CN113250662B - Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method - Google Patents
Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method Download PDFInfo
- Publication number
- CN113250662B CN113250662B CN202110673799.0A CN202110673799A CN113250662B CN 113250662 B CN113250662 B CN 113250662B CN 202110673799 A CN202110673799 A CN 202110673799A CN 113250662 B CN113250662 B CN 113250662B
- Authority
- CN
- China
- Prior art keywords
- pressure
- imbibition
- well
- low
- oil
- 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.)
- Active
Links
- 238000005213 imbibition Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004088 simulation Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000002347 injection Methods 0.000 claims abstract description 46
- 239000007924 injection Substances 0.000 claims abstract description 46
- 238000002791 soaking Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000003129 oil well Substances 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims description 23
- 238000001764 infiltration Methods 0.000 claims description 20
- 230000008595 infiltration Effects 0.000 claims description 20
- 238000011084 recovery Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 15
- 238000000605 extraction Methods 0.000 abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000011282 treatment Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses an imbibition oil extraction method suitable for a low-permeability oil reservoir and a laboratory simulation method, wherein the imbibition oil extraction is carried out on the low-permeability oil reservoir through multiple water injection and soaking treatments, the oil extraction efficiency can be effectively improved, the oil can be pushed to adjacent oil wells in the handling process, the advantages of the imbibition oil extraction are exerted, meanwhile, in the simulation process of the low-permeability oil extraction experiment, the imbibition oil extraction efficiency under different conditions can be clearly observed through the arrangement of a plurality of comparison experiments and the determination of single variable and fixed conditions of the experiments, further, the imbibition oil extraction efficiency under different conditions can be conveniently applied to the actual oil extraction process according to the simulation experiment results, so that the actual oil extraction efficiency is improved, in the simulation experiment process, the comparison and comparison of a plurality of experiments can be carried out, the clear observation on the experiment process can be carried out, the accuracy of the experiment results can be ensured, and the experiment value is improved.
Description
Technical Field
The invention belongs to the technical field of oil reservoir development, and particularly relates to a imbibition oil production method and a laboratory simulation method suitable for a low-permeability oil reservoir.
Background
Imbibition oil recovery is a process of utilizing or limiting capillary force, and is an oil recovery method or technology of utilizing a chemical imbibition agent to change the wettability of the pore surfaces of rocks, promote or enhance the imbibition process, reduce capillary resistance, and improve injectivity and recovery efficiency. The oil extraction technology is especially significant for oil reservoirs with ultra-low permeability and ultra-low permeability (the permeability is below 10 mD). The oil reservoir faces the difficult problems of huge exploitation difficulty and low recovery rate, and the large reserve is a practical problem which must be faced and solved by the operators. The seepage oil extraction technology is slower to develop in China and has less application.
The existing oil extraction method applied to the low-permeability oil reservoir has low oil extraction efficiency in the low-permeability oil extraction process, and in the laboratory simulation process before oil extraction, the existing experimental simulation method has few comparison experiments, so that the data accuracy in the simulation process is low, and the deviation in the practical application process is large.
Disclosure of Invention
The invention aims to provide a imbibition oil production method and a laboratory simulation method suitable for a low-permeability reservoir, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an imbibition oil production method suitable for a low-permeability reservoir comprises the following steps:
s1, firstly, arranging a horizontal well in a low-permeability area for exploiting an oil reservoir, wherein the horizontal well comprises a huff-puff well and an oil production well, and the huff-puff well and the oil production well are arranged side by side;
s2, performing volume fracturing reservoir transformation on the huff-puff well and the oil production well, adjusting the pressure of the huff-puff well and the oil production well, and improving the formation pressure around the huff-puff well;
s3, injecting water into the oil production well and the huff-puff well, and stopping injecting water when the pressure at the end of a water injection period is equal to the pressure of the original stratum;
and S4, injecting an imbibition agent into the stratum after water injection is finished, closing the well after the injection is finished, starting an oil reservoir huff-and-puff process, entering soaking, opening the well for water injection again after the soaking is finished, enabling the pressure of the huff-and-puff bottom hole to reach the preset pressure and be less than the stratum saturation pressure, starting imbibition oil production, continuing water injection and soaking when the pressure is less than the preset pressure, and continuing for 3-5 times to finish the whole imbibition oil production.
Further, in S1, the huff-puff well and the oil production well are arranged at intervals, and in S2, the average fracturing construction displacement of the oil well subjected to volume fracturing transformation>5m 3 Min, the average interval of the fracturing sections is 75-95 m, and when the pressure around the well is adjusted, the water injection is stopped when the pressure is kept at 100 percent of the level.
Further, in S3 and S4, when water is injected into the well, the average speed of the water injection is maintained at 0.2-2 m/day, the average speed of the injection of the imbibition agent is 0.5-1.8 m/day, and the water injection rate is the accumulated water injection rate of one throughout period calculated when the pressure maintaining level is increased from the low level before throughout to the same pressure as the original formation pressure during the water injection process.
And further, in S4, controlling the time for carrying out the first soaking within 10-25 hours, and in the process of handling the oil reservoir horizontal well, soaking for 5-25 days.
A laboratory simulation method suitable for a low-permeability reservoir comprises the following steps:
a, putting a rock core into an imbibition container, and then putting the imbibition container into a thermostat with an observation window and monitoring equipment;
b, attaching and fixing the graduated scale to the inner wall of the infiltration container, filling the infiltration container with the infiltration medium, and reading the primary mark of the infiltration medium on the graduated scale after the infiltration medium is completely filled;
c, one group adjusts the temperature in the thermostat during imbibition and keeps the pressure unchanged, and the other group adjusts the pressure in the thermostat during imbibition through a pressure pump and keeps the temperature unchanged, records the marks of the imbibition medium on the graduated scale under different pressures and different temperatures, and stops metering until the imbibition medium is stable and unchanged;
and D, respectively taking the metering result and the time as an X-axis and a Y-axis to establish a fluctuation curve of the data, and determining the temperature and the pressure when the imbibition recovery rate is highest according to the fluctuation curve.
Further, in step A, the infiltration suction container and the thermostat are not less than two groups, the temperature in the thermostat is controlled on the stratum temperature surface, the monitoring equipment comprises a 360-degree dead-angle-free monitoring camera and a monitoring display screen connected with the camera, and the monitoring display screen is arranged outside the thermostat.
And step C, when the temperature in the constant temperature box is adjusted, the pressure is gradually increased by +/-0.5 ℃ every half hour, and when the pressure is adjusted, the pressure is gradually increased by +/-0.5 MPa every half hour.
Still further, in step C, the metering is stopped when the imbibing solution at the scale is not changing within 2 hours.
The invention has the technical effects and advantages that: this imbibition oil recovery method and laboratory simulation method suitable for hypotonic oil reservoir, through many times water injection and soaking well processing, carry out imbibition oil recovery to hypotonic oil reservoir again, can effectual improvement oil recovery's efficiency, and can be in the in-process of handling in, realize with the oil to adjacent oil well propelling movement, give play to the advantage of imbibition oil recovery, simultaneously in the in-process to hypotonic oil recovery experiment simulation, by the setting of a plurality of contrast experiments, and confirm single variable and the fixed condition of experiment, the imbibition oil recovery efficiency under the different conditions of observation that can be clear, and then can be according to the result of simulation experiment, conveniently use it in actual oil recovery process, efficiency when improving actual oil recovery, and the in-process of simulation experiment, by the contrast comparison of a plurality of experiments, and the clear observation to the experimentation in the experiment, can also ensure the accuracy of experimental result, the value of experiment has been improved.
Detailed Description
The technical solutions in the present disclosure will be clearly and completely described below with reference to the present disclosure, and it is obvious that the described contents are only a part of the present disclosure, and not all of the present disclosure. All other matters which can be obtained by a person skilled in the art without making creative efforts based on the contents of the present invention belong to the protection scope of the present invention.
The invention provides an imbibition oil production method and a laboratory simulation method suitable for a low-permeability reservoir, which comprise the following steps:
s1, firstly, arranging a horizontal well in a low-permeability area for exploiting an oil reservoir, wherein the horizontal well comprises a huff-puff well and an oil production well, and the huff-puff well and the oil production well are arranged side by side;
s2, performing volume fracturing reservoir transformation on the huff-puff well and the oil production well, adjusting the pressure of the huff-puff well and the oil production well, and improving the formation pressure around the huff-puff well;
s3, injecting water into the oil production well and the huff-puff well, and stopping injecting water when the pressure at the end of a water injection period is equal to the pressure of the original stratum;
and S4, injecting an imbibition agent into the stratum after water injection is finished, closing the well after the injection is finished, starting an oil reservoir huff-and-puff process, entering soaking, opening the well for water injection again after the soaking is finished, enabling the pressure of the huff-and-puff bottom hole to reach the preset pressure and be less than the stratum saturation pressure, starting imbibition oil production, continuing water injection and soaking when the pressure is less than the preset pressure, and continuing for 3-5 times to finish the whole imbibition oil production.
A laboratory simulation method suitable for a low-permeability reservoir comprises the following steps:
a, putting a rock core into a seepage container, and then putting the seepage container into a constant temperature box with an observation window and monitoring equipment;
b, attaching and fixing the graduated scale to the inner wall of the infiltration container, filling the infiltration container with the infiltration medium, and reading the primary mark of the infiltration medium on the graduated scale after the infiltration medium is completely filled;
c, one group adjusts the temperature in the thermostat during imbibition and keeps the pressure unchanged, and the other group adjusts the pressure in the thermostat during imbibition through a pressure pump and keeps the temperature unchanged, records the marks of the imbibition medium on the graduated scale under different pressures and different temperatures, and stops metering until the imbibition medium is stable and unchanged;
and D, respectively taking the metering result and the time as X-axis and Y-axis fluctuation curves of data, and determining the temperature and the pressure when the imbibition recovery rate is highest according to the fluctuation curves.
Example 1
In S1, the huff-puff wells and the oil production wells are arranged at intervals, and in S2, the average fracturing construction displacement of the oil wells subjected to volume fracturing transformation is 5m 3 Min, average frac interval 75m, and stopping water injection when pressure is maintained at 100% of the level while adjusting the pressure around the well.
In S3 and S4, the average speed of water injection is maintained at 0.2 m/day and the average speed of injection of the imbibition agent is maintained at 0.5 m/day when water is injected into the well, and during the water injection, the water injection amount is the accumulated water injection amount for one throughout period calculated when the pressure retention level rises from the low level before throughout to the same pressure as the original formation pressure.
And S4, controlling the time for carrying out first soaking to be 10 hours, and controlling the soaking time to be 5 days in the handling process of the oil reservoir horizontal well.
In the step A, the infiltration absorption container and the constant temperature box are not less than two groups, the temperature in the constant temperature box is controlled on the stratum temperature surface, the monitoring equipment comprises a 360-degree dead-angle-free monitoring camera and a monitoring display screen connected with the camera, and the monitoring display screen is arranged outside the constant temperature box.
And C, when the temperature in the constant temperature box is adjusted, increasing +/-0.5 ℃ every half hour, and when the pressure is adjusted, increasing +/-0.5 MPa every half hour.
And C, stopping metering when the imbibition solution at the graduated scale is not changed within 2 hours.
Example 2
In S1, the huff-puff well and the oil production well are arranged at intervals, and in S2, the oil well subjected to volume fracturing transformation has average fracturing construction displacement>8m 3 Min, average frac interval 85m, and stopping water injection when pressure is maintained at 100% of the level while adjusting the pressure around the well.
In S3 and S4, the average speed of water injection is maintained at 1.2 m/day and the average speed of injection of the imbibition agent is maintained at 1.1 m/day when water is injected into the well, and during the water injection, the water injection amount is the accumulated water injection amount for one throughout period calculated when the pressure retention level rises from the low level before throughout to the same pressure as the original formation pressure.
And S4, controlling the soaking time for the first time to be 18 hours, wherein the soaking time is 15 days in the oil reservoir horizontal well handling process.
In the step A, the infiltration absorption container and the constant temperature box are not less than two groups, the temperature in the constant temperature box is controlled on the stratum temperature surface, the monitoring equipment comprises a 360-degree dead-angle-free monitoring camera and a monitoring display screen connected with the camera, and the monitoring display screen is arranged outside the constant temperature box.
And step C, when the temperature in the constant temperature box is adjusted, the plus or minus 0.5 ℃ is added every half hour, and when the pressure is adjusted, the plus or minus 0.5MPa is added every half hour.
And C, stopping metering when the imbibition solution at the graduated scale is not changed within 2 hours.
Example 3
In S1, the huff-puff wells and the oil production wells are arranged at intervals, and in S2, the average fracturing construction displacement of the oil wells subjected to volume fracturing transformation>10m 3 Min, mean frac interval 95m, and stop flooding when pressure is maintained 100% of the level while adjusting the pressure around the well.
In S3 and S4, the average speed of water injection is maintained at 2 m/day and the average speed of the imbibition agent is injected at 1.8 m/day when water is injected into the well, and the water injection amount is the accumulated water injection amount of one throughout period, which is calculated when the pressure maintaining level is increased from the low level before throughout to the same pressure as the original formation pressure during the water injection process.
And S4, controlling the time for carrying out first soaking to be 25 hours, and in the process of handling the oil reservoir horizontal well, soaking for 25 days.
In the step A, the infiltration absorption container and the constant temperature box are not less than two groups, the temperature in the constant temperature box is controlled on the stratum temperature surface, the monitoring equipment comprises a 360-degree dead-angle-free monitoring camera and a monitoring display screen connected with the camera, and the monitoring display screen is arranged outside the constant temperature box.
And C, when the temperature in the constant temperature box is adjusted, increasing +/-0.5 ℃ every half hour, and when the pressure is adjusted, increasing +/-0.5 MPa every half hour.
And C, stopping metering when the imbibition solution at the graduated scale is not changed within 2 hours.
From the results obtained in comparative experiments 1 to 3, it was found that the average fracturing construction displacement was the same as that in example 2>8m 3 And/min, the average interval of the fracturing sections is 85m, the average speed of water injection is maintained at 1.2 m/day, and when the average speed of the injection of the imbibition agent is 1.1 m/day, the imbibition oil recovery effect is better.
Finally, it should be noted that: while the invention has been described in detail with reference to the foregoing description, it will be apparent to one skilled in the art that various changes in the form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. The imbibition oil production method suitable for the low-permeability reservoir is characterized by comprising the following steps of:
s1, firstly, arranging a horizontal well in a low-permeability area for exploiting an oil reservoir, wherein the horizontal well comprises a huff-puff well and an oil production well, and the huff-puff well and the oil production well are arranged side by side;
s2, performing volume fracturing reservoir transformation on the huff-puff well and the oil production well, adjusting the pressure of the huff-puff well and the oil production well, and improving the formation pressure around the huff-puff well;
s3, injecting water into the oil production well and the huff-puff well, and stopping injecting water when the pressure at the end of a water injection period is equal to the pressure of the original stratum;
and S4, injecting an imbibition agent into the stratum after water injection is finished, closing the well after the injection is finished, starting an oil reservoir huff-and-puff process, entering soaking, opening the well for water injection again after the soaking is finished, enabling the pressure of the huff-and-puff bottom hole to reach the preset pressure and be less than the stratum saturation pressure, starting imbibition oil production, continuing water injection and soaking when the pressure is less than the preset pressure, and continuing for 3-5 times to finish the whole imbibition oil production.
2. The imbibition oil recovery method suitable for the low-permeability reservoir of claim 1, characterized in that: in S1, the huff-puff wells and the oil production wells are arranged at intervals, and in S2, the average fracturing construction displacement of the oil wells subjected to volume fracturing transformation>5m 3 And/min, the average interval of the fracturing sections is 75-95 m, and when the pressure around the well is regulated, the water injection is stopped when the pressure is kept at 100 percent of the horizontal level.
3. The imbibition oil recovery method suitable for the low-permeability reservoir of claim 1, characterized in that: and S3 and S4, when water is injected into the well, the average speed of the injected water is maintained at 0.2-2 m/day, the average speed of the injected imbibition agent is 0.5-1.8 m/day, and in the water injection process, the water injection quantity is the accumulated water injection quantity of one throughout period, wherein the accumulated water injection quantity is calculated when the pressure maintaining level is increased from the low level before throughout to the same pressure as the original stratum pressure.
4. The imbibition oil recovery method suitable for the low-permeability reservoir of claim 1, characterized in that: and S4, controlling the time for carrying out first soaking to be 10-25 hours, and controlling the soaking time to be 5-25 days in the handling process of the oil reservoir horizontal well.
5. A laboratory simulation method suitable for a low-permeability reservoir is characterized by comprising the following steps:
a, putting a rock core into a seepage container, and then putting the seepage container into a constant temperature box with an observation window and monitoring equipment;
b, attaching and fixing the graduated scale to the inner wall of the infiltration container, filling the infiltration container with the infiltration medium, and reading the primary mark of the infiltration medium on the graduated scale after the infiltration medium is completely filled;
c, one group adjusts the temperature in the thermostat during imbibition and keeps the pressure unchanged, and the other group adjusts the pressure in the thermostat during imbibition through a pressure pump and keeps the temperature unchanged, records the marks of the imbibition medium on the graduated scale under different pressures and different temperatures, and stops metering until the imbibition medium is stable and unchanged;
and D, respectively taking the metering result and the time as X-axis and Y-axis fluctuation curves of data, and determining the temperature and the pressure when the imbibition recovery rate is highest according to the fluctuation curves.
6. The laboratory simulation method for a low-permeability reservoir of claim 5, wherein: in the step A, the infiltration absorption container and the constant temperature box are not less than two groups, the temperature in the constant temperature box is controlled on the stratum temperature surface, the monitoring equipment comprises a 360-degree dead-angle-free monitoring camera and a monitoring display screen connected with the camera, and the monitoring display screen is arranged outside the constant temperature box.
7. The laboratory simulation method for a low-permeability reservoir of claim 6, wherein: and C, when the temperature in the constant temperature box is adjusted, increasing +/-0.5 ℃ every half hour, and when the pressure is adjusted, increasing +/-0.5 MPa every half hour.
8. The laboratory simulation method for a low-permeability reservoir of claim 6, wherein: and C, stopping metering when the imbibition solution at the graduated scale is not changed within 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673799.0A CN113250662B (en) | 2021-06-17 | 2021-06-17 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673799.0A CN113250662B (en) | 2021-06-17 | 2021-06-17 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113250662A CN113250662A (en) | 2021-08-13 |
| CN113250662B true CN113250662B (en) | 2023-01-06 |
Family
ID=77188486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110673799.0A Active CN113250662B (en) | 2021-06-17 | 2021-06-17 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113250662B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114139470B (en) * | 2021-11-29 | 2024-06-04 | 长江大学 | Method for calculating gas relative permeability of tight sandstone gas reservoir |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888630A (en) * | 2016-04-29 | 2016-08-24 | 中国石油天然气股份有限公司 | Method for improving recovery efficiency by huff-puff oil recovery of tight oil fracturing horizontal well |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015017190A2 (en) * | 2013-08-01 | 2015-02-05 | Conocophillips Company | Dynamic in-situ measurement of reservoir wettability |
| CN104806214B (en) * | 2015-03-23 | 2017-06-13 | 中国石油天然气股份有限公司 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
| CN106370582B (en) * | 2016-10-28 | 2023-03-17 | 陕西延长石油(集团)有限责任公司研究院 | Experimental device for simulating dynamic imbibition of fractured ultra-low permeability reservoir and application of experimental device |
| CN206177773U (en) * | 2016-10-28 | 2017-05-17 | 陕西延长石油(集团)有限责任公司研究院 | Experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature |
| US10144864B1 (en) * | 2017-05-09 | 2018-12-04 | University Of Wyoming | Methods for determining an optimal surfactant structure for oil recovery |
| CN108843291B (en) * | 2017-11-28 | 2021-11-30 | 中国石油天然气股份有限公司 | Exploitation method and device of low-pressure tight oil reservoir |
| CN209460105U (en) * | 2019-01-23 | 2019-10-01 | 西南石油大学 | A kind of visualization based on nuclear magnetic resonance rock core imbibition experimental provision with pressure |
| CN111521543B (en) * | 2020-06-10 | 2021-09-07 | 东北石油大学 | Compact reservoir core static pressurization visual imbibition experimental method |
-
2021
- 2021-06-17 CN CN202110673799.0A patent/CN113250662B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888630A (en) * | 2016-04-29 | 2016-08-24 | 中国石油天然气股份有限公司 | Method for improving recovery efficiency by huff-puff oil recovery of tight oil fracturing horizontal well |
Non-Patent Citations (2)
| Title |
|---|
| 松辽盆地北部致密砂岩高温高压吞吐渗吸实验;李斌会等;《特种油气藏》;20171212(第01期);全文 * |
| 致密油藏渗吸采油影响因素及作用机理;王敉邦等;《大庆石油地质与开发》;20180911(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113250662A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108830020B (en) | A method of the micro- Fracturing Technology crack extension of simulation offshore oilfield | |
| CN109883917B (en) | Experimental device and method for simulating static and dynamic seepage and oil drainage of matrix-crack | |
| CN108708693B (en) | A kind of closing fault block oil reservoir nitrogen compound throughput method | |
| CN107255027B (en) | Compound modification method for carbonate rock reservoir | |
| Willhite et al. | Mechanisms causing disproportionate permeability reduction in porous media treated with chromium acetate/HPAM gels | |
| CN106837274B (en) | Method for injecting oil displacement agent into oil layer by fracturing to improve recovery ratio | |
| CN105041288A (en) | Carbonate oil-gas reservoir fracture steering acid fracturing method | |
| CN104675371B (en) | It is a kind of it is poly- drive plus subsequent waterflooding after alternately inject gel and polymer solution complex oil displacing experimental method | |
| CN113250662B (en) | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method | |
| CN106634922A (en) | Self generated gas foam oil-displacing agent liquid and application and injection increase and yield increase method thereof | |
| CN108533238B (en) | Method for plugging dominant seepage channel after polymer flooding | |
| CN106909757B (en) | Method for determining reasonable pressure level of low-permeability oil reservoir advanced water injection stratum | |
| CN101915079B (en) | Integrated de-plugging yield increasing process | |
| CN104481475B (en) | Oil well carbon dioxide carbonated water is handled up method for increasing | |
| CN102418507A (en) | Low-cost deep blockage removing method for water injection well | |
| CN104675370B (en) | Combinational flooding testing method capable of implementing gel injection and polymer solution injection alternately after water flooding | |
| CN104389566A (en) | Method for judging gas fleeing time | |
| RU2474676C1 (en) | Multiformation oil deposit development method | |
| CN106958437A (en) | A kind of wellfracturing improves recovery ratio new method | |
| RU2203405C1 (en) | Method of development of oil field | |
| CN108520143A (en) | A kind of gas injection development oil reservoir gas-oil ratio climbing characterizing method | |
| CN105735952B (en) | A kind of method that medium to high permeable oil reservoir improves oil recovery factor | |
| RU2515675C1 (en) | Isolation method of water influx to oil producer | |
| US3460622A (en) | Method of increasing injectivity of fluids into formations | |
| US3131760A (en) | Gas recovery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |