CN107806337A - Shale gas reservoir horizontal well selectivity is by cluster fracturing technology - Google Patents
Shale gas reservoir horizontal well selectivity is by cluster fracturing technology Download PDFInfo
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- CN107806337A CN107806337A CN201711139149.8A CN201711139149A CN107806337A CN 107806337 A CN107806337 A CN 107806337A CN 201711139149 A CN201711139149 A CN 201711139149A CN 107806337 A CN107806337 A CN 107806337A
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- cluster
- pressure break
- horizontal well
- coiled tubing
- shale gas
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
Abstract
The invention discloses a kind of shale gas reservoir horizontal well selectivity by cluster fracturing technology, including：Net horizontal section is divided into some clusters, every time by coiled tubing carry out 1 ~ 4 cluster abrasive perforating after main pressure break, repeatedly by cluster pressure break complete horizontal well fracturing reform；The main pressure break later stage carries out turning cluster using sand plug closure sealing, 1 cluster of constructing carries out main pressure break or light casing fracturing using coiled tubing with casing annulus, 2 ~ 4 clusters of constructing act well head using coiled tubing and carry out the main pressure break of light sleeve pipe, and whole pit shaft keeps full-bore in fracturing process.The present invention is to realize sub-clustering by the method for the more cluster abrasive perforatings of oil pipe and the main artificial sand plug of pressure break later stage sealing and turn cluster, mechanical packing is not needed, can horizontal well implement random order, optional position selectivity by cluster pressure break, and in whole work progress and construction terminate after pit shaft remain full-bore, to realize the transformation volume optimal control of shale gas horizontal well.
Description
Technical field
The present invention relates to a kind of shale gas reservoir fracture method for horizontal well, more particularly to a kind of shale gas reservoir horizontal well selectivity
By cluster fracturing technology.
Background technology
At present, Sichuan Basin shale gas horizontal well reservoir fracturing improvement is generally using composite bridge plug segmentation volume fracturing skill
Art, pressure break injection mode are injected for light sleeve pipe, and the complexity in interference increase crack between cluster is formed by way of being segmented more clusters, whole
Preferable correctional effect is achieved on body.But for the stronger shale gas reservoir of intersegmental anisotropism, then it is difficult to specific aim
Transform on ground；Simultaneously because fragmentation technique is all to carry out staged fracturing according to the order of net horizontal section B points toward A points at present, set is run into
Situations such as pipe deforms can only discard portion interval or be difficult to reach the purpose of segmentation transformation, by the end of the year 2016, Weiyuan Changning
It is about 13700m that the accumulative set of shale gas horizontal well statistical result showed, which becomes segment length, influences pressure break hop count and reaches 176 sections.
Therefore, the above difficult point for shale gas horizontal well, which needs one kind badly, can realize that volume fracturing is transformed, and and can is flexible
Sub-clustering and with pointedly fracturing technology.
The content of the invention
It is an object of the invention to overcome above mentioned problem existing for prior art, there is provided a kind of shale gas reservoir horizontal well selection
Property is by cluster fracturing technology.The present invention is realized by the method for the more cluster abrasive perforatings of oil pipe and the main artificial sand plug of pressure break later stage sealing
Sub-clustering and turn cluster, it is not necessary to mechanical packing, can horizontal well implement random order, optional position selectivity by cluster pressure break, and
In whole work progress and construction terminate after pit shaft remain full-bore, to realize that the transformation volume of shale gas horizontal well is excellent
Change control and distribution.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of shale gas reservoir horizontal well selectivity is by cluster fracturing technology, it is characterised in that：Net horizontal section is divided into some clusters, every time
By coiled tubing carry out 1 ~ 4 cluster abrasive perforating after main pressure break, repeatedly by cluster pressure break complete horizontal well fracturing reform；Main pressure break
Later stage carries out turning cluster using sand plug closure sealing, and 1 cluster of construction carries out main pressure break or light sleeve pipe using coiled tubing with casing annulus
Pressure break, 2 ~ 4 clusters of construction act well head using coiled tubing and carry out the main pressure break of light sleeve pipe, and whole pit shaft keeps all-pass in fracturing process
Footpath.
Methods described specifically comprises the following steps：
（1）, ground preparation carried out according to construction requirement, coiled tubing through wash well, set highest to be pumped safely, main pressure break is accurate
It is standby；
（2）, by coiled tubing combination abrasive perforating instrument horizontal well specified location carry out the first cluster abrasive perforating；
（3）, main pressure break do not play out pit shaft if single cluster pressure break, coiled tubing, using annular space infusion, according to string friction and stratum
Rupture pressure break and select reasonable discharge capacity；Main pressure break plays out pit shaft if more cluster pressure breaks, then coiled tubing after completing more shower holes, passes through
Light sleeve pipe carries out main pressure break；
（4）, after injecting liquid measure and reaching the 85% of this section design liquid measure, it is temporarily stifled that infusion proppant section sand fills in row；
（5）, after the sand for back-up sand enters stratum eyelet, reduce injection discharge capacity until sand plug fully enter stratum；
（6）, if wellbore pressure rise to over ground set highest safely pump pressure if block successfully；
（7）, carry out second of abrasive perforating and by cluster pressure break, the cluster of pressure break number of clusters 1 ~ 4, pressure break position can be in transformation section optional position
Selection；
（8）, repeat step 3-7 complete all sections of pressure breaks.
The step（1）In, pump pressure is more than 10 ~ 20MPa of operation pressure to highest safely.
The step（3）In, for main pressure break if single cluster pressure break, reasonable discharge capacity is 4 ~ 6m3/ min, 600 ~ 800m of liquid measure3。
The step（3）In, for main pressure break if more cluster pressure breaks, the discharge capacity of main pressure break is 10 ~ 13m3/ min, liquid measure are single cluster
Liquid measure is multiplied by number of clusters.
The step（4）In, each slug liquid measure is 1 ~ 1.5 infusion pipe column volumes, 260 ~ 400kg/m of sand concentration3。
The step（6）In, sand concentration is improved if unsuccessful to 400 ~ 480kg/m3Continue next section of sand plug of infusion, if
It is unsuccessful again, higher concentration sand plug closure preforation tunnel is continuously added until pit shaft reaches highest safe pressure or selection sleeve pipe
Closure pressure break cluster is carried out in interior back-up sand.
Using the advantage of the invention is that：
1st, the present invention can implement the selective staged fracturing of optional position and order in whole net horizontal section.For in transformation process
The problems such as fracture zone repeats covering, intrinsic fracture influences, can avoid the position, after carrying out follow-up some cluster pressure breaks, then to this
Region carries out pressure break.Finally ensure distributing rationally for whole net horizontal section transformation region.
2nd, the present invention carries out artificial sand stall cluster using proppant to sealing, and without using mechanical packer, perforation cluster can be
Horizontal segment optional position selects, and perforating site is more flexible.Construction can select 1 ~ 4 cluster pressure break according to reservoir demand every time, have concurrently
Single cluster pinpoints the advantages of crack initiation and more cluster massive hydraulic fractures.
3rd, full-bore can be kept using the present invention, work progress pit shaft, whole horizontal segment optional position, any suitable can be met
The fracturing reform of sequence
4th, due to carrying out sub-clustering not by the way of mechanical packing, tool pipe string is 51/2" minimum outer diameter 79mm in sleeve pipe, to portion
Point casing deformation well has certain adaptability, can effectively solve set become undergauge etc. cause mechanical bridge plug and perforation tool can not tripping in etc. it is multiple
Miscellaneous problem.
5th, the operations such as mill bridging plug need not be bored after pressure break of the present invention, reduce subsequent construction operating risk, main pressure break finishes
Direct labor's sand plug turns cluster afterwards, and pit shaft is cleaned after all sections of pressure breaks, and direct open flow asks production.
Brief description of the drawings
Fig. 1 is present invention process flow chart；
Fig. 2 is selectivity by cluster pressing crack construction order and position view；
Fig. 3 is the single cluster construction curve figure that the present invention is implemented；
Fig. 4 is the 2 cluster construction curve figures that the present invention is implemented；
Fig. 5 is the 4 cluster construction curve figures that the present invention is implemented.
Embodiment
Embodiment 1
A kind of shale gas reservoir horizontal well is selective by cluster fracturing technology, including：Net horizontal section is divided into some clusters, passes through company every time
Continuous oil pipe carries out main pressure break after 1 ~ 4 cluster abrasive perforating, the fracturing reform of horizontal well is repeatedly completed by cluster pressure break；The main pressure break later stage adopts
Carried out turning cluster with sand plug closure sealing, 1 cluster of construction carries out main pressure break or light casing fracturing with casing annulus using coiled tubing, applied
The cluster of work 2 ~ 4 acts well head using coiled tubing and carries out the main pressure break of light sleeve pipe, and whole pit shaft keeps full-bore in fracturing process.
Methods described specifically comprises the following steps：
（1）, ground preparation carried out according to construction requirement, coiled tubing through wash well, set highest to be pumped safely, main pressure break is accurate
It is standby；
（2）, by coiled tubing combination abrasive perforating instrument horizontal well specified location carry out the first cluster abrasive perforating；
（3）, main pressure break do not play out pit shaft if single cluster pressure break, coiled tubing, using annular space infusion, according to string friction and stratum
Rupture pressure break and select reasonable discharge capacity；Main pressure break plays out pit shaft if more cluster pressure breaks, then coiled tubing after completing more shower holes, passes through
Light sleeve pipe carries out main pressure break；
（4）, after injecting liquid measure and reaching the 85% of this section design liquid measure, it is temporarily stifled that infusion proppant section sand fills in row；
（5）, after the sand for back-up sand enters stratum eyelet, reduce injection discharge capacity until sand plug fully enter stratum；
（6）, if wellbore pressure rise to over ground set highest safely pump pressure if block successfully；
（7）, carry out second of abrasive perforating and by cluster pressure break, the cluster of pressure break number of clusters 1 ~ 4, pressure break position can be in transformation section optional position
Selection；
（8）, repeat step 3-7 complete all sections of pressure breaks.
The step（1）In, pump pressure is more than 10 ~ 20MPa of operation pressure to highest safely.
The step（3）In, for main pressure break if single cluster pressure break, reasonable discharge capacity is 4 ~ 6m3/ min, 600 ~ 800m of liquid measure3。
The step（3）In, for main pressure break if more cluster pressure breaks, the discharge capacity of main pressure break is 10 ~ 13m3/ min, liquid measure are single cluster
Liquid measure is multiplied by number of clusters.
The step（4）In, each slug liquid measure is 1 ~ 1.5 infusion pipe column volumes, 260 ~ 400kg/m of sand concentration3。
The step（6）In, sand concentration is improved if unsuccessful to 400 ~ 480kg/m3Continue next section of sand plug of infusion, if
It is unsuccessful again, higher concentration sand plug closure preforation tunnel is continuously added until pit shaft reaches highest safe pressure or selection sleeve pipe
Closure pressure break cluster is carried out in interior back-up sand.
Embodiment 2
The technological process of the present invention is as shown in figure 1, in Fig. 1, and i=1,2 ... be net horizontal section frequency modification；ni=1,2 ... are
Ith rebuilding construction number of clusters.Present invention process is described further below.
First, ground preparation is carried out according to construction requirement, coiled tubing through wash well, sets highest to be pumped safely（Peace
Full pump pressure is generally higher than 10 ~ 20MPa of operation pressure）, main pressure break preparation.
Main pressure break is if single cluster pressure break, coiled tubing of the tripping in syringe pipe and abrasive perforating instrument, and school is deep, by continuous
The cluster that oil pipe combination abrasive perforating instrument carries out first time pressure break in horizontal well specified location carries out abrasive perforating, using annular space pump
Note, reasonable discharge capacity is selected according to string friction and formation fracture pressure break（4~6m3/ min, 600 ~ 800m of liquid measure3）；Main pressure break if
More cluster pressure breaks, then pit shaft is played out behind the more shower holes of coiled tubing completion, main pressure break is carried out by light sleeve pipe（10 ~ 13m of discharge capacity3/
Min, liquid measure are that single cluster liquid measure is multiplied by number of clusters）.
Chance situation and reservoir sex differernce are bored according to horizontal well reservoir, select single cluster pressure break or more cluster pressure break patterns,
Carry out second of abrasive perforating and can be selected by cluster pressure break, the cluster of pressure break number of clusters 1 ~ 4, pressure break position in transformation section optional position, root
Determined according to design and reservoir demand.Shown in Fig. 2, ith niShower hole and pressure break position are according to detail design and site operation feelings
Condition determines.
Well-flushing school depth, perforation, main pressure break and the sealing back-up sand for repeating the next perforating site of above construction procedure progress are temporarily blocked up
Construction, until completing all fracturing works.
The present invention is applied to shale gas reservoir horizontal well specific aim transformation in the range of continuous oil pipe operation.The present invention is 1
Mouth shale gas horizontal well obtains 72 clusters successful application, and highest efficiency of construction reaches 6 clusters/day（The cluster light sleeve pipe of 1 cluster annular fracturing+5 turns
To pressure break）, without using mechanical packing in work progress, the well has carried out single cluster according to reservoir demand and has combined 2 clusters, 3 by cluster, single cluster
Cluster, 4 clusters and 5 clusters by cluster pressing crack construction.The flexibility of present invention transformation position and transformation and bridging plug point widely used at present
Segment process has generated essential change.Play an important roll to the development of China's shale gas horizontal well volume fracturing technology, and
Guide-testing well-teams reference is served to the refracturing technique of shale gas reservoir.Application prospect is very wide.
Embodiment 3
YSN-1 well finishing drilling layers position is Silurian Longma small stream group, using 139.7mm production string completions.The well finishing drilling well depth
4210m, vertical depth 2539.72m, maximum 84.25 ° of hole deviation, enters target spot and is located at 2510m, goes out target spot and is located at 4210m, horizontal segment length
1700m.YSN-1 wells brill chance reservoir properties are preferable, effecive porosity average out to 3.8%, TOC average out to 3.7%, and total air content is averaged
For 4.3m3/ t, horizontal segment reservoir brittleness index are medium.Reservoir triaxial stress is in strike-slip fault feature, and the horizontal master of minimax should
Power difference is larger（More than 15MPa）, reservoir heterogeneity is strong, and intrinsic fracture is compared with agensis, and pit shaft east side is close to tomography.The well is set
Meter applies the cluster of pressing crack construction 72 of the present invention.
(1) the first cluster abrasive perforating, is carried out in horizontal well specified location by coiled tubing combination abrasive perforating instrument.
(2), 1 ~ 8 cluster is single cluster by cluster pressure break before the well, and using coiled tubing and casing annulus infusion, ground is set
70MPa is that highest is pumped safely（Safety pump pressure is generally higher than 10 ~ 20MPa of operation pressure）.Carry out main pressure break, according to string friction
Reasonable discharge capacity is selected with formation fracture pressure break, by taking the 7th cluster as an example, discharge capacity is 5 ~ 5.8 m3/min.When injection liquid measure reaches the section
After design liquid measure 85%, infusion Proppant Slugs carry out sealing back-up sand and temporarily blocked up, and each slug liquid measure is 1 ~ 1.5 hole volume,
Sand concentration 360kg/m3.After the Proppant Slugs for proppant enter stratum eyelet, by normal construction pressure in pump pressure 3min
Power 62MPa goes up to 72.5MPa and Superpressure stop, blocks successfully（Accompanying drawing 3）.
(3), mention next perforating site perforation on coiled tubing, carry out abrasive perforating and single cluster by cluster pressure break, complete 8
Secondary single cluster is by cluster pressure break.
(4) chance situation and reservoir sex differernce, are bored according to horizontal well reservoir, select single cluster pressure break or more cluster pressure break moulds
Formula, carry out abrasive perforating and by cluster pressure break, the cluster of pressure break number of clusters 1 ~ 4.10 ~ 13m of more cluster pressure break discharge capacities3/ min, liquid measure are single cluster liquid
Amount is multiplied by number of clusters.In fracturing process, find that 29-32 cluster fracture zones have covered by microseismic monitoring and subsequently penetrate
Hole site, and concentrate on the unilateral expansion of pit shaft.Therefore the content of the invention of the well application this patent changes pressure break order, has constructed
2 shower holes and pressure break first are carried out to 37-38 clusters after 29-32 clusters（Accompanying drawing 4）, then again to 33-36 clusters carry out 4 shower holes and
Pressure break, and take termination of pumping in main pressure break mid-term and turn to measure（Accompanying drawing 5）.Avoided by the method for changing pressure break position and order
Follow-up pressure break cluster promotes 33-36 clusters crack in the more uniform expansion in pit shaft both sides in the repetition covering in fracture zone.
(5), according to reservoir conditions and microseism explanation results, by optimizing number of clusters and perforation position by cluster fracturing technology
Put, complete all 72 cluster pressure breaks of the well.The highest efficiency of construction of the well reaches 6 clusters/day（19th ~ 24 cluster）.
Form：YSN-1 wells are by cluster pressure break basic parameter
| N-th pressure break | Each pressure break number of clusters | Total pressure break number of clusters | Discharge capacity m3/min | Liquid measure m3 | Sand amount t | Pressure MPa |
| 1 | 1 | 1 | 3-5.2 | 633.2 | 11.91 | 62-70 |
| 2 | 1 | 2 | 5-5.7 | 756.8 | 24.28 | 61-70 |
| 3 | 1 | 3 | 5.6 | 675 | 30.53 | 61-63 |
| 4 | 1 | 4 | 5.7 | 652.2 | 30.22 | 61-65 |
| 5 | 1 | 5 | 5.5-5.7 | 612.8 | 30.68 | 61-63 |
| 6 | 1 | 6 | 4-5.5 | 688 | 30.2 | 63-67 |
| 7 | 1 | 7 | 4-5.5 | 637 | 30.1 | 60-65 |
| 8 | 1 | 8 | 4-5.4 | 717.6 | 30.13 | 64-68 |
| 9 | 2 | 10 | 5.3-5.7 | 1328.2 | 60.26 | 60-70 |
| 10 | 2 | 12 | 12-12.8 | 658.6 | 15.4 | 64-68 |
| 11 | 4 | 16 | 11.2-11.6 | 2620.5 | 122.52 | 56-63 |
| 12 | 2 | 18 | 11.2-11.6 | 1506.4 | 74.2 | 56-60 |
| 13 | 1 | 19 | 5.5-5.6 | 669.45 | 33.83 | 57-60 |
| 14 | 5 | 24 | 11-12 | 3259.4 | 166.77 | 59-62 |
| 15 | 4 | 28 | 11.2-11.8 | 2665.6 | 143.4 | 58-61 |
| 16 | 4 | 32 | 11.2-11.8 | 2774.7 | 132.35 | 58-68 |
| 17 | 4 | 36 | 11.2-11.8 | 1456.7 | 83.79 | 64-68 |
| 18 | 2 | 38 | 11.2-11.8 | 2666 | 150.62 | 64-70 |
| 19 | 1 | 39 | 5.5-5.6 | 688.1 | 35.1 | 59-63 |
| 20 | 2 | 41 | 11.2-11.8 | 1476.1 | 78.7 | 57-60 |
| 21 | 3 | 44 | 11.2-11.8 | 2030.1 | 105.4 | 57-60 |
| 22 | 1 | 45 | 5.5-5.6 | 690.2 | 35.25 | 57-60 |
| 23 | 2 | 47 | 11 -11.2 | 1286.7 | 79.25 | 53-55 |
| 24 | 4 | 51 | 11.2-11.8 | 2478.6 | 155.12 | 50-53 |
| 25 | 4 | 55 | 11.2-11.6 | 2463.3 | 136.88 | 50-54 |
| 26 | 4 | 59 | 11.2-11.8 | 2151.3 | 112.53 | 50-53 |
| 27 | 2 | 61 | 11.2-11.8 | 1235.3 | 65.75 | 48-51 |
| 28 | 4 | 65 | 11.2-12 | 2514.8 | 147.73 | 42-45 |
| 29 | 3 | 68 | 11.2 | 1659.8 | 103.16 | 40-43 |
| 30 | 2 | 70 | 10.8 | 1065 | 47.3 | 43-64 |
| 31 | 1 | 71 | 10.2 | 576.3 | 25.68 | 42-45 |
| 32 | 1 | 72 | 6.4 | 623.6 | 30.89 | 38-40 |
Claims (7)
1. a kind of shale gas reservoir horizontal well selectivity is by cluster fracturing technology, it is characterised in that：Net horizontal section is divided into some clusters, often
It is secondary by coiled tubing carry out 1 ~ 4 cluster abrasive perforating after main pressure break, repeatedly by cluster pressure break complete horizontal well fracturing reform；Main pressure
Split the later stage turn cluster using sand plug closure sealing, and 1 cluster of construction carries out main pressure break or light set using coiled tubing with casing annulus
Pipe pressure break, 2 ~ 4 clusters of construction act well head using coiled tubing and carry out the main pressure break of light sleeve pipe, and whole pit shaft keeps complete in fracturing process
Latus rectum.
2. shale gas reservoir horizontal well selectivity according to claim 1 is by cluster fracturing technology, it is characterised in that：Methods described
Specifically comprise the following steps：
（1）, ground preparation carried out according to construction requirement, coiled tubing through wash well, set highest to be pumped safely, main pressure break is accurate
It is standby；
（2）, by coiled tubing combination abrasive perforating instrument horizontal well specified location carry out the first cluster abrasive perforating；
（3）, main pressure break do not play out pit shaft if single cluster pressure break, coiled tubing, using annular space infusion, according to string friction and stratum
Rupture pressure break and select reasonable discharge capacity；Main pressure break plays out pit shaft if more cluster pressure breaks, then coiled tubing after completing more shower holes, passes through
Light sleeve pipe carries out main pressure break；
（4）, after injecting liquid measure and reaching the 85% of this section design liquid measure, it is temporarily stifled that infusion proppant section sand fills in row；
（5）, after the sand for back-up sand enters stratum eyelet, reduce injection discharge capacity until sand plug fully enter stratum；
（6）, if wellbore pressure rise to over ground set highest safely pump pressure if block successfully；
（7）, carry out second of abrasive perforating and by cluster pressure break, the cluster of pressure break number of clusters 1 ~ 4, pressure break position can be in transformation section optional position
Selection；
（8）, repeat step 3-7 complete all sections of pressure breaks.
3. shale gas reservoir horizontal well selectivity according to claim 2 is by cluster fracturing technology, it is characterised in that：The step
（1）In, pump pressure is more than 10 ~ 20MPa of operation pressure to highest safely.
4. shale gas reservoir horizontal well selectivity according to claim 3 is by cluster fracturing technology, it is characterised in that：The step
（3）In, for main pressure break if single cluster pressure break, reasonable discharge capacity is 4 ~ 6m3/ min, 600 ~ 800m of liquid measure3。
5. shale gas reservoir horizontal well selectivity according to claim 4 is by cluster fracturing technology, it is characterised in that：The step
（3）In, for main pressure break if more cluster pressure breaks, the discharge capacity of main pressure break is 10 ~ 13m3/ min, liquid measure are that single cluster liquid measure is multiplied by number of clusters.
6. shale gas reservoir horizontal well selectivity according to claim 5 is by cluster fracturing technology, it is characterised in that：The step
（4）In, each slug liquid measure is 1 ~ 1.5 infusion pipe column volumes, 260 ~ 400kg/m of sand concentration3。
7. shale gas reservoir horizontal well selectivity according to claim 6 is by cluster fracturing technology, it is characterised in that：The step
（6）In, sand concentration is improved if unsuccessful to 400 ~ 480kg/m3Continue next section of sand plug of infusion, continue if unsuccessful again plus
Enter higher concentration sand plug closure preforation tunnel until pit shaft reaches back-up sand in highest safe pressure or selection sleeve pipe and carried out closure
Pressure break cluster.
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| CN108756842A (en) * | 2018-04-24 | 2018-11-06 | 中国石油天然气股份有限公司 | A kind of staged fracturing reforming technology improving Oil in Super-low Permeability reservoir horizontal well well yield |
| CN108729913A (en) * | 2018-05-25 | 2018-11-02 | 西安闪光能源科技有限公司 | Controllable shock wave pre-cracking shale reservoir stratum method |
| CN108729913B (en) * | 2018-05-25 | 2022-05-13 | 西安闪光能源科技有限公司 | Controllable shock wave pre-cracking shale reservoir stratum method |
| CN109184651A (en) * | 2018-08-31 | 2019-01-11 | 中国石油大学(北京) | Infinite stages fracturing process is temporarily blocked up in water-jet segmentation |
| CN112177583A (en) * | 2019-07-01 | 2021-01-05 | 中国石油化工股份有限公司 | Close cutting fracturing method |
| CN112177583B (en) * | 2019-07-01 | 2022-07-05 | 中国石油化工股份有限公司 | Close cutting fracturing method |
| CN110905472A (en) * | 2019-10-29 | 2020-03-24 | 中国石油集团川庆钻探工程有限公司 | Method for determining real-time steering fracturing parameters based on composite temporary plugging system |
| CN110905472B (en) * | 2019-10-29 | 2021-10-22 | 中国石油集团川庆钻探工程有限公司 | Method for determining real-time steering fracturing parameters based on composite temporary plugging system |
| CN111927423A (en) * | 2020-09-07 | 2020-11-13 | 中国石油天然气集团有限公司 | Shale sand fracturing pump-stopping fracturing steering method |
| CN112983379A (en) * | 2021-04-06 | 2021-06-18 | 华美孚泰油气增产技术服务有限责任公司 | Method for controlling shale gas well balanced fracturing reformation |
| CN114382453A (en) * | 2021-11-29 | 2022-04-22 | 陕西彬长孟村矿业有限公司 | Staged fracturing process for horizontal ground well for preventing and treating coal mine rock burst |
| CN114233261A (en) * | 2021-12-23 | 2022-03-25 | 西南石油大学 | Method for realizing uniform transformation of oil and gas well by low-cost staged fracturing |
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