CN105822276A - Inter-crack space synchronous water injection-oil extraction method of multistage fracturing horizontal well - Google Patents
Inter-crack space synchronous water injection-oil extraction method of multistage fracturing horizontal well Download PDFInfo
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- CN105822276A CN105822276A CN201610253550.3A CN201610253550A CN105822276A CN 105822276 A CN105822276 A CN 105822276A CN 201610253550 A CN201610253550 A CN 201610253550A CN 105822276 A CN105822276 A CN 105822276A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000605 extraction Methods 0.000 title claims abstract description 41
- 230000001360 synchronised effect Effects 0.000 title abstract 2
- 239000003921 oil Substances 0.000 claims abstract description 124
- 238000002347 injection Methods 0.000 claims abstract description 85
- 239000007924 injection Substances 0.000 claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 239000010779 crude oil Substances 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 230000002706 hydrostatic effect Effects 0.000 claims description 8
- 238000012163 sequencing technique Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 15
- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000000926 separation method Methods 0.000 abstract 2
- 238000011084 recovery Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
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- 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
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- 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
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- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to an inter-crack space synchronous water injection-oil extraction method of a multistage fracturing horizontal well. The method comprises the following steps: forming multiple cracks of the staged fracturing horizontal well; extracting with natural energy in the initial production stage until bottom hole pressure is reduced to bubble point pressure; taking out an oil pipe; mounting an injection-extraction separation device on each odd-level crack, mounting an injection allocation valve on each even-level crack, forming jet holes, corresponding to the odd-level cracks, in the oil pipe, and putting the oil pipe to the home position; closing a well mouth oil extraction valve, starting the injection allocation valves, and injecting water into the annular space of an oil jacket, wherein the injected water flows through a guide pipe and enters the even-level cracks; and opening the well mouth oil extraction valve, wherein crude oil is produced from the odd-level cracks and enters an annular space formed by the guide pipe and a sleeve and the oil pipe and then is extracted through the oil pipe while water injection into the even-level cracks is continuously kept. Each injection-extraction separation device comprises a guide pipe and a packer. The method is simple in technology, can realize uniform displacement and has relatively high practical application value.
Description
Technical field
The invention belongs to Reservoir Development technical field, be specifically related to interval water injection oil extraction method simultaneously between a kind of multistage fracturing horizontal well seam.
Background technology
Multistage fracturing horizontal well is to improve hypotonic, the effective technology of compact oil reservoir yield.Owing to hypotonic, ultralow permeable reservoir strata pressure after utilizing natural energy to exploit a period of time are generally reduced comparatively fast, it is therefore desirable to its supplementary energy, to improve the development effectiveness of this type of oil reservoir.The conventional well pattern form supplementing energy is straight well water filling and multistage fracturing horizontal well production, and this mode needs to arrange straight well around horizontal well, in addition it is also necessary to consider the factors such as horizontal section length, crack quantity, fracture interval and well pattern well type.There is a lot of defect in this mode, the most relatively costly；On the other hand injecting the water capacity easily to advance by leaps and bounds along crack, cause uneven displacement, once water enters crack, yield declines rapidly.At present, some scholars have been developed between multistage fracturing horizontal well seam being spaced water flood recovery technology, i.e. use the mode that first water filling is recovered the oil again, but technology operation is many, efficiency is low, cost is high for these, and yield need to improve further.Therefore, it is badly in need of developing a kind of novel multistage fracturing horizontal well production technology, to solve the defect that prior art exists.
Application publication number is that the patent of invention of CN105114048A discloses a kind of staged fracturing of horizontal well single-well injection-production oil production method, the method passes through staged fracturing of horizontal well, the a plurality of fracturing fracture being perpendicular to horizontal wellbore is produced at oil reservoir different parts, choose wherein a crack as fluid infusion channel, the crack of both sides adjacent thereto is as crude oil extraction passage, and displacement crude oil is along being positioned at the crack of centre to both sides flow in fracture；Technology is insulated in conjunction with double tube segmentation, in horizontal well, this crack is insulated with adjacent two cracks, fluid injects from intermediate cracking, the crack that displacement crude oil is adjacent from both sides flow to horizontal wellbore, production fluid is along another oil pipe passage output pit shaft, thus forms segmentation single-well injection-production system in same level well.This technical scheme is more complicated, in horizontal well, three cracks can only be carried out water filling and oil recovery every time, after this three crack completes water filling and recovers the oil, other three cracks being adjacent could be carried out water filling and oil recovery, visible production process is many, and production efficiency is low, and this technical scheme can not the total oil production of quantitative assessment and the oil production of every crack in addition.
Summary of the invention
For solving problems of the prior art, the present invention provides interval water injection oil extraction method simultaneously between a kind of multistage fracturing horizontal well seam, comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 3: taking out oil pipe, then the position in each odd level crack is respectively mounted note and adopts separating device, is respectively mounted injection allocation valve in the position in each even level crack；
Step 4: on the oil pipe taken out, perforation is offered in the position corresponding to odd level crack, is then returned to the position before taking out by oil pipe；
Step 5: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 6: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
Interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present invention, it is in same frac water horizontal well, utilize oil pipe, sleeve pipe and oil sets annular space to realize note and adopt isolation technique, water filling from oil sets annular space, inject water through odd level crack location, note is utilized to adopt separating device, injection water is made to enter mozzle, then via injection allocation valve enter two grades, level Four, six grades, the even level cracks such as eight grades, and inject water cannot be introduced into one-level, three grades, Pyatyi, seven grades, the odd level cracks such as nine grades.Crude oil, from the extraction of odd level crack, is introduced in the annular space of mozzle and sleeve pipe and oil pipe formation, subsequently into oil pipe extraction, thus realizes water flood recovery technology simultaneously.It is respectively provided with injection allocation valve, in order to control water injection rate at each even level crack location.The method can make the water injected from even level crack simultaneously to the odd level crack displacement of the both sides being adjacent, and realizes the uniform displacement of reservoir oil, and then improves sweep area, improve oil displacement efficiency on vertical-horizontal pit shaft direction.
Preferably, in step one, fracturing fracture is at least three grades.More preferably nine grades of cracks.
In any of the above-described scheme preferably, in step 3, note is adopted in the oil sets annular space that separating device is arranged on oil pipe corresponding to odd level crack and sleeve pipe formation, and injection allocation valve is arranged on the water injection hole position in even level crack.
In any of the above-described scheme preferably, in step 5, during water filling, monitor strata pressure.
In any of the above-described scheme preferably, when reservoir pressure coefficient is equal to 1, according to balanced flood principle, water injection rate is equal to oil production, and strata pressure recovers to original formation pressure.
In any of the above-described scheme preferably, when reservoir pressure coefficient is less than 1, stratum is low-pressure stratum, and water injection rate is more than oil production, and strata pressure recovers to pressure and hydrostatic pressure, calculates water injection rate according to substance conservation principle.
In any of the above-described scheme preferably, in step 6, to even level crack water injection until strata pressure recovers to original formation pressure or pressure and hydrostatic pressure, open wellhead tree valve.
In any of the above-described scheme preferably, described note is adopted separating device and is included mozzle and packer.
In any of the above-described scheme preferably, described mozzle is arranged between packer I and packer II.
The present invention also provides for interval water injection oil extraction method simultaneously between another kind of multistage fracturing horizontal well seam, comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: be respectively mounted note in the position in each odd level crack and adopt separating device, is respectively mounted injection allocation valve in the position in each even level crack, and on oil pipe, perforation is offered in the position corresponding to odd level crack；
Step 3: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 4: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 5: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
Preferably, described note is adopted separating device and is included mozzle and packer.
In any of the above-described scheme preferably, described mozzle is arranged between packer I and packer II.
Interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present invention, its technique is simple, easy to operate, the method is applied on same water horizontal well, utilizes oil pipe, sleeve pipe and oil sets annular space to realize note and adopts isolation technique, inject water from entrance stratum, even level crack, recovering the oil from the odd level crack of both sides, water filling crack, this method is possible not only to reduce cost, it is also possible to realize uniform displacement, improve yield, there is higher actual application value.
Accompanying drawing explanation
Fig. 1 is according to water flood recovery process schematic while one preferred embodiment of interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present invention；
Fig. 2 is to adopt the structural representation of separating device according to the note of the interval embodiment illustrated in fig. 1 of water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present invention；
Fig. 3 is according to the horizontal segment cross sectional representation of the interval multistage fracturing horizontal well odd level crack correspondence position of the embodiment illustrated in fig. 1 of water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present invention.
Mark explanation in figure: 1-frac water horizontal well, 2-odd level crack, 3-even level crack, 4-oil pipe, 5-sleeve pipe, 6-oil sets annular space, 7-note adopts separating device, 8-injection allocation valve, 9-water injection hole, 71-mozzle, 72-packer, 721-packer I, 722-packer II.
Detailed description of the invention
In order to be further understood that the summary of the invention of the present invention, elaborate the present invention below in conjunction with specific embodiment.
Embodiment one:
Being spaced an embodiment of water injection oil extraction method simultaneously according to the multistage fracturing horizontal well of the present invention between stitching, it comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 3: taking out oil pipe, then the position in each odd level crack is respectively mounted note and adopts separating device, is respectively mounted injection allocation valve in the position in each even level crack；
Step 4: on the oil pipe taken out, perforation is offered in the position corresponding to odd level crack, is then returned to the position before taking out by oil pipe；
Step 5: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 6: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
As shown in Figure 1, interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present embodiment, it is in same frac water horizontal well 1, utilize oil pipe 4, sleeve pipe 5 and oil sets annular space 6 to realize note and adopt isolation technique, water filling from oil sets annular space 6, inject water through position, odd level crack 2, note is utilized to adopt separating device 7, injection water is made to enter mozzle 71, then via injection allocation valve 8 enter two grades, level Four, six grades, the even level cracks 3 such as eight grades, and inject water cannot be introduced into one-level, three grades, Pyatyi, seven grades, the odd level cracks 2 such as nine grades.Crude oil, from odd level crack 2 extraction, is introduced in the annular space of mozzle 71 and sleeve pipe 5 and oil pipe 4 formation, subsequently into oil pipe 4 extraction, thus realizes water flood recovery technology simultaneously.It is respectively provided with injection allocation valve 8, in order to control water injection rate in position, each even level crack 3.The method can make the water injected from even level crack 3 simultaneously to odd level crack 2 displacement of the both sides being adjacent, and realizes the uniform displacement of reservoir oil, and then improves sweep area, improve oil displacement efficiency on vertical-horizontal pit shaft direction.
In step one, fracturing fracture is nine grades.It is followed successively by one-level, two grades, three grades, level Four, Pyatyi, six grades, seven grades, eight grades and nine grades the most from left to right.
In step 3, note is adopted separating device 7 and is arranged in the oil pipe 4 of odd level crack 2 correspondence and the oil sets annular space 6 of sleeve pipe 5 formation, and injection allocation valve 8 is arranged on water injection hole 9 position in even level crack 3.
In step 5, during water filling, monitor strata pressure.When reservoir pressure coefficient is equal to 1, according to balanced flood principle, water injection rate is equal to oil production, and strata pressure recovers to original formation pressure；When reservoir pressure coefficient is less than 1, stratum is low-pressure stratum, and water injection rate is more than oil production, and strata pressure recovers to pressure and hydrostatic pressure, calculates water injection rate according to substance conservation principle.
In step 6, to even level crack water injection until strata pressure recovers to original formation pressure or pressure and hydrostatic pressure, open wellhead tree valve.
As shown in Figures 2 and 3, described note is adopted separating device 7 and is included mozzle 71 and packer 72.Described mozzle 71 is arranged between packer I 721 and packer II 722.
Interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam of the present embodiment, its technique is simple, easy to operate, the method is applied on same water horizontal well, utilizes oil pipe, sleeve pipe and oil sets annular space to realize note and adopts isolation technique, inject water from entrance stratum, even level crack, recovering the oil from the odd level crack of both sides, water filling crack, this method is possible not only to reduce cost, it is also possible to realize uniform displacement, improve yield, there is higher actual application value.
Embodiment two:
Being spaced another embodiment of water injection oil extraction method simultaneously according to the multistage fracturing horizontal well of the present invention between stitching, it comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: be respectively mounted note in the position in each odd level crack and adopt separating device, is respectively mounted injection allocation valve in the position in each even level crack, and on oil pipe, perforation is offered in the position corresponding to odd level crack；
Step 3: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 4: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 5: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
In step one, fracturing fracture is nine grades, is followed successively by one-level, two grades, three grades, level Four, Pyatyi, six grades, seven grades, eight grades and nine grades from left to right.
In step 2, note is adopted in the oil sets annular space that separating device is arranged on oil pipe corresponding to odd level crack and sleeve pipe formation, and injection allocation valve is arranged on the water injection hole position in even level crack.
In step 4, during water filling, monitor strata pressure.When reservoir pressure coefficient is equal to 1, according to balanced flood principle, water injection rate is equal to oil production, and strata pressure recovers to original formation pressure；When reservoir pressure coefficient is less than 1, stratum is low-pressure stratum, and water injection rate is more than oil production, and strata pressure recovers to pressure and hydrostatic pressure, calculates water injection rate according to substance conservation principle.
In step 5, to even level crack water injection until strata pressure recovers to original formation pressure or pressure and hydrostatic pressure, open wellhead tree valve.
Described note is adopted separating device and is included mozzle and packer.Described mozzle is arranged between packer I and packer II.
While the present embodiment, the principle of water flood recovery technology, beneficial effect etc. are all identical with embodiment one.
Those skilled in the art are understood that, between the multistage fracturing horizontal well seam of the present invention, interval simultaneously water injection oil extraction method includes the combination in any of each several part shown by the summary of the invention of the invention described above description and detailed description of the invention part and accompanying drawing, not have each schemes by these combination compositions to describe one by one as space is limited and for making description simple and clear.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (10)
1. an interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam, comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 3: taking out oil pipe, then the position in each odd level crack is respectively mounted note and adopts separating device, is respectively mounted injection allocation valve in the position in each even level crack；
Step 4: on the oil pipe taken out, perforation is offered in the position corresponding to odd level crack, is then returned to the position before taking out by oil pipe；
Step 5: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 6: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
2. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 1, it is characterised in that: in step one, fracturing fracture is at least three grades.
3. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 1, it is characterized in that: in step 3, note is adopted in the oil sets annular space that separating device is arranged on oil pipe corresponding to odd level crack and sleeve pipe formation, and injection allocation valve is arranged on the water injection hole position in even level crack.
4. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 1, it is characterised in that: in step 5, during water filling, monitor strata pressure.
5. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 4, it is characterised in that: when reservoir pressure coefficient is equal to 1, according to balanced flood principle, water injection rate is equal to oil production, and strata pressure recovers to original formation pressure.
6. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 4, it is characterized in that: when reservoir pressure coefficient is less than 1, stratum is low-pressure stratum, and water injection rate is more than oil production, strata pressure recovers to pressure and hydrostatic pressure, calculates water injection rate according to substance conservation principle.
7. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 1, it is characterised in that: in step 6, to even level crack water injection until strata pressure recovers to original formation pressure or pressure and hydrostatic pressure, open wellhead tree valve.
8. interval water injection oil extraction method simultaneously between the multistage fracturing horizontal well seam as according to any one of claim 1-7, it is characterised in that: described note is adopted separating device and is included mozzle and packer.
9. interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam as claimed in claim 8, it is characterised in that: described mozzle is arranged between packer I and packer II.
10. an interval water injection oil extraction method simultaneously between multistage fracturing horizontal well seam, comprises the following steps according to sequencing:
Step one: horizontal well pit shaft is carried out staged fracturing, forms a plurality of fracturing fracture being perpendicular to horizontal well pit shaft；
Step 2: be respectively mounted note in the position in each odd level crack and adopt separating device, is respectively mounted injection allocation valve in the position in each even level crack, and on oil pipe, perforation is offered in the position corresponding to odd level crack；
Step 3: at the initial stage of production, utilize natural energy to exploit a period of time, until bottom pressure drops to bubble point pressure；
Step 4: closedown wellhead tree valve, opens injection allocation valve, simultaneously water filling in the oil sets annular space that oil pipe and sleeve pipe are formed, and injection water flows through note and adopts the mozzle of separating device and enter even level crack；
Step 5: open wellhead tree valve, crude oil is from odd level crack output and enters note and adopts in the annular space that the mozzle of separating device and sleeve pipe and oil pipe are formed, and then enters oil pipe extraction by the perforation on oil pipe, now continues to keep to even level crack water injection.
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| CN106761606A (en) * | 2017-02-14 | 2017-05-31 | 中国石油大学(北京) | The asynchronous note CO of different well of symmetrical expression cloth seam2Oil production method |
| CN106761612A (en) * | 2017-02-14 | 2017-05-31 | 中国石油大学(北京) | The asynchronous water injection oil extraction method of double different wells of pressure break horizontal well of zip mode cloth seam |
| CN106837290A (en) * | 2017-02-14 | 2017-06-13 | 中国石油大学(北京) | The asynchronous note CO of the different well of packet of symmetrical expression cloth seam2Oil production method |
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| CN106761606A (en) * | 2017-02-14 | 2017-05-31 | 中国石油大学(北京) | The asynchronous note CO of different well of symmetrical expression cloth seam2Oil production method |
| CN106761612A (en) * | 2017-02-14 | 2017-05-31 | 中国石油大学(北京) | The asynchronous water injection oil extraction method of double different wells of pressure break horizontal well of zip mode cloth seam |
| CN106837290A (en) * | 2017-02-14 | 2017-06-13 | 中国石油大学(北京) | The asynchronous note CO of the different well of packet of symmetrical expression cloth seam2Oil production method |
| CN106837290B (en) * | 2017-02-14 | 2019-03-15 | 中国石油大学(北京) | The asynchronous note CO of the different well of grouping of symmetrical cloth seam2Oil production method |
| CN106761612B (en) * | 2017-02-14 | 2019-03-15 | 中国石油大学(北京) | The asynchronous water injection oil extraction method of double different wells of pressure break horizontal well of zip mode cloth seam |
| CN106761606B (en) * | 2017-02-14 | 2019-03-15 | 中国石油大学(北京) | The asynchronous note CO of different well of symmetrical cloth seam2Oil production method |
| CN109630082A (en) * | 2018-10-19 | 2019-04-16 | 中国石油大学(北京) | Individual well note adopts integrated seam net development approach in a kind of oil field development |
| CN109653715A (en) * | 2018-12-29 | 2019-04-19 | 中国石油天然气股份有限公司 | Horizontal well section staggered displacement and imbibition oil displacement injection-production tubular column and method |
| CN111946310A (en) * | 2020-08-27 | 2020-11-17 | 中国石油天然气股份有限公司 | Self-driving well for self-injection and self-production in same well layer and production method |
| CN112031730A (en) * | 2020-09-15 | 2020-12-04 | 中国石油天然气股份有限公司 | Mechanical horizontal well inter-fracture alternate injection-production oil extraction process |
| CN112983371A (en) * | 2021-02-10 | 2021-06-18 | 中国石油大学(北京) | Method for extracting oil shale by coupling thermal fluid and thermal fluid coupling catalyst between same well seams of horizontal well |
| CN112983358A (en) * | 2021-02-10 | 2021-06-18 | 中国石油大学(北京) | Method for exploiting coal bed gas by injecting carbon dioxide between same well seams of horizontal well |
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