the basis, in the prior art, in order to saturate the active oil, after the core is vacuumized, the core is firstly saturated with petroleum ether, kerosene, stratum water or other intermediate media so as to separate the core from the vacuum environment, and then the intermediate media in the core are displaced by using the active oil, so that the saturated active oil is realized. However, in the process of saturating the live oil of the core, the displacement principle is required to be utilized, the cylindrical surface of the core is required to be clamped, so that the live oil flows from one end of the core to the other end to displace the intermediate medium to realize the saturated live oil.
Thus, according to the methods provided by the prior art, no dialysis experiments of live oil can be performed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a living oil dialysis experiment method, which comprises the steps of firstly using the prior method to saturate stratum water and de-aerated crude oil on a core, transferring the core saturated with the de-aerated crude oil into an experiment device, injecting solution gas under the condition of temperature and pressure to change the de-aerated crude oil into the living oil, keeping the temperature and pressure, cleaning the surface of the core, and then injecting dialysis fluid into the experiment device to perform experiments to obtain the dialysis recovery ratio of the living oil.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a live oil dialysis experimental method, comprising the steps of:
s1, core saturated live oil, namely placing a core of saturated and degassed crude oil in a dialysis device, injecting solution gas into the dialysis device, and keeping the temperature T in the dialysis device according to a relation curve of the maximum solubility of the solution gas in the crude oil and the temperature and the pressure 1 And pressure P 1 After the pressure is stabilized, the saturated dissolved gasoline ratio R is obtained s Is a core of live oil;
s2, core treatment, namely injecting inert gas to replace and remove redundant solution gas around the core;
s3, measuring dialysis recovery ratio, injecting dialysis fluid after replacement, replacing inert gas, and adjusting the dialysis device to the experimental temperature T 2 And experimental pressure P 2 And keeping, measuring crude oil produced by dialysis in the dialysis device, and calculating dialysis recovery ratio under the dialysis.
In the existing method for saturating the active oil of the core, in the state of clamping the core, an intermediate medium is saturated firstly, then a displacement principle is utilized, the active oil moves from one end of the core to the other end, and the saturated active oil is realized while the intermediate medium is displaced.
In the living oil dialysis experiment method provided by the invention, under the condition of formation temperature and pressure, solution gas is injected into the core saturated with the de-aerated crude oil in the dialysis device, so that the solution gas is diffused into the crude oil to form the core saturated with the living oil in the dialysis device, the living oil dialysis experiment can be performed by directly injecting displacement fluid and adjusting temperature and pressure without moving the core, and the dialysis recovery ratio is measured. The calculation method of the specific dialysis recovery ratio adopts a calculation method known in the art, such as a calculation formula given in oil layer physics (Li Aifen, zhang Zhiying), and other existing calculation methods can be adopted as required.
Preferably, in step S1, the temperature T 1 And pressure P 1 And the injected solution gas and the de-aerated crude oil satisfy the gas-liquid ratio and the saturation temperature and pressure relationship of the solution gas and the de-aerated crude oil.
Preferably, in step S2, after the core of the saturated live oil is obtained, the volume coefficient B of the crude oil dissolved with the gas under the current condition due to the overflow of the crude oil by volume expansion after the gas is dissolved o The volume V of overflowed crude oil can be known 1 When the volume of crude oil produced under dialysis is measured, crude oil V produced by crude oil swelling is eliminated 1 。
By injecting inert gas, the dissolved gas around the rock core is driven out from the device, so that the reaction and dissolution of the dissolved gas and dialysis fluid are avoided, and the accuracy of dialysis recovery ratio measurement is further improved.
Preferably, in step S3, the temperature T 2 And experimental pressure P 2 The maximum solubility of the dissolved gas is more than T under the condition of meeting the temperature and the pressure 1 And pressure P 1 Maximum solubility in the state.
Preferably, in step S1, the pressure stabilizing conditions are such that the pressure change in the dialysis apparatus is less than 0.01KPa over 24 hours.
Preferably, the dissolved gas is comprised of at least one of methane, ethane, natural gas, carbon dioxide, nitrogen, and other gases dissolved in the crude oil.
Preferably, the de-aerated crude oil is all types of crude oil produced from oilfield reservoirs adapted for dialysis development.
Preferably, the core is of all types suitable for use in an oilfield reservoir developed by dialysis.
Preferably, the inert gas is comprised of at least one of nitrogen, helium, and the like that does not rapidly dissolve and chemically react with the crude oil and dialysis fluid.
Preferably, the dialysis fluid includes, but is not limited to, formation water, surfactant solutions, nanomaterial dispersions, chemical-nanomaterial dispersions, and the like, capable of percolating crude oil in the core under capillary forces.
The beneficial effects of the invention are as follows:
in the living oil dialysis experiment method provided by the invention, under the condition of formation temperature and pressure, solution gas is injected into the core saturated with the de-aerated crude oil in the dialysis device, so that the solution gas is diffused into the crude oil to form the core saturated with the living oil in the dialysis device, the core is not required to be moved, after the core is treated, displacement fluid is directly injected, and the temperature and pressure are regulated, so that the dialysis experiment of the living oil can be carried out, the dialysis recovery ratio is measured, and the technical prejudice that the living oil under the condition of the formation cannot be subjected to the dialysis experiment in the prior art is overcome.
Drawings
FIG. 1 is a schematic structural diagram of an experimental apparatus provided in example 1;
wherein, 1. A discharge pipeline; 2. a housing; 3. a metering cavity; 4. core; 5. a dialysis chamber; 6. a core fixing device; 7. a blocking member; 8. an injection line; 9. and the oil scraping piece.
Detailed Description
The invention will be further described with reference to the drawings and examples.
In the embodiment, the devices and reagents used are all existing devices and reagents, and are not described herein.
The invention provides a living oil dialysis experimental method, which specifically comprises the following steps:
s1, placing a core of saturated and degassed crude oil in a dialysis device, injecting solution gas into the dialysis device, and keeping the temperature T in the dialysis device 1 And pressure P 1 When the pressure is stable, the core saturated with the living oil with the predetermined dissolved gasoline ratio R is obtained, and the pressure change of the dialysis device is less than 0.01KPa within 24 hours under the condition of stable pressure;
s2, core treatment, namely injecting inert gas to replace and remove redundant solution gas around the core;
s3, injecting dialysis fluid after replacement is completed, replacing inert gas in the device, and adjusting the dialysis device to an experimental temperature T 2 And experimental pressure P 2 Ensures that the maximum solubility of the dissolved gas in the adjusted state is greater than T 1 And pressure P 1 Maximum solubility in the state fromWhile avoiding the precipitation of dissolved gas, the crude oil dissolves R under the temperature and the pressure s The volume coefficient of the double gas is B o Calculating the fixed volume V of the crude oil overflowed due to the expansion of dissolved gas 1 And (3) as fixed error elimination, measuring crude oil produced by dialysis in a dialysis device to obtain dialysis recovery ratio.
Example 1:
as shown in fig. 1, the experimental device used in the implementation comprises a shell 2, the shell 2 is made of high-temperature and high-pressure resistant materials, a dialysis cavity 5 and a metering cavity 3 which are communicated are arranged in the shell, the dialysis cavity 5 is used for placing a rock core 4, the metering cavity 3 is positioned above the dialysis cavity 5, a visual scale window which is equal in height to the metering cavity 3 is arranged on the shell 2, the bottom end of the dialysis cavity 5 is communicated with the outside and provided with a plugging piece 7, a rotatable rock core fixing device 6 is arranged on the plugging piece 7, an injection channel which penetrates up and down is formed in the plugging piece 7, the injection channel is connected with an injection pipeline 8, the top end of the metering cavity 3 is communicated with the outside through a discharge pipeline 1, an oil scraping piece 9 is also fixed in the dialysis cavity 5, and the oil scraping piece 9 is in an L shape and is tightly attached to the rock core 4.
In this embodiment, natural gas is used as the solution gas, nitrogen is used as the inert gas, 0.05wt% surfactant A solution is used as the dialysis fluid, and living oil dialysis is performed by using the experimental apparatus, comprising the steps of:
saturated stratum water and saturated crude oil of a core with the diameter of 2.5cm and the length of 10cm and the permeability of 10mD are filled into a dialysis cavity after the core is fixed in a core fixing device,
and flushing air in the dialysis cavity by adopting natural gas, then injecting the natural gas to the saturation pressure of 6.4MPa when the ratio of the dissolved gasoline is 15, keeping the temperature of the dialysis cavity at 50 ℃, and properly supplementing the gas to maintain the pressure at the saturation pressure, so that the natural gas is diffused into the rock core under the temperature and pressure conditions until the pressure change in 24 hours is less than 0.01kPa. Crude oil in the core is considered to have dissolved 15 volumes of natural gas at this point.
Nitrogen is injected into the dialysis cavity, and natural gas is discharged. And the temperature and pressure in the device were adjusted to 70℃and 8MPa. A surfactant solution with a concentration of 0.05wt% was injected from the bottom of the dialysis chamber, and the nitrogen was replaced entirely. And the oil scraping piece is used for removing crude oil overflowed in the earlier stage due to the fact that the crude oil dissolves natural gas, and the reading is determined as the initial volume of a dialysis experiment. Recording the change condition of the volume of the separated oil in the metering cavity at the upper end of the device along with the time and the volume of the finally separated oil, and obtaining the dialysis recovery ratio of the surfactant to the live oil of the natural gas which is dissolved by 15 times of the volume under the conditions of 8MPa and 70 ℃ at the end of the experiment, wherein the dialysis recovery ratio is 13.4%.
Example 2:
in this embodiment, CO is used as the solution gas 2 Nitrogen is used as the inert gas, 0.05wt% of surfactant B solution is used as the dialysis fluid,
living oil dialysis was performed using the experimental setup provided in example 1, comprising the steps of:
saturated stratum water and saturated crude oil of a core with the diameter of 2.5cm and the length of 10cm and the permeability of 10mD are filled into a dialysis cavity after the core is fixed in a core fixing device,
by CO 2 The air in the dialysis cavity is flushed with air and then CO is injected 2 The gas is kept at a saturation pressure of 5.7MPa when the ratio of dissolved gasoline is 30, the temperature of the dialysis cavity is kept at 65 ℃, and the gas is properly supplemented to maintain the pressure at the saturation pressure until the pressure change in 24 hours is less than 0.01kPa. It is believed that the crude oil in the core at this time has dissolved 30 volumes of CO 2 。
Nitrogen is injected into the dialysis cavity to discharge CO 2 . And the temperature and pressure in the device are adjusted to 85 ℃ and 12MPa. A surfactant solution with a concentration of 0.05wt% was injected from the bottom of the dialysis chamber to displace nitrogen. And the oil scraping piece is used for removing CO dissolved by crude oil in the earlier stage 2 While the overflowed crude oil, the reading was determined as the initial volume of the dialysis experiment. Recording the time-dependent change of the volume of the separated oil in the metering cavity at the upper end of the device and the final volume of the separated oil, saturated with CO 2 The final dialysis recovery of the live oil of (2) was 15.59% for the control unsaturated CO 2 The final dialysis recovery of the degassed crude oil was 12.86%. Under the state of a real stratum, as the crude oil is dissolved with carbon dioxide, the viscosity is reduced, and the oil recovery rate of a dialysis mode is higher.
Claims (5)
1. The living oil dialysis experimental method is characterized by comprising the following steps of:
s1, saturating live oil by using a core, placing the core of saturated and degassed crude oil in a dialysis device, injecting solution gas into the dialysis device, and keeping the temperature T in the dialysis device 1 And pressure P 1 After the pressure is stabilized, the saturated dissolved gasoline ratio R is obtained s Is a core of live oil;
s2, core treatment, namely injecting inert gas to replace and remove redundant solution gas around the core;
s3, measuring dialysis recovery ratio, injecting dialysis fluid after replacement, replacing inert gas, and adjusting the dialysis device to the experimental temperature T 2 And experimental pressure P 2 And keeping, metering crude oil produced by dialysis in the dialysis device, and obtaining dialysis recovery ratio.
2. The method of claim 1, wherein in step S1, the temperature T is 1 And pressure P 1 And the injected solution gas and the de-aerated crude oil satisfy the gas-oil ratio and the saturation temperature and pressure relationship of the solution gas and the de-aerated crude oil.
3. The method according to claim 1, wherein in step S2, the ratio of dissolved gas to oil in the crude oil is maintained constant at R when the inert gas is injected s 。
4. The method of claim 1, wherein in step S3, the temperature T is 2 And experimental pressure P 2 The maximum solubility of the dissolved gas is more than T under the condition of meeting the temperature and the pressure 1 And pressure P 1 Maximum solubility in the state.
5. The method of claim 1, wherein in step S1, the pressure stabilizing condition is that the pressure change in the dialysis apparatus is less than 0.01KPa within 24 hours.
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| CN202311634613.6A CN117330459B (en) | 2023-12-01 | 2023-12-01 | Live oil dialysis experimental method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190331578A1 (en) * | 2018-04-25 | 2019-10-31 | Total Sa | Method for determining a relation between an initial saturation and a residual saturation in a first fluid in a porous sample and related assemly |
| CN111255444A (en) * | 2020-01-09 | 2020-06-09 | 中海石油(中国)有限公司 | Method for measuring relative permeability of oil and gas in stratum |
| CN112198093A (en) * | 2020-10-09 | 2021-01-08 | 中国石油大学(华东) | Device and method for testing diffusion coefficient of gas in saturated live oil core |
| CN113504171A (en) * | 2021-07-13 | 2021-10-15 | 西南石油大学 | Device and method for measuring reservoir salt deposition damage and evaluating salt dissolving agent effect |
| CN115683978A (en) * | 2022-11-11 | 2023-02-03 | 中海石油(中国)有限公司 | Spontaneous imbibition experimental measurement device capable of accurately simulating reservoir and field development conditions |
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- 2023-12-01 CN CN202311634613.6A patent/CN117330459B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190331578A1 (en) * | 2018-04-25 | 2019-10-31 | Total Sa | Method for determining a relation between an initial saturation and a residual saturation in a first fluid in a porous sample and related assemly |
| CN111255444A (en) * | 2020-01-09 | 2020-06-09 | 中海石油(中国)有限公司 | Method for measuring relative permeability of oil and gas in stratum |
| CN112198093A (en) * | 2020-10-09 | 2021-01-08 | 中国石油大学(华东) | Device and method for testing diffusion coefficient of gas in saturated live oil core |
| CN113504171A (en) * | 2021-07-13 | 2021-10-15 | 西南石油大学 | Device and method for measuring reservoir salt deposition damage and evaluating salt dissolving agent effect |
| CN115683978A (en) * | 2022-11-11 | 2023-02-03 | 中海石油(中国)有限公司 | Spontaneous imbibition experimental measurement device capable of accurately simulating reservoir and field development conditions |
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