CN103161434A - Mining method for low permeability reservoir of shale gas and the like - Google Patents
Mining method for low permeability reservoir of shale gas and the like Download PDFInfo
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Abstract
The invention provides a mining method for low permeability reservoir of shale gas and the like. The mining method comprises the steps of arranging a main shaft, forming at least three auxiliary holes in the storage layer on the periphery of the main shaft, performing storage layer transformation in the holes mainly through energizing blasting so as to increase cracks and enable the cracks to be communicated with the main shaft; and maintaining the holes and sealing the shaft after the holes are transformed, and performing production mining and drainage through the main shaft. Completion methods of the holes can be classified into a branch locating shaft, a cluster wall or combination of the branch locating shaft and the cluster wall. The distance between the holes and between the holes and the main shaft is 10-2000m, the diameters of the holes are not smaller than 150mm. The mining method for the low permeability reservoir of the shale gas and the like solves the technical problems that a horizontal shaft must be drilled, multistage fracturing and the like must be performed when the low permeability reservoir is developed, a novel shaft type which is simple to construct, small in occupied area and wide in application range, has low requirements for technical equipment and does not depend on a water source and the novel method are applied to industrialization of low permeability oil gas.
Description
Technical field
The invention belongs to the oil-gas reservoir production technique, relate to a kind of low-permeability oil gas reservoir exploitation method.
Background technology
The energy is the basis of social and economic development, is the mankind's life and production factors.The impact of nuclear power crisis after Japan's violent earthquake has further aggravated attention and the dependence of the whole world to traditional energy.A distinguishing feature of the low-permeability oil gas reservoirs such as shale gas is exactly low-permeability, is difficult to adopt the exploitation method of conventional gas and oil well to produce row and adopts.The Low Permeability Oil/gas resource of China is very abundant, and only shale gas resource area just reaches 3,000,000 square kilometres, has huge resource potential and exploration and development distant view.Their develop not only will improve energy structure in China, alleviate the demand pressure of petroleum resources, realize the diversification of energy resource supply, change to the clean energy resource economic model, but also can further ensure national energy security.
Yet the exploitation of the low-permeability oil gas reservoirs such as shale gas generally all belongs to the technology of forefront in gas industry.Take shale gas as example, it is inner that it is bound in shale (hydrocarbon source rock) fine and close, that almost there is no hole and crack, must form gas passage by the artificial crack of making, and allows gas flow into pit shaft, enters acquisition system, enters at last gathering line.This technical difficulty therebetween makes the exploitation of shale gas always unattainable.Even at present, also only have in the world minority north america (be mainly the U.S., more than 50,000 mouthful of shale gas producing well arranged) to realize the commercialization exploitation of shale gas.The shale gas production technique of the U.S., the synchronous fracturing technique that mainly contains horizontal well+multistage pressure break, riverfrac treatment, refracturing and occur in recent years.Its core technology is exactly horizontal well technology and multistage fracturing technique.China also is in the exploratory stage at present, and the prospect pit that the less than of only constructing is hundred mouthfuls is in " blank " on production development.
In conventional oil reservoir exploitation, China has adopted horizontal drilling and fracturing, but for how being applied to the rammell, especially the fracturing technique more than tens sections also achieves no breakthrough.The heaven easily enters ground difficult.The risk of horizontal well technology own is higher.In the long net horizontal section drilling process in rammell, hole collapse is the important technology difficult problem of restriction horizontal segment drilling well, the prospect pit horizontal segment that China has constructed all meets with drilling fluid leakage without exception, undergauge, suppress pump, stick with paste brill, the engineering accidents such as bit freezing, bury drills, cause very worthy horizontal well drilling tool to bury in underground if process bad meeting.Even if the technology leading U.S. relative to experience also meets setbacks for many times in the shale gas exploitation in recent years.Exxon Mobil Corporation announces at the beginning of 2012 2 months that the said firm is very undesirable in two mouthfuls of shale gas exploratory well aerogenesis situations of Poland, fails to reach business exploitation standard.And before this in Hungary, a bite shale gas exploratory well of the said firm is also almost that water yields because of what exploit out entirely, causes the investment over 75,000,000 dollars to come to naught.Adopt maturation process, simple device, reduce engineering risk and just mean and reduce costs.
Fracturing technique be mainly by ground installation to underground conveying fracturing fluid to reach the purpose of broken reservoir.Can feed water protection of resources, water pollution and the environmental protection of this mode brings huge challenge.The U.S. has 32 states to adopt hydrofracturing method exploitation shale gas at present.The water supply volume of U.S. Ba Naite area water horizontal well is at least 1.37 ten thousand tons, and increases along with the increase of well depth.Meanwhile, on average only have 10% pressure break once to play a role, some horizontal wells need pressure break more than ten time, and a bite shale gas well finally needs more than 20 ten thousand tons, water.Huge water supply volume like this, what bring is the series of problems such as water source and waste water recovery.Be used for the auxiliary chemical substance of destroying reservoir owing to having added in water, there is the possibility that is back to the earth's surface in the water that permeates the ground, if defence measure is not in place, and can contaminated land and underground water source.In addition, can produce methane gas and leak in horizontal well drilling, completion and fracturing process, contaminated environment.The denser state of some populations of the U.S., fracturing technique is exploited greenbelt shale gas with regard to no thoroughfare by legal means as the New York, avoids environmental disruption.Several small-scale shale gas projects are all because existing environment hidden danger halted, as French parliament legislation forbidding hydrofracturing method exploitation shale gas in Europe.China's quantity of landed property and water resource per capita far is inferior to the U.S., in a lot of areas, water resource critical shortage and quality low, long-term excessive exploitation will make Eco-environmental Issues in China more fragile.Data shows, shale gas well site area is tens times of conventional gas, and well spacing density is 10 times of conventional gas, and drilling hole number is the hundreds of times of conventional gas.Stand fast in China under the prerequisite of 1,800,000,000 mu of arable land red lines, reducing drilling hole number must contradict with the shale gas exploitation.
Itself belongs to major works pressure break, and risk, cost are high.Shale gas mining area in the U.S., the water of ten hundreds of cubic metres is transported to the pressure break well site by truck, and take the Johnson County of the U.S. as example, a bite fractured horizontal well need to be equipped with 100 hauling operation persons.In addition, in the resonable production practices of touching upon of fracturing technique, also there are some defectives, disturb between meeting as existence and can cause that take water as main fracturing fluid some mud shale expansions stop up hole; The propagation direction in pressure break crack is subjected to stratum main stress bar guiding obviously, is ribbon, and main stress bar vertical direction crack is less, and distributed pole is inhomogeneous; The pressure break noise of high-decibel can affect the health of surrounding resident, near the urban conservation area, may cause migrating of some animals on the brink of extinction.
Develop emerging unconventional energy resource, need advanced technology.GPRS advanced person's technology wherein a kind of mode is exactly to cooperate with the offshore company, introduces, digests their technology.This mode also exists foreign prior art to the adaptability problem of Chinese Complicated Geologic Condition except in some drawbacks that exist aspect energy outsourcing.Studies show that, the geologic setting that China's shale gas forms is more complicated than north America region, time tectonic movement stack of many phases, transformation, the reservoir buried depth is large, tomography, fold are grown far beyond the U.S., can U.S.'s prior art be applicable to China and await checking, and the prospect pit that China has completed at present shows that also gas efficiency is relatively poor.
Chinese patent 201110064277.7 discloses a kind of method and device that increases the shale gas recovery ratio by the blast mode, the restriction of protected pit shaft and equipment, and dose can not be too large, therefore the explosion influence basin is limited, available reserves are less.
Summary of the invention
The purpose of this invention is to provide a kind of brand-new and construction is simple, technical equipment is required low, the low-permeability oil gas reservoir exploitation methods such as shale gas that risk is low, pollute less, consume less, take up an area less, cost is low, efficient is high.
The low-permeability oil gas reservoir exploitation methods such as shale gas of the present invention; Comprise: a bite main shaft is set, sets up to be no less than the auxiliary cave of three in the reservoir around main shaft, mainly carry out reservoir reconstruction by explosion in described cave; Thereby the increase crack, and crack and main shaft are communicated with each other; Keep cave and shut-in well after the transformation of auxiliary cave, main shaft is produced row and is adopted.
In addition, can be straight well or inclined shaft as the completion mode of optimizing described main shaft.The completion mode in described auxiliary cave can be branch directional well or cluster well or is both combination.Horizontal range between described auxiliary cave, and the horizontal range between auxiliary cave and main shaft is 10～2000 meters, auxiliary cave diameter is not less than 150 millimeters.Reservation cave and shut-in well after described auxiliary cave transformation is completed.Described reservoir reconstruction also comprises the monitoring and evaluation in crack.Described auxiliary cave also comprises design and the design of auxiliary cave well shut-in well of cave spacing, cave horizontal movement, Cave distribution pattern, cave diameter, cave number, explosion dose.
The blasting method of the low-permeability oil gas reservoir exploitation methods such as shale gas of the present invention is mainly CUMULATIVE BLASTING, and the cumulative direction is the reservoir bearing of trend.Adopt from bottom to top mode to carry out successively as optimizing described CUMULATIVE BLASTING for the thick-layer reservoir.Described CUMULATIVE BLASTING, after first completing bottom reservoir CUMULATIVE BLASTING and shut-in well then is completed the top reservoir and is made cave and CUMULATIVE BLASTING for many reservoirs.Described CUMULATIVE BLASTING is carried out twice or twice above repetition explosion for the hard reservoir that is difficult for collapsing.Described reservoir reconstruction also comprises explosion in high enegry gas fracturing, layer, fracturing, acid fracturing.Described CUMULATIVE BLASTING can be undertaken by oil pipe or logging cable.
Completing main technique of the present invention has: straight well and deviated directional drilling design and drilling well, construction cave, explosion, " bridge formation " sealing of hole, monitoring fractures and assessment, well cementation perforation and pressure break etc.Straight well, deviated directional drilling design and drilling well are existing ripe drilling technology; Build the cave, explosion, " bridge formation " sealing of hole, monitoring fractures and assessment, well cementation perforation and straight well and Deviated Well Fracturing etc. are prior art.Wherein, the technological parameter of straight well and deviated directional drilling and casing programme and existing conventional gas and oil well are basic identical, and difference is that deviated directional drilling major function of the present invention is reservoir reconstruction, and generally the row of being not used in adopts; Auxiliary cave diameter is not less than 150 millimeters; Cave spacing (distance between adjacent cave) and cave horizontal movement (cave is apart from the distance of main shaft) are between 10～2000 meters; The cave is furnished with network of triangle, rectangle net, rhombus net, circular net, oval net and and other irregular polygon etc.Different zones should be optimized according to geology and reservoir situation, determines best cave diameter, cave horizontal movement, cave spacing, target area scope, explosion dose and cave branch pattern, number and the design of auxiliary cave well shut-in well.CUMULATIVE BLASTING: the crack bearing of trend that explosion is produced is parallel to the reservoir bearing of trend.Can adopt solid or liquid explosives, and carry out the repetition explosion, or coordinate explosion in high enegry gas fracturing and layer.Straight well or Deviated Well Fracturing determine whether needs according to making cave and demolition effect, and suitable pressure break scale, fracturing material etc.This pressure break is optional, be a kind of supplementary means, and the pressure break scale is also much smaller than fractured horizontal well.
Outstanding substantive distinguishing features and remarkable result that the present invention has are as follows:
1, engineering construction risk of the present invention is low.Owing to adopting existing maturation process, conventional equipment can reduce engineering risk greatly.Even transform unsuccessfully in the cave, somewhere, can not affect other cave correctional effect yet, more can not cause full well to scrap.
2, the present invention overcomes technology prejudice.Its adopts multiple spot to build the cave, and cave cohesive energy explosion can keep continuity and the validity of Fracture System, and then enlarges the reconstruction scope and row adopts area; Repeatedly repeat CUMULATIVE BLASTING, can make cranny development more comprehensively, more extensive, avoided one-sidedness and the locality in pressure break crack; The exploitation low-permeability oil gas reservoir prior art prejudice such as horizontal well, multistage pressure break of must fetching water have been overcome; Due to less employing fracturing, avoided some rock stratum water-swellables to stop up the gas channel problem; Because reservoir reconstruction is to carry out in the scope of distance main borehole certain distance, can avoid cave in impact row of main shaft to adopt, can protect main borehole, reduce the main shaft maintenance.
3, cost is low.Individual well of the present invention effectively row to adopt area large, can reduce production wellbores, thereby reduce well site and floor space, reduce well spacing density, reduce preliminary work for spudding (as repair the roads etc.), relocation equipment, surface line etc., also be convenient to final-period management; Be not subjected to the environment influence of topography, can avoid the stratum of geological problem and creep into; Technique is simple, and does not rely in a large number the water source; The explosive cost is low more than the pressure break cost, and efficient.
4, be conducive to environmental protection, improve comprehensive benefit.Well spacing density is low, and floor space is few, repairs the roads few, and is few to the earth's surface environmental disruption; Pressure break small scale pressure break number of times does not even need less, has reduced groundwater pollution; In drilling well and Completion Operations, cause a large amount of natural gas leakings unlike horizontal well multistage pressure break, few to atmosphere pollution.
5, applied range.The present invention is except the permeability of the shale gas reservoir that can be used for improving hyposmosis, thereby improves outside recovery ratio, also can be used for other such as compact sandstone gas, carbonatite gas, basin-centered gas, coal bed gas and low-permeability oil deposit; Can be used for transforming some has completed but productivity ratio is lower or the producing well of produce oil gas not; Can not only significantly improve the recovery ratio of low-permeability oil gas reservoir, also might be transformed into mining resources to some the low-permeability oil gas reservoirs that also can not adopt at present; Not only can be used for the land face, more can be used for waterborne.
Description of drawings
Fig. 1 is the low-permeability oil gas reservoir exploitation method well type schematic diagrames such as shale gas of the present invention.
The specific embodiment
Below in conjunction with embodiment, the present invention is described.
(1) certain shale gas reservoir, 1000 meters of buried depths, 50 meters of thickness.As shown in Figure 1, be well type schematic diagram of the present invention.In described main shaft (1) reservoir on every side, build auxiliary cave (2) by directional well, carry out take CUMULATIVE BLASTING as main reservoir reconstruction manufacture of intraocular crack, the then above stratum of bounded reservoir (10) in cave (2); In the reservoir (10) of certain limit, make cave explosion transformation reservoir (10) by many places around main shaft; Reservoir (10) produces the tension crack in the CUMULATIVE BLASTING process, because there is certain space in the cave, in later stage stress equilibrium process, continue to occur Zhang Xingyu shear failure, produce new crack, greatly increase the natural Fracture Networks of reservoir and the specific area of reservoir, finally formed main borehole large tracts of land seepage channel on every side; Enlarge effective row and adopted area, reduced well spacing density.
Main technique has: straight well and deviated directional drilling drilling well, build the cave, explosion, " bridges formation " sealing of hole, cement the well perforation and pressure break etc.Wherein main shaft is straight well, and technical data is identical with conventional gas production straight well; Auxiliary cave well is branch directional well and cluster well, 56, auxiliary cave, and branch directional well and cluster well drilling well and make the cave and adopt oil base drilling fluid, the cave diameter is 1.20 meters; Cave spacing and cave horizontal movement minimum are 10 meters, are 620 meters to the maximum.56 kilograms of every meter doses of CUMULATIVE BLASTING (repetition explosion), 2800 kilograms of single cave doses always need 156800 kilograms, explosive.Wherein four apart from the mode that is aided with high enegry gas fracturing in main shaft nearest auxiliary cave.1.20 square kilometres of Area of a wells.
(2) certain tight sand gas reservoir, 1800 meters of buried depths, 20 meters of thickness.
Bore the substantially same embodiment of well-completing process (1), also can adopt water-base drilling fluid.Wherein main shaft is straight well, and technical data is identical with conventional gas production straight well; Auxiliary cave well is the branch directional well, 40, auxiliary cave, and 1.00 meters of cave diameters, cave spacing and cave horizontal movement minimum are 40 meters, are 500 meters to the maximum.56 kilograms of every meter doses of CUMULATIVE BLASTING (repetition explosion), 1120 kilograms of single cave doses need 44800 kilograms, explosive altogether.Wherein adopt first CUMULATIVE BLASTING, the mode of rear fracturing in four auxiliary caves.1.10 square kilometres of Area of a wells.
(3) certain carbonate reservoir (two-layer), buried depth 2000 and 2100 meters, 12 meters and 10 meters of thickness.
Bore the substantially same embodiment of well-completing process (1), can adopt water-base drilling fluid.Wherein main shaft is straight well, and technical data is identical with conventional gas and oil Tibetan production straight well; Auxiliary cave well is the branch directional well, and 26, every layer of auxiliary cave amounts to 52, and sequence of construction gets on, get off; Cave spacing and cave horizontal movement minimum are 20 meters, are 460 meters to the maximum, 0.80 meter of cave diameter, and 56 kilograms of every meter doses of CUMULATIVE BLASTING (repetition explosion) need 32032 kilograms, explosive altogether.Wherein in six auxiliary caves, (two-layer each three of up and down) adopts first CUMULATIVE BLASTING, the mode of rear pressure break.After the cave transformation is completed, carry out acid fracturing before sealing and process.0.66 square kilometre of individual layer control area, double-deck 1.32 square kilometres of the control areas that add up to of individual well.
(4) certain shale oil reservoir, 1800 meters of buried depths, 30 meters of thickness.
Bore the substantially same embodiment of well-completing process (1), adopt oil base drilling fluid.Wherein main shaft is straight well, and technical data is identical with conventional oil reservoir production straight well; Auxiliary cave well is the branch directional well, 45, auxiliary cave, and 1.50 meters of cave diameters, cave spacing and cave horizontal movement minimum are 30 meters, are 550 meters to the maximum.56 kilograms of every meter doses of CUMULATIVE BLASTING (repetition explosion), 1680 kilograms of single cave doses, CUMULATIVE BLASTING needs 75600 kilograms, explosive altogether.Wherein adopt first CUMULATIVE BLASTING in four auxiliary caves, the mode of explosion in rear layer.0.95 square kilometre of Area of a well.
although understand in detail the present invention in conjunction with Multi-instance, but protection scope of the present invention is not limited to this, any those skilled in the art that all can be from accompanying drawing of the present invention, find out other advantage of the present invention in manual and claims, and then can expect easily making various changes or replacement, as bore the change of completion technique, the adjustment of auxiliary cave distribution pattern, the variation of drilling fluid, the improvement of fracturing fluid and fracturing material, the variation of blasting method and acidifying liquid, sequence of construction of cave and main shaft etc., within all being encompassed in protection scope of the present invention.The present invention includes the institute that belongs in its claims scope changes or is out of shape.
Claims (9)
1. low-permeability oil gas reservoir exploitation methods such as shale gas; It is characterized in that comprising: a bite main shaft is set, sets up to be no less than the auxiliary cave of three in the reservoir around main shaft, mainly carry out reservoir reconstruction by explosion in described cave; Thereby the increase crack, and crack and main shaft are communicated with each other; Keep the cave shut-in well after the transformation of auxiliary cave, main shaft is produced row and is adopted.
2. exploitation method according to claim 1, the completion mode that it is characterized in that described main shaft is straight well or inclined shaft.
3. exploitation method according to claim 1, the completion mode that it is characterized in that described auxiliary cave are branch directional well or cluster well or are both combination.
4. according to claim 1,3 described exploitation methods, it is characterized in that the horizontal range between described auxiliary cave, and the horizontal range between auxiliary cave and main shaft is 10～2000 meters, auxiliary cave diameter is not less than 150 millimeters.
5. exploitation method according to claim 1, is characterized in that described explosion is CUMULATIVE BLASTING, and the cumulative direction is the reservoir bearing of trend.
6. exploitation method according to claim 1, is characterized in that the rear shut-in well of described auxiliary cave transformation refers to seal cave well reservoir with overlying strata, keeps cave in reservoir.
7. exploitation method according to claim 1, is characterized in that described reservoir reconstruction also comprises explosion in high enegry gas fracturing, layer, fracturing, acid fracturing.
8. exploitation method according to claim 5 is characterized in that described CUMULATIVE BLASTING adopts from bottom to top mode to carry out successively for the thick-layer reservoir; Described CUMULATIVE BLASTING, after first completing reservoir CUMULATIVE BLASTING reservation cave, bottom and shut-in well then is completed the top reservoir and is made cave and CUMULATIVE BLASTING for many reservoirs.
9. according to claim 5,8 described exploitation methods, it is characterized in that described CUMULATIVE BLASTING carries out for the hard reservoir that is difficult for collapsing that twice or twice are above repeats explosion.
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| CN 201310117450 CN103161434A (en) | 2013-04-07 | 2013-04-07 | Mining method for low permeability reservoir of shale gas and the like |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005748A (en) * | 2014-05-21 | 2014-08-27 | 华南理工大学 | Static blasting fracturing method used for exploitation of shale gas and other low permeability oil and gas reservoirs |
| CN104462849A (en) * | 2014-12-24 | 2015-03-25 | 中国石油大学(北京) | Method and device for predicating characteristics of shale gas reservoir |
| CN105756651A (en) * | 2016-04-18 | 2016-07-13 | 中国海洋石油总公司 | Positive-pressure-drilling water plugging and staged-fracturing production increasing process method for adjustment well |
| CN108729896A (en) * | 2018-05-21 | 2018-11-02 | 西南石油大学 | A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system |
| CN109657299A (en) * | 2018-11-28 | 2019-04-19 | 郭建林 | Shale gas reservoir recovery method |
| CN111350486A (en) * | 2020-03-02 | 2020-06-30 | 中国地质大学（北京） | Development well arrangement method based on circumferential stress |
| CN112983375A (en) * | 2021-03-01 | 2021-06-18 | 中国石油天然气股份有限公司 | Well site construction method and device |
| CN113153229A (en) * | 2021-04-23 | 2021-07-23 | 河北工业大学 | Method and device for screening green development scheme of shale gas |
| CN113338873A (en) * | 2021-07-02 | 2021-09-03 | 中国矿业大学 | Shale gas reservoir multilateral well detonation pressure enhanced extraction method |
| CN114135265A (en) * | 2021-10-19 | 2022-03-04 | 中海油能源发展股份有限公司 | Low-cost and high-efficiency transformation process method for low-permeability reservoir of offshore oilfield |
| CN115126469A (en) * | 2022-06-22 | 2022-09-30 | 中国地质大学（武汉） | Method and computer equipment for optimizing deployment of coal bed gas well pattern |
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- 2013-04-07 CN CN 201310117450 patent/CN103161434A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005748A (en) * | 2014-05-21 | 2014-08-27 | 华南理工大学 | Static blasting fracturing method used for exploitation of shale gas and other low permeability oil and gas reservoirs |
| CN104462849A (en) * | 2014-12-24 | 2015-03-25 | 中国石油大学(北京) | Method and device for predicating characteristics of shale gas reservoir |
| CN104462849B (en) * | 2014-12-24 | 2017-06-06 | 中国石油大学(北京) | Shale gas reservoir characteristics Forecasting Methodology and device |
| CN105756651A (en) * | 2016-04-18 | 2016-07-13 | 中国海洋石油总公司 | Positive-pressure-drilling water plugging and staged-fracturing production increasing process method for adjustment well |
| CN108729896A (en) * | 2018-05-21 | 2018-11-02 | 西南石油大学 | A kind of hot dry rock robot explosion waterpower composite fracturing brill completion system |
| CN108729896B (en) * | 2018-05-21 | 2020-06-16 | 西南石油大学 | Hot dry rock robot explosion hydraulic composite fracturing drilling and completion system |
| CN109657299B (en) * | 2018-11-28 | 2023-01-17 | 郭建林 | Shale gas reservoir mining method |
| CN109657299A (en) * | 2018-11-28 | 2019-04-19 | 郭建林 | Shale gas reservoir recovery method |
| CN111350486A (en) * | 2020-03-02 | 2020-06-30 | 中国地质大学（北京） | Development well arrangement method based on circumferential stress |
| CN112983375A (en) * | 2021-03-01 | 2021-06-18 | 中国石油天然气股份有限公司 | Well site construction method and device |
| CN112983375B (en) * | 2021-03-01 | 2022-12-02 | 中国石油天然气股份有限公司 | Well site construction method and device |
| CN113153229B (en) * | 2021-04-23 | 2022-10-21 | 河北工业大学 | Method and device for screening green development scheme of shale gas |
| CN113153229A (en) * | 2021-04-23 | 2021-07-23 | 河北工业大学 | Method and device for screening green development scheme of shale gas |
| CN113338873A (en) * | 2021-07-02 | 2021-09-03 | 中国矿业大学 | Shale gas reservoir multilateral well detonation pressure enhanced extraction method |
| CN114135265A (en) * | 2021-10-19 | 2022-03-04 | 中海油能源发展股份有限公司 | Low-cost and high-efficiency transformation process method for low-permeability reservoir of offshore oilfield |
| CN114135265B (en) * | 2021-10-19 | 2023-09-29 | 中海油能源发展股份有限公司 | Low-cost and high-efficiency transformation process method for low-permeability reservoir of offshore oil field |
| CN115126469A (en) * | 2022-06-22 | 2022-09-30 | 中国地质大学（武汉） | Method and computer equipment for optimizing deployment of coal bed gas well pattern |
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