CN105672978A - Horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method - Google Patents

Horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method Download PDF

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Publication number
CN105672978A
CN105672978A CN201610181498.5A CN201610181498A CN105672978A CN 105672978 A CN105672978 A CN 105672978A CN 201610181498 A CN201610181498 A CN 201610181498A CN 105672978 A CN105672978 A CN 105672978A
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well
horizontal
horizontal well
parallel
water injection
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CN201610181498.5A
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Inventor
赵继勇
张瀚丹
谢启超
丁黎
孙栋
樊建明
刘建
王博
刘强
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201610181498.5A priority Critical patent/CN105672978A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30Specific pattern of wells, e.g. optimizing the spacing of wells
    • E21B43/305Specific pattern of wells, e.g. optimizing the spacing of wells comprising at least one inclined or horizontal well
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/17Interconnecting two or more wells by fracturing or otherwise attacking the formation
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20Displacing by water
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25Methods for stimulating production
    • E21B43/26Methods for stimulating production by forming crevices or fractures

Abstract

The invention provides a horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method. The horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method comprises the following steps of (1) determining a stratum suitable for the horizontal displacement type five-point horizontal well three-dimensional well pattern distributing, and selecting a target implementing layer of horizontal wells; (2) implementing a water injection well; (3) drilling a first horizontal well; (4) drilling a second horizontal well; (5) according to the thickness of a reservoir, increasing the number of horizontal wells along the horizontal direction; (6) cracking the horizontal wells; (7) injecting water by layers. The horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method has the advantages that by arranging the horizontal displacement and cracking staggering of the upper and lower horizontal wells, the horizontal displacement type five-point horizontal well three-dimensional well pattern distributing type is formed; an oil layer can be sufficiently utilized, the effect of multiple horizontal layers sharing one set of water injection well pattern is realized, and the influence to the cracking effect by the interlayer communicating of gaps of the adjacent upper and lower horizontal wells in the oil testing process of oil drilling is avoided.

Description

A kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type
Technical field
The invention belongs to oil development technical field, be specifically related to a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type.
Background technology
The petroleum reserves scale of domestic low-permeability oil deposit accounts for the 1/4 of petroleum total reserve, incremental reserves account in the petroleum-in-place verified then more than 60% to 70%, reserves scale is big, but is difficult to exploitation. Ordos Basin is due to Compacted rock, fluid flow difficulties, pressure conduction ability, generally stratum energy is all not enough, oil well natural production capacity is low, iff relying on natural energy exploitation, after bringing in, strata pressure declines fast, production decline is big, primary recovery rate is very low, and after the reduction of pressure, yield, recovery is got up very difficult. Waterflooding extraction makes strata pressure remain higher level, sets up effective displacement pressure system, improves hyposmosis compact oil reservoir development effectiveness. And horizontal well development can be effectively increased drainage area, increase conductivity, and be easier to the intrinsic fracture running through in reservoir, solve the problem that hyposmosis compact oil reservoir well yield is low, be effectively improved rate of oil production.
Within 2010, beginning at Ordos Basin and carry out the development experiments of horizontal well production straight well water filling five-spot pattern, mining site practice have shown that, hyposmosis compact oil reservoir adopt straight well water filling supplement energy, horizontal well production development scheme effect better. But this development scheme is only applicable to the list set oil sheet of about 10m, and rate of oil production can reach 0.8%~1%. To thick oil pay or multiple zone folded type oil reservoir, adopt mono-layer level well development, it is difficult to employ oil reservoir completely, and rate of oil production is low, only 0.3%~0.5%. From literature survey situation, currently without the research for such reservoir horizontal well development scheme. In order to better develop thick oil pay and multiple zone folded type oil reservoir, 5 horizontal well solid well pattern well spacing new methods of parallel-moving type are invented.
Summary of the invention
It is an object of the invention to provide a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type, better to develop thick oil pay and multiple zone folded type oil reservoir.
Technical scheme:
A kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type, comprise the following steps:
Step 1) determines the reservoir condition being suitable for disposing 5 horizontal well solid well pattern well spacing of parallel-moving type, selects this interval as the target implementation level of horizontal well;
Step 2) first implement first water injection well, according to region biggest principal stress direction as well array direction, interval 500m well spacing, implement second mouthful of water injection well, then from first water injection well water filling, the vertical direction 1000m place along maximum principal stress implements the 3rd mouthful of water injection well, from the 3rd mouthful of water injection well, implement the 4th mouthful of water injection well along 500m place, biggest principal stress direction interval, water injection well to drill the oil reservoir preparing carrying out horizontal well completely;
Step 3) is with first water injection well for zero, 275~290m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of first horizontal well the first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of first horizontal well;
Step 4) is with first water injection well for zero, 210~225m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of second mouthful of water horizontal well first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of second mouthful of water horizontal well;
When step 5) reservoir situation in the vertical meets the reservoir condition being suitable for deployment 5 horizontal well solid well pattern well spacing of parallel-moving type in step 1), increasing the quantity of horizontal well in longitudinal direction, plane coordinates is used alternatingly the coordinate of first horizontal well the first target spot and second mouthful of water horizontal well first target spot to be continued to implement;
Step 6) fractured horizontal well;
Step 7) water injection well after each horizontal well correspondence interval perforating and fracturing, the intersegmental packer set of each perforation, implement seperated layer water injection.
Determine described in step 1) that the process being suitable for disposing the oil reservoir of 5 horizontal well solid well pattern well spacing of parallel-moving type is as follows:
(1) judge whether oil reservoir is multiple zone folded type or thick oil pay form;
(2), in multiple zone folded type situation, shale is stably grown every interlayer, every thickness of interlayer be more than or equal to 20m; Thick oil pay form is without in interlayer situation, and core intersection is be more than or equal to 40m.
The well spacing of described first horizontal well and second mouthful of water horizontal well is 500m.
Step 3) and step 4) in be 600m along the length of the vertical direction carrying out horizontal section of maximum principal stress.
During step 6) fractured horizontal well, during pressure break, answer simultaneous construction with group horizontal well.
During step 6) fractured horizontal well, distance is staggered mutually for 20-30m in the pressure break position of adjacent two layers horizontal well.
600m fractured horizontal well seam hop count is 12 sections, and fracturing fracture density is 1/50m.
Described 12 sections of cracks seam long respectively 100m, 110m, 120m, 130m, 130m, 140m, 140m, 130m, 130m, 120m, 110m, 100m.
Described fracture pattern is spindle-type.
The invention has the beneficial effects as follows: 5 horizontal well solid well pattern well-arranging procedure of this parallel-moving type provided by the invention, by arrange levels horizontal well horizontal displacement and with pressure break intervening portion, form 5 horizontal well patterns solid hole patterns of parallel-moving type, both oil reservoir can fully have been employed, reach again multilayer water horizontal well and share a set of injection pattern, when being also prevented from drilling well formation testing, neighbouring horizontal well crack is linked up and is altered layer, affects fracturing effect.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is 5 horizontal well solid well patterns of parallel-moving type and element floor map;
Fig. 2 is along 5 horizontal well solid well pattern longitudinal profile schematic diagrams of horizontal well pit shaft direction multiple zone folded type parallel-moving type:
Fig. 3 is along 5 horizontal well solid well pattern longitudinal profile schematic diagrams of horizontal well pit shaft tangential direction multiple zone folded type parallel-moving type:
Fig. 4 is along 5 horizontal well solid well pattern longitudinal profile schematic diagrams of horizontal well pit shaft direction thick oil pay parallel-moving type;
Fig. 5 is along 5 horizontal well solid well pattern longitudinal profile schematic diagrams of horizontal well pit shaft tangential direction thick oil pay parallel-moving type.
In figure: 1, water injection well; 2, well spacing; 3, array pitch; 4, upper water horizontal well; 5, pressure-break net; 6, lower layer of water horizontal well; 7, every interlayer; 8, oil reservoir; A, horizontal well and water injection well vertical line distance farther out; B, horizontal well and nearer water injection well vertical line distance; Translation distance in c, adjacent layer horizontal well plane; D, adjacent two layers horizontal well pressure break position mutually stagger distance.
Detailed description of the invention
Embodiment 1:
Present embodiments provide 5 horizontal well solid well pattern well-arranging procedure of a kind of parallel-moving type as shown in Figure 1, comprise the following steps:
Step 1) determines the reservoir condition being suitable for disposing 5 horizontal well solid well pattern well spacing of parallel-moving type, selects this interval as the target implementation level of horizontal well;
Step 2) first implement first water injection well, according to region biggest principal stress direction as well array direction, interval 500m well spacing, implement second mouthful of water injection well, then from first water injection well water filling, the vertical direction 1000m place along maximum principal stress implements the 3rd mouthful of water injection well, from the 3rd mouthful of water injection well, implement the 4th mouthful of water injection well along 500m place, biggest principal stress direction interval, water injection well to drill the oil reservoir preparing carrying out horizontal well completely;
Step 3) is with first water injection well for zero, 275~290m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of water first horizontal well the first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of first horizontal well;
Step 4) is with first water injection well for zero, 210~225m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of second mouthful of water horizontal well first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of second mouthful of water horizontal well;
When step 5) reservoir situation in the vertical meets the reservoir condition being suitable for deployment 5 horizontal well solid well pattern well spacing of parallel-moving type in step 1), increasing the quantity of horizontal well in longitudinal direction, plane coordinates is used alternatingly the coordinate of first horizontal well and second mouthful of water horizontal well first target spot to be continued to implement;
Step 6) fractured horizontal well;
Step 7) water injection well after each horizontal well correspondence interval perforating and fracturing, the intersegmental packer set of each perforation, implement seperated layer water injection.
Step 5) longitudinally above increases the quantity of horizontal well, the oily number of stories m being suitable for disposing the reservoir condition of 5 horizontal well solid well pattern well spacing of parallel-moving type is met with longitudinally upper reservoir situation, and the horizontal well number n of lower floor's oil reservoir is relevant, namely longitudinally the upper quantity increasing horizontal well is mn.
In order to when effectively preventing from constructing, pressure-break alters layer, and not affecting well multilamellar water filling, the horizontal well of 5 horizontal-well network of parallel-moving type and both sides water injection well 1 are apart from Unequal distance, and the upper and lower two-layer of horizontal well can not be completely superposed simultaneously. according to oil reservoir between Horizontal Well 8 thickness with every interlayer 7 thickness and horizontal well interlayer physical property difference, as shown in Figure 1, horizontal well and nearer water injection well vertical line distance b are 225m~210m, horizontal well is 275m~290m with water injection well vertical line distance a farther out, upper water horizontal well 4 and lower layer of water horizontal well 6 are 50m~80m along principal direction of stress displacement, namely in adjacent layer horizontal well plane, translation distance c is 50m~80m, (core intersection is more big, horizontal well interval physical property difference is more little or more thick every thickness of interlayer, principal direction of stress displacement it is parallel to more little between horizontal well, horizontal well is the closer to 2 mouthfuls of water injection well axis, in Fig. 1, pressure-break net 5 middle conductor length represents the length in crack.So both can having set up effective displacement pressure system, when preventing again pressure break, levels horizontal well pressure is altered.
Embodiment 2:
On the basis of embodiment 1, present embodiments provide a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type, wherein, described in step 1), determine that the process being suitable for disposing the oil reservoir 8 of 5 horizontal well solid well pattern well spacing of parallel-moving type is as follows:
(1) judge whether oil reservoir 8 is multiple zone folded type or thick oil pay form;
(2), in multiple zone folded type situation, shale is every the stable growth of interlayer 7, every interlayer 7 thickness be more than or equal to 20m; Thick oil pay form is without in interlayer situation, and oil reservoir 8 thickness is be more than or equal to 40m.
The well spacing of first horizontal well and second mouthful of water horizontal well is 500m. According to reservoir engineering demonstration and numerical simulation study, putting into practice in conjunction with mining site, Horizontal Well is 500m from 2, and when array pitch 3 is 200m, development effectiveness is optimum.
Step 3) and step 4) in be 600m along the length of the vertical direction carrying out horizontal section of maximum principal stress. Proved by reservoir numerical simulation research: when water injection technology policy, production well proration are identical with artificial fracture density, it is higher that five-spot pattern has well yield, identical containing under water, the advantage that recovery percent of reserves is high. According to parameter economic evaluations such as individual well integrated cost, development index predication, it is determined that five-spot pattern optimum horizontal interval length respectively 600m.
During step 6) fractured horizontal well, during pressure break, answer simultaneous construction with group horizontal well.
During step 6) fractured horizontal well, the pressure break position of the adjacent two layers horizontal well distance d that mutually staggers is 20-30m, it is possible to prevent pressure-break from altering layer further.
600m fractured horizontal well seam hop count is 12 sections, and fracturing fracture density is 1/50m; Fracture pattern is spindle-type; Seam seam long respectively 100m, 110m, 120m, 130m, 130m, 140m, 140m, 130m, 130m, 120m, 110m, 100m.
Embodiment 3:
On the basis of embodiment 1,5 horizontal well solid well pattern well spacing new methods of parallel-moving type of the present invention are achieved good development effectiveness at Ordos Basin Ji's plateau length 6 multiple zone superposition oil reservoir block.
Ji's plateau oil field Chang-6 oil reservoir block main sedimentary system type is lacustrine deltaic deposit system, and sedimentary micro has gulf, estuary dam, under water natural levee, subaqueous crevasse splay, Long-term therapy, sheet sand etc. between distributary channel, shunting. Long 6 can be divided into six substratums, each substratum all grows the main distributary channel of 6-8 bar, and in deposition process, sand body forms large-scale combination Reservoir Body type to cut folded mode and lateral accretion mode, on section sand body present between sand mud, the feature of alternating layers or mud drum sand, be easily formed physical property interlayer. There is obvious mud stone every interlayer in major oil reservoir length 612 and long 622 interlayers, on average every thickness of interlayer 20m, belongs to typical stratiform lithological pool. Major oil reservoir monolayer core intersection is 12.5m, and average pore is 11.3%, mean permeability 0.32mD, and physical property is poor, is suitable for the exploitation of 5 horizontal well solid well patterns of parallel-moving type, such as Fig. 2, multiple zone folded type parallel-moving type horizontal well longitudinal direction schematic diagram in 3.
Apply 5 well well patterns of parallel-moving type (2 floor) finishing drilling horizontal well 53 mouthfuls altogether in this district, bore 27 mouthfuls of well less, save drilling depth 6.89 myriametre, save drilling well and invest 86,650,000 yuan. Drilled well number in individual well field is brought up to 3~4 mouthfuls by 1~2 mouthful, Economization on land 397.5 mu, and average water horizontal well shortens and shortened to 19 days by 24 days well construction period.Average examination row's day oil-producing 23.1m3, the equal well yield 7.5t/d of initial stage well after operation, moisture 48.3%, yield is 4~6 times of adjacent area straight well, and rate of oil production is brought up to 1.1% by 0.42%, and implementation result is notable.
Embodiment 4:
The present embodiment is applied to Hua Qingchang 6 thick oil pay oil reservoir block, and China's celebrating ground certain block of the head of district 6 belongs to turbidite fan deposition sedimentary system under water, and Main Reservoirs facies tract is turbidity channel microfacies. With long 63 for major oil reservoir, core intersection 40.7m, in longitudinal direction, oil reservoir is continuous, every interlayer aplasia, in plane, property is strong in flakes, porosity 11.9%, permeability 0.32mD, is suitable for using the exploitation of 5 horizontal well solid well patterns of parallel-moving type such as Fig. 4, thick oil pay parallel-moving type horizontal well longitudinal direction schematic diagram in 5.
Apply parallel-moving type 5 well well patterns (2 floor) finishing drilling horizontal well 17 mouthfuls in this district, bore 8 mouthfuls of well less, save drilling depth 1.74 myriametre, save drilling well and invest 2188 yuan. Drilled well number in individual well field is brought up to 3~4 mouthfuls by 1~2 mouthful, Economization on land 127.5 mu, and average water horizontal well shortens and shortened to 17 days by 22 days well construction period. Complete examination horizontal well 17 mouthfuls, individual well on average produces pure oil 45.5t daily; Operation oil well 17 mouthfuls, day at initial stage oil-producing 6.3t/d, moisture 49.8%, yield is 4~6 times of adjacent area straight well, and rate of oil production is brought up to 0.98% by 0.38%, and implementation result is notable.
In sum, 5 horizontal well solid well pattern well-arranging procedure of this parallel-moving type provided by the invention, by arrange levels horizontal well horizontal displacement and with pressure break intervening portion, form 5 horizontal well patterns solid hole patterns of parallel-moving type, both oil reservoir can fully have been employed, reach again multilayer water horizontal well and share a set of injection pattern, it is also possible to when preventing drilling well formation testing, neighbouring horizontal well crack is linked up and altered layer, affects fracturing effect.
Exemplified as above is only illustration to the present invention, is not intended that the restriction to protection scope of the present invention, every belongs within protection scope of the present invention with the same or analogous design of the present invention.

Claims (9)

1. 5 horizontal well solid well pattern well-arranging procedure of a parallel-moving type, it is characterised in that comprise the following steps:
Step 1) determines the reservoir condition being suitable for disposing 5 horizontal well solid well pattern well spacing of parallel-moving type, selects this interval as the target implementation level of horizontal well;
Step 2) first implement first water injection well, according to region biggest principal stress direction as well array direction, interval 500m well spacing, implement second mouthful of water injection well, then from first water injection well water filling, the vertical direction 1000m place along maximum principal stress implements the 3rd mouthful of water injection well, from the 3rd mouthful of water injection well, implement the 4th mouthful of water injection well along 500m place, biggest principal stress direction interval, water injection well to drill the oil reservoir preparing carrying out horizontal well completely;
Step 3) is with first water injection well for zero, 275~290m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of first horizontal well the first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of first horizontal well;
Step 4) is with first water injection well for zero, 210~225m is translated along biggest principal stress direction, vertically moveable 200m along maximum principal stress, the coordinate obtained is as the coordinate of second mouthful of water horizontal well first target spot, from this along the vertical direction carrying out horizontal section of maximum principal stress, complete the drilling well of second mouthful of water horizontal well;
When step 5) reservoir situation in the vertical meets the reservoir condition being suitable for deployment 5 horizontal well solid well pattern well spacing of parallel-moving type in step 1), increasing the quantity of horizontal well in longitudinal direction, plane coordinates is used alternatingly the coordinate of first horizontal well the first target spot and second mouthful of water horizontal well first target spot to be continued to implement;
Step 6) fractured horizontal well;
Step 7) water injection well after each horizontal well correspondence interval perforating and fracturing, the intersegmental packer set of each perforation, implement seperated layer water injection.
2. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: determine described in step 1) that the process being suitable for disposing the oil reservoir (8) of 5 horizontal well solid well pattern well spacing of parallel-moving type is as follows:
(1) judge whether oil reservoir (8) is multiple zone folded type or thick oil pay form;
(2) in multiple zone folded type situation, shale is stably grown every interlayer, every interlayer (7) thickness be more than or equal to 20m; Thick oil pay form is without in interlayer situation, and oil reservoir (8) thickness is be more than or equal to 40m.
3. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: the well spacing (2) of described first horizontal well and second mouthful of water horizontal well is 500m.
4. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: step 3) and step 4) in be 600m along the length of the vertical direction carrying out horizontal section of maximum principal stress.
5. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: during step 6) fractured horizontal well, during pressure break, answer simultaneous construction with group horizontal well.
6. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: during step 6) fractured horizontal well, staggering mutually apart from (d) in the pressure break position of adjacent two layers horizontal well is 20-30m.
7. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 1, it is characterised in that: 600m fractured horizontal well seam hop count is 12 sections, and fracturing fracture density is 1/50m.
8. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 7, it is characterised in that: described 12 sections of cracks seam long respectively 100m, 110m, 120m, 130m, 130m, 140m, 140m, 130m, 130m, 120m, 110m, 100m.
9. a kind of 5 horizontal well solid well pattern well-arranging procedure of parallel-moving type according to claim 8, it is characterised in that: described fracture pattern is spindle-type.
CN201610181498.5A 2016-03-28 2016-03-28 Horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method Pending CN105672978A (en)

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CN106930747B (en) * 2017-01-24 2019-01-08 核工业北京化工冶金研究院 A kind of ground-dipping uranium extraction well net optimization recombination method
CN109386268A (en) * 2017-08-03 2019-02-26 中国石油化工股份有限公司 A kind of oil-gas reservoir reservoir fracturing method
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CN111173492A (en) * 2020-01-03 2020-05-19 中国石油化工股份有限公司 Differential well spacing adaptation method for double-control diamond well pattern
CN111173492B (en) * 2020-01-03 2022-02-22 中国石油化工股份有限公司 Differential well spacing adaptation method for double-control diamond well pattern
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CN112302608B (en) * 2020-10-23 2023-02-10 中国石油天然气股份有限公司 Horizontal well before-pressure injection fluid development method based on three-dimensional fracturing well pattern
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