CN106593389A - Method for fracturing high-angle naturally-fractured oil reservoir by using permanent plugging agent - Google Patents
Method for fracturing high-angle naturally-fractured oil reservoir by using permanent plugging agent Download PDFInfo
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- CN106593389A CN106593389A CN201611200308.6A CN201611200308A CN106593389A CN 106593389 A CN106593389 A CN 106593389A CN 201611200308 A CN201611200308 A CN 201611200308A CN 106593389 A CN106593389 A CN 106593389A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000002981 blocking agent Substances 0.000 claims description 32
- 239000004576 sand Substances 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 21
- 238000001802 infusion Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 abstract description 36
- 208000010392 Bone Fractures Diseases 0.000 abstract description 34
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000005086 pumping Methods 0.000 abstract 2
- 208000013201 Stress fracture Diseases 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water 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
- E21B43/25—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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- 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)
- Earth Drilling (AREA)
Abstract
The invention discloses a method for fracturing a high-angle naturally-fractured oil reservoir by using a permanent plugging agent; the method comprises: drifting a well with a drift size gauge tool, and washing mechanical impurities in a shaft; running pressure test; perforating a segment to be fractured in the shaft; tripping in a fracturing string to carry out fracturing; pumping a prepad fluid; squeezing large-particle-size temporary plugging agents of different ratios in multiple rounds to a prepad fluid phase in a slug manner so that high-angle natural fractures are plugged primarily; pumping a sand-carrying fluid; filling the high-angle natural micro fractures by using a small-particle plugging agent in spiral slug sand-adding manner so that effective propagation of the fractures is ensured; finally, opening the well for gushing, acquiring production, and completing the well. The method provided herein has the advantages that upper and lower high-angle natural factures of a reservoir are effectively plugged, fracture breakthrough during fracturing is prevented, fracture height is controlled, long-fracture modification is achieved, full modification of the reservoir is guaranteed, a fracturing technical mode suitable for high-angle naturally-fractured reservoirs is formed, and initial yield is increased by 20% and above.
Description
【Technical field】
The invention belongs to well fracturing renovation technique field, and in particular to one kind realizes high angle using permanent blocking agent
The fracturing process of intrinsic fracture oil reservoir.
【Background technology】
Northwestward day ring down warping region in Changqing oilfields basin is located at day ring down warping region and western edge thrust belts, tomography, fracture development.Its ring
The regions resources such as the down warping region northwestward and Xunyi-Huang Ling have a high potential, and are oil explorations, evaluate the block of emphasis.But these areas
Block intrinsic fracture is developed, Partial Block such as Herba Ephedrae mountain, day ring depression bottom water development.From in terms of core observation situation, this area's fine fisssure
Seam aperture based on 0-0.3mm, based on 0-20cm, based on 0-3cm, split fine fisssure kerf spacing cutting-in with high angle construction by crack
Based on seam, high angle, oblique and low angle diaclase proportion are：53.7%th, 14.6%, 31.7%.Due to high angle
Fracture development easily causes pressure break major fracture and fully cannot transform, and proppant pack effect is poor, or links up along high angle fracture
Bottom water, shows as well water in later stage production and steeply rises, and yield declines rapidly, and water process workload is increased, oil reservoir produced
Even there is watered-out well in low degree, and production cost is significantly improved, and economic benefit substantially glides.The Fractured of this kind of high angle development
Effective blocking technology on stratum always one is generally difficult to the problem for solving.
Diverting agent used is temporarily blocked up in crack at present mainly has suspension blocking agent, underground crosslinked type blocking agent and ground granular pattern to block up
Agent etc..Multistage temporarily stifled fracturing technology is generally used, net pressure in seam is improved by the plugging action of diverting agent (bridging-off agent),
Force natural microcrack to be opened and even produce crack steering, so as to form the Fracture System that major fracture is combined with secondary fracture,
The unlatching of microscopic checks, greatly reduces the filtrational resistance of reservoir, improves supply capability of the reservoir matrix to crack wall, so as to
Realize improving the purpose of well yield.The technique mainly adds diverting agent by classification of the main plus sand stage (2-3 levels), makes artificial
In crack, pressure is continuously increased, the higher microcrack of the Opening pressure that builds the pressure successively.
Above-mentioned process is that preferential unlatching invalid hidden is split with what biggest principal stress direction was bordering on that parallel or low-angle intersects
Seam, is allowed to be changed into " extensional " aobvious crack, and for the reservoir of high angle intrinsic fracture oil reservoir development, above-mentioned technique is not suitable with.And
Blocking agent type is limited, and suspension blocking agent is easily by function influences such as turbulent flows, it is difficult to form larger pressure drag；Underground crosslinked type is blocked up
Agent is uneven due to being crosslinked, and is difficult to reach desirable strength.
【The content of the invention】
The technical problem to be solved is for above-mentioned deficiency of the prior art, there is provided a kind of using permanent
Property blocking agent realize the fracturing process of high angle intrinsic fracture oil reservoir, split with solving the insufficient low yield of reservoir reconstruction and linking up high angle
The problem of seam water outlet.
The present invention is employed the following technical solutions：
A kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent, is comprised the following steps：
S1, using drift size gauge tool drifting：The artificial bottom of a well of drifting to operation well, it is ensured that pit shaft is clean, Inspection well it is interior
Whether footpath has deformation or blocks, if operation well has deformation or blocks, well workover；
S2, well-flushing：The mechanical admixture cleaned in the pit shaft；
S3, pressure testing：Pressure testing test is carried out to the pit shaft；
S4, perforation：Perforation is carried out to planning fracturing section in the pit shaft；
S5, fracturing tubing string：Lower tubular column carries out pressing crack construction to the fracturing section；
S6, infusion prepad fluid：Squeeze the big particle diameter diverting agent of different proportion in a pulsed fashion to many rounds of pad stage,
Preliminary closure high angle intrinsic fracture；
S7, infusion load fluid：Sand mode is added to fill the natural microcrack of high angle with small particle blocking agent and spiral slug, really
Protect crack effectively to extend；
S8, open flow, ask product and completion.
Further, in step S2, cleaning pit shaft mechanical admixture is little to content of impurities in flushing fluid is returned out
In 0.2%.
Further, in step S3, wellbore pressure test process, clear water pressure testing 30MPa, voltage stabilizing 30 minutes, pressure drop is less than
0.7MPa is qualified；If pressure drop amplitude exceedes above-mentioned standard, look for Lou and well workover.
Further, step S4 is specifically, utilize cable or tubing transmission to adopt hydraulic jet perforation or firepower
Gun perforation process carries out perforation.
Further, in step S6, when in the crack, pressure rising value is less than 5MPa, then repeat step S6, after
Continuous infusion blocking agent slug；When in the crack, pressure rising value is higher than 5MPa, then into next step.
Further, the prepad fluid is accounted for and always enters the 40% of ground liquid measure volume, and the big particle diameter diverting agent particle diameter is 1.0-
2.0mm, pulse series be 3 grades, interval time 2-3min.
Further, the diverting agent is oil-soluble temporary plugging agent, and the volume fraction in the prepad fluid is 0.10,0.20
With 0.15.
Further, step S7 is specially：The small particle blocking agent of 0.1-0.5mm is initially charged, is further filled described
The space of big particle diameter blocking agent, consolidates plugging effect, then using sand mode is spirally added, staged puies forward high sand ratio infusion, according to pressure
Power rises or superpressure situation reduces sand ratio or stops infusion, it is ensured that operation pressure is less than crack Opening pressure, it is to avoid unlatching is sealed
Layer is altered in stifled high angle fracture or crack, it is ensured that the abundant transformation of reservoir.
Compared with prior art, the present invention at least has the advantages that：
The method that the present invention is provided circulates the big particle diameter blocking agent for adding different proportion by pad stage in slug mode
Boosting in seam is formed, the load fluid stage adds sand mode to add small particle blocking agent further to block crack with spiral slug, consolidates
Plugging effect；Spiral plus sand mode avoids opening the high angle fracture that blocked or layer is altered in crack, it is ensured that reservoir fully changes
Make.It is solid particle under the blocking agent type room temperature of filling, with certain hardness and intensity, fragility is presented under stressing conditions and is broken
It is bad, do not glue pump；When temperature reaches certain value (40 DEG C), diversion agent granule softens, and plastic deformation occurs.
Further, diverting agent density is close to fracturing fluid, does not result in blocking agent settlement influence sand carrying effect.
Further, the present invention defines a kind of side that the effective fracturing reform of oil reservoir is developed for high angle intrinsic fracture
Method, forms the sealing agent product of closure intrinsic fracture, improves well yield.
In sum, the method that the present invention is provided effectively has blocked the upper and lower high angle intrinsic fracture of reservoir, prevents pressure break mistake
In journey, layer is altered in crack, and it is high to control seam, realizes that slit is transformed, it is ensured that the abundant transformation of reservoir, is formed and is adapted to that high angle is natural to be split
The fracturing technique pattern of seam reservoir, realizes that individual well formation testing success rate improves 20%, and the initial production of operation improves more than 20%.
Below by drawings and Examples, technical scheme is described in further detail.
【Description of the drawings】
Fig. 1 is the schematic flow sheet of the present invention；
Fig. 2 is pressing crack construction characteristic curve of the present invention.
【Specific embodiment】
Fracturing process of the present invention is mainly used in high angle intrinsic fracture development oil reservoir, by carrying out high angle intrinsic fracture
Oil reservoir blocks Fracturing Technique Study, forms the raising well yield fracturing technique pattern for being adapted to high angle intrinsic fracture reservoir, carries
High high angle intrinsic fracture oil reservoir oil testing and fracture effect, and the scale development for crack elimination next step provides good technology
Deposit, has broad application prospects.
Refer to shown in Fig. 1, the invention discloses a kind of realize high angle intrinsic fracture oil reservoir using permanent blocking agent
Fracturing process, comprises the following steps：
S1, using drift size gauge tool drifting：The artificial bottom of a well of drifting to operation well, it is ensured that pit shaft is clean, Inspection well it is interior
Whether footpath has deformation or blocks, if operation well has deformation or blocks, well workover；
S2, well-flushing：The mechanical admixture cleaned in the pit shaft；
Cleaning pit shaft mechanical admixture is not more than 0.2% to content of impurities in flushing fluid is returned out；
S3, pressure testing：Pressure testing test is carried out to the pit shaft；
Wellbore pressure test process, clear water pressure testing 30MPa, voltage stabilizing 30 minutes, pressure drop are qualified less than 0.7MPa；If pressure drop
Amplitude exceedes above-mentioned standard, then look for Lou and well workover；
S4, perforation：Perforation is carried out to planning fracturing section in the pit shaft；
Specially：Perforation is carried out using hydraulic jet perforation or firepower gun perforation process using cable or tubing transmission；
S5, fracturing tubing string：Lower tubular column carries out pressing crack construction to the fracturing section；
S6, infusion prepad fluid：Pad stage injects the big particle diameter diverting agent of different proportion in a pulsed fashion, preliminary to block
High angle intrinsic fracture；
Wherein, the prepad fluid is accounted for and always enters the 40% of ground liquid measure volume, and the big particle diameter diverting agent particle diameter is 1.0-
2.0mm, pulse series be 3 grades, interval time 2-3min；The diverting agent is oil-soluble temporary plugging agent, in the prepad fluid
Volume fraction is 0.10,0.20 and 0.15；
S7, infusion load fluid：Sand mode is added to fill the natural microcrack of high angle with small particle blocking agent and spiral slug, really
Protect crack effectively to extend；
Specially：The small particle blocking agent of 0.1-0.5mm is initially charged, the space of the big particle diameter blocking agent is further filled, is consolidated
Gu plugging effect, then using spirally adding sand mode, staged to put forward high sand ratio infusion, risen according to pressure or superpressure situation is reduced
Sand ratio stops infusion, it is ensured that operation pressure is less than crack Opening pressure, it is to avoid high angle fracture or crack that unlatching has been blocked
Alter layer, it is ensured that the abundant transformation of reservoir.
S8, open flow, ask product and completion.
Embodiment
Refer to shown in Fig. 2, by taking A test wells as an example, pad stage adds big particle diameter diverting agent, 3 pulses of infusion to apply
Work pressure rises 2MPa and tentatively blocks high angle fracture；Initial stage in load fluid stage adds small particle diverting agent, pressure to rise 1MPa,
Purpose is by nearly well band sealing of polishing, closure microcrack, improves fluid efficiency, so as to reduce operation pressure, it is ensured that subsequently often
Effective filling of the main fracturing sand feeding of rule particle diameter proppant.The main fracturing sand feeding later stage adds sand, so-called spiral shell using spiral plus sand mode
It is rotating to rise plus sand from low sand than starting ladder, sand proportion new low point sand is reduced again after several ladders rise plus sand than starting ladder.Should
Plus sand mode effectively reduces operation pressure, it is ensured that crack effectively extends.
Two mouthfuls of wells of test, the broken pressure of construction are obvious, go into operation day at initial stage oil-producing 3.32t/d, and aqueous 20.8%, operation initial production
Relatively contrast well improves 20.7%.Test well and contrast well oil reservoir, pressure break, operation parameter such as following table：
The problem that the method that the present invention is provided easily is altered for high angle intrinsic fracture pressure-break height, there is provided sealing agent closure is split
Seam fracturing technique method, forms permanent closure pressure break special product and Technology, solves high angle intrinsic fracture oil reservoir people
The work fracture height difficult problem for causing invalid pressure break out of control, so as to realize improving the purpose of well yield.
Above content technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, claims of the present invention is each fallen within
Protection domain within.
Claims (8)
1. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent, it is characterised in that including following
Step：
S1, using drift size gauge tool drifting：The artificial bottom of a well of drifting to operation well, it is ensured that pit shaft is clean, and the internal diameter of Inspection well is
It is no to have deformation or block, if operation well has deformation or blocks, well workover；
S2, well-flushing：The mechanical admixture cleaned in the pit shaft；
S3, pressure testing：Pressure testing test is carried out to the pit shaft；
S4, perforation：Perforation is carried out to planning fracturing section in the pit shaft；
S5, fracturing tubing string：Lower tubular column carries out pressing crack construction to the fracturing section；
S6, infusion prepad fluid：Squeeze the big particle diameter diverting agent of different proportion in a pulsed fashion to many rounds of pad stage, tentatively
Closure high angle intrinsic fracture；
S7, infusion load fluid：Sand mode is added to fill the natural microcrack of high angle with small particle blocking agent and spiral slug, it is ensured that to split
It is sewed with effect extension；
S8, open flow, ask product and completion.
2. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 1,
Characterized in that, in step S2, cleaning pit shaft mechanical admixture is not more than to content of impurities in flushing fluid is returned out
0.2%.
3. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 1,
It is characterized in that：In step S3, wellbore pressure test process is specifically, clear water pressure testing 30MPa, voltage stabilizing 30 minutes, pressure drop is less than
0.7MPa is qualified；If pressure drop amplitude exceedes above-mentioned standard, look for Lou and well workover.
4. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 1,
It is characterized in that：Step S4 is specifically, utilize cable or tubing transmission to adopt hydraulic jet perforation or firepower perforation work
Skill carries out perforation.
5. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 1,
Characterized in that, in step S6, when in the crack, pressure rising value is less than 5MPa, then repeat step S6, continues infusion
Blocking agent slug；When in the crack, pressure rising value is higher than 5MPa, then into next step.
6. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 3,
It is characterized in that：The prepad fluid is accounted for and always enters the 40% of ground liquid measure volume, and the big particle diameter diverting agent particle diameter is 1.0-2.0mm,
Pulse series be 3 grades, interval time 2-3min.
7. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 4,
It is characterized in that：The diverting agent is oil-soluble temporary plugging agent, and the volume fraction in the prepad fluid is 0.10,0.20 and
0.15。
8. a kind of fracturing process that high angle intrinsic fracture oil reservoir is realized using permanent blocking agent according to claim 1,
Characterized in that, step S7 is specially：The small particle blocking agent of 0.1-0.5mm is initially charged, the big particle diameter is further filled
The space of blocking agent, consolidates plugging effect, then using spirally adding sand mode, staged to put forward high sand ratio infusion, is risen according to pressure
Or superpressure situation reduces sand ratio or stops infusion, it is ensured that operation pressure is less than crack Opening pressure, it is to avoid the height that unlatching has been blocked
Layer is altered in angle crack or crack, it is ensured that the abundant transformation of reservoir.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558980A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of low-density, which is temporarily blocked up, suppresses the long extension fracturing process of seam |
| CN108952668A (en) * | 2017-05-17 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of fracturing process of normal pressure shale gas reservoir reservoir |
| CN109826607A (en) * | 2019-04-02 | 2019-05-31 | 青岛大地新能源科技研发有限公司 | A kind of novel temporary stall is to fracturing process |
| CN110374574A (en) * | 2018-04-13 | 2019-10-25 | 中国石油化工股份有限公司 | The method of straight well directional well massive hydraulic fracture control critical eigenvalue complexity |
| CN110761765A (en) * | 2018-07-27 | 2020-02-07 | 中国石油化工股份有限公司 | Volume fracturing method for activating natural fracture in large range |
| CN111485864A (en) * | 2020-04-30 | 2020-08-04 | 中国石油天然气股份有限公司 | Hydraulic fracturing method for long-acting sealing of high-angle fracture |
| CN111561300A (en) * | 2020-05-26 | 2020-08-21 | 中国石油天然气股份有限公司 | Method for improving water drive effect of water injection well of ultra-low permeability fractured reservoir |
| CN112031733A (en) * | 2020-09-30 | 2020-12-04 | 重庆地质矿产研究院 | Fracturing method for forming and efficiently supporting complex seam network of deep shale reservoir |
| CN112727422A (en) * | 2020-12-21 | 2021-04-30 | 新疆永升能源有限责任公司 | Sand-carrying liquid squeezing reservoir transformation method |
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| CN108952668B (en) * | 2017-05-17 | 2020-11-20 | 中国石油化工股份有限公司 | Fracturing method of normal-pressure shale gas reservoir |
| CN107558980A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of low-density, which is temporarily blocked up, suppresses the long extension fracturing process of seam |
| CN107558980B (en) * | 2017-07-18 | 2020-05-08 | 中国石油天然气股份有限公司 | Low-density temporary plugging crack length-extension-restraining fracturing method |
| CN110374574A (en) * | 2018-04-13 | 2019-10-25 | 中国石油化工股份有限公司 | The method of straight well directional well massive hydraulic fracture control critical eigenvalue complexity |
| CN110761765A (en) * | 2018-07-27 | 2020-02-07 | 中国石油化工股份有限公司 | Volume fracturing method for activating natural fracture in large range |
| CN110761765B (en) * | 2018-07-27 | 2021-11-02 | 中国石油化工股份有限公司 | Volume fracturing method for activating natural fracture in large range |
| CN109826607A (en) * | 2019-04-02 | 2019-05-31 | 青岛大地新能源科技研发有限公司 | A kind of novel temporary stall is to fracturing process |
| CN111485864A (en) * | 2020-04-30 | 2020-08-04 | 中国石油天然气股份有限公司 | Hydraulic fracturing method for long-acting sealing of high-angle fracture |
| CN111561300A (en) * | 2020-05-26 | 2020-08-21 | 中国石油天然气股份有限公司 | Method for improving water drive effect of water injection well of ultra-low permeability fractured reservoir |
| CN112031733A (en) * | 2020-09-30 | 2020-12-04 | 重庆地质矿产研究院 | Fracturing method for forming and efficiently supporting complex seam network of deep shale reservoir |
| CN112727422A (en) * | 2020-12-21 | 2021-04-30 | 新疆永升能源有限责任公司 | Sand-carrying liquid squeezing reservoir transformation method |
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