CN206617151U - Side tracked slim hole well barefoot completion fracturing strings - Google Patents
Side tracked slim hole well barefoot completion fracturing strings Download PDFInfo
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- CN206617151U CN206617151U CN201720294240.6U CN201720294240U CN206617151U CN 206617151 U CN206617151 U CN 206617151U CN 201720294240 U CN201720294240 U CN 201720294240U CN 206617151 U CN206617151 U CN 206617151U
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Abstract
The utility model is related to petroleum oil well completion fracturing technique field, more particularly, to a kind of side tracked slim hole well barefoot completion fracturing strings；Including the hanging packer from top to bottom set gradually, pressure difference sliding sleeve, set sliding sleeve and float shoe；It is arranged at intervals between the hanging packer and the pressure difference sliding sleeve between at least two open hole packers, open hole packer described in adjacent two and is provided with fracturing sliding bush；Wherein, the hanging packer is arranged at straight well section, the open hole packer, the fracturing sliding bush, the pressure difference sliding sleeve, it is described set sliding sleeve and the float shoe may be contained within lower curved section, the open hole packer is used to respectively treat that fractured interval is insulated；It is engaged by the open hole packer with the fracturing sliding bush and the pressure difference sliding sleeve to side tracked slim hole well bore hole staged fracturing completion, to solve setting of casing cementing quality, to be difficult to control, perforating and fracturing completion cost high, time-consuming, laborious and there is the technical problem of card tubing string risk.
Description
Technical field
The utility model is related to petroleum oil well completion fracturing technique field, more particularly, to a kind of side tracked slim hole well barefoot completion
Fracturing strings.
Background technology
With the development of oil field development technology, high angle hole or horizontal well have turned into raising oil while reducing well-digging input
The major measure of well capacity；And for the straight well that most of production capacities are relatively low or stopped production, in such straight well inwardly opened window side
The high angle hole or horizontal well for getting out reservoir near connection have become reduction input, improve the new tool of oil well productivity；And
The connection situation between connection situation and stratum internal fissure in order to preferably link up well and ground interlayer, generally uses and traps
Pipe, well cementation, the mode of perforating and fracturing completion are to side tracked slim hole well staged fracturing completion.
The process of setting of casing perforating and fracturing completion is：The tripping in sleeve pipe in bore hole, after well cementation at each interval of correspondence perforation,
Fracturing string is taken out after the completion of pressure break, pressure break.Setting of casing perforating and fracturing completion can be supported to stratum, can be to stratum after perforation
Manual zoning is carried out, but needs to take out from shaft bottom after the completion of carrying out the tubing string or instrument pressure break of pressure break or bores, if not taking out
Fracturing string causes hole diameter to reduce and the follow-up construction of pressure break etc. again of influence, and fracturing string enters well or exists when being taken out from well
, there is tubing string sand card risk during pressure break in blocking risk；Particularly window sidetracking slim-hole high angle hole or horizontal well are due to hole diameter
It is small, and the high angle hole or horizontal well got out for window sidetracking, carry out multistage point using the fracturing technology tubing string after well cementation perforation
Section pressing crack construction exist tubing string easily occur anti-flushing well after sand card, and sand card can only remove the corresponding packer of generation sand card interval with
On part, the position below packer position and packer can not remove blocking, the side of well workover can only be taken after occurring blocking
Formula takes out fracturing string, and cost is high, lose time, waste of manpower, the probability of success taken out are low.Moreover, slim hole well well cementation is difficult
Relatively spend greatly, quality is difficult to control.
Therefore, the utility model is badly in need of providing a kind of side tracked slim hole well barefoot completion staged fracturing pipe regarding to the issue above
Post.
Utility model content
The purpose of this utility model is to provide a kind of side tracked slim hole well barefoot completion fracturing strings, by described
Open hole packer be engaged with the fracturing sliding bush and the pressure difference sliding sleeve to side tracked slim hole well bore hole staged fracturing completion with
Solve setting of casing perforating and fracturing completion cost it is high, time-consuming, laborious and exist well cementation difficulty greatly, the technical problem of card tubing string risk.
A kind of side tracked slim hole well barefoot completion fracturing strings that the utility model is provided, including from top to bottom successively
The hanging packer that is arranged on oil pipe, pressure difference sliding sleeve, set sliding sleeve and float shoe；The hanging packer and the pressure difference sliding sleeve
Between be arranged at intervals between at least two open hole packers, open hole packer described in adjacent two and be provided with fracturing sliding bush；Wherein,
The hanging packer is arranged at straight well section, the open hole packer, the fracturing sliding bush, the pressure difference sliding sleeve, described sets
Sliding sleeve and the float shoe may be contained within lower curved section, and the open hole packer is used to respectively treat that fractured interval is insulated, and the pressure break is slided
Set and the pressure difference sliding sleeve are corresponded to respectively treats that fractured interval is set described in one.
Further, bore hole described at least three is arranged at intervals between the hanging packer and the pressure difference sliding sleeve to seal
Every device, the ball seat internal diameter of the fracturing sliding bush increases step by step from bottom to top.
Further, safe joint of slipping out of the hand is provided with above the hanging packer.
Further, the open hole packer is compression type open hole packer.
Further, the open hole packer is 31/2 open hole packer.
Further, the fracturing sliding bush is that can bore switchable sliding sleeve.
Further, the fracturing sliding bush is can bore switchable sliding sleeve, the sliding sleeve ball used cooperatively with the fracturing sliding bush
To can dissolve ball.
Further, the mode that sets of the hanging packer sets or rotated tubing string for handling tubing string and set.
A kind of side tracked slim hole well barefoot completion fracturing strings that the utility model is provided have compared with prior art
There is following progress：
1. the utility model uses the design of the hanging packer, the open hole packer and the fracturing sliding bush；With
The mode of barefoot completion carries out completion, without in lower curved section tripping in casing cementing after the completion of drilling well, with completion it is rapid, save when
Between, save material and production layer bare area be big, the resistance in fluid access wall is small advantage.The hanging packer is arranged at
Straight well section：Set on the internal surface of sleeve pipe of straight well section, internal surface of sleeve pipe is smooth compared with bore hole inside wall, can sit the hanging packer
Secure solid；Sleeve pipe can resist the formation collapse of small area, reduce because formation collapse and caused by set failure in addition influence
Later stage salvages the risk of workover treatment；The packing element of the hanging packer is by self-contained piston control, it is ensured that envelope that packing element is swollen is reliable, card
Firmly, and provided with resistance mechanism, the instrument that is hampered when entering well does not set to ensure that the utility model tubing string can be arrived smoothly down for watt grappling
Precalculated position.The packing element length of the open hole packer can be directly set on the borehole wall, realizing in 139mm casing window sidetracking wells
Interior selective completion, multi-section multi-layer separate zone stimulation.The open hole packer is set below each fracturing sliding bush, during pressure break,
Fracturing fluid prevents from accumulating sand in the mouth spray formation whirlpool of the fracturing sliding bush.
2. the utility model is using the design that safe joint of slipping out of the hand is provided with above the hanging packer, in lower tubular column mistake
Tubing string occurs in journey and meets card, or when sand card occurs for tubing string in fracturing process, top pressure break pipe can be completed by well head operation
Post is separated with quick slip out of the hand of the present utility model, is easy to quick progress subsequently to salvage or sand washing work, it is ensured that the peace of fracturing string
Complete and emergency processing.
3. the utility model uses the fracturing sliding bush to bore the design of switchable sliding sleeve；The ball seat of the fracturing sliding bush
It can bore and remove, sliding sleeve ball voluntarily can dissolve in well.Pressure break can be bored except the ball seat of the fracturing sliding bush when completing, and increased in tubing string
Footpath, is conducive to the later stage to carry out other constructions in tubing string, and the method removed using boring removes the ball seat construction of the fracturing sliding bush
Simply, rapidly, be conducive to quickly going into operation after the completion of pressure break.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Structural representation when Fig. 1 is the utility model pressure break two layers；
Structural representation when Fig. 2 is the utility model pressure break multilayer；
Structural representation when Fig. 3 is the utility model pressure break multilayer.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Embodiment one：
It is shown in Figure 1, the side tracked slim hole well barefoot completion fracturing strings that the present embodiment is provided, including by up to
Under be set in turn on oil pipe 8 hanging packer 1, pressure difference sliding sleeve 2, set sliding sleeve 3 and float shoe 4；The hanging packer with
It is arranged at intervals between the pressure difference sliding sleeve between two open hole packers 6, open hole packer described in adjacent two and is provided with pressure break
Sliding sleeve 5；Wherein, the hanging packer is arranged at straight well section, and the open hole packer, the fracturing sliding bush, the pressure difference are slided
Set, it is described set sliding sleeve and the float shoe may be contained within lower curved section or horizontal segment, the open hole packer is used to respectively treat pressure break
Interval is insulated, and the fracturing sliding bush and the pressure difference sliding sleeve correspond to treat that fractured interval is set described in one respectively.In the present embodiment
The open hole packer, which is used to insulate, treats that fractured interval is set described in adjacent two, its particular location is according to treating situation in fractured well well
It is determined that, those skilled in the art can determine that, no longer excessively repeat herein.
The utility model uses the design of the hanging packer, the open hole packer and the fracturing sliding bush；With naked
The mode of eye completion carries out completion, without in lower curved section tripping in casing cementing after the completion of drilling well, with completion it is rapid, save when
Between, save material and production layer bare area be big, the resistance in fluid access wall is small advantage.The hanging packer is arranged at
Straight well section：Set on the internal surface of sleeve pipe of straight well section, internal surface of sleeve pipe is smooth compared with bore hole inside wall, can sit the hanging packer
Secure solid；Sleeve pipe can resist the formation collapse of small area, reduce because formation collapse and caused by set failure in addition influence
Later stage salvages the risk of workover treatment；The packing element of the hanging packer is by self-contained piston control, it is ensured that envelope that packing element is swollen is reliable, card
Firmly, and provided with resistance mechanism, the instrument that is hampered when entering well does not set to ensure that the utility model tubing string can be arrived smoothly down for watt grappling
Precalculated position.The packing element length of the open hole packer can be directly set on the borehole wall, realizing in 139mm casing window sidetracking wells
Interior selective completion, multi-section multi-layer separate zone stimulation.The open hole packer is set below each fracturing sliding bush, during pressure break,
Fracturing fluid prevents from accumulating sand in the mouth spray formation whirlpool of the fracturing sliding bush.
It is shown in Figure 1, safe joint 7 of slipping out of the hand is provided with above hanging packer described in the present embodiment.
The utility model is using the design that safe joint of slipping out of the hand is provided with above the hanging packer, in lower tubular column process
Middle generation tubing string meets card, or when sand card occurs for tubing string in fracturing process, top fracturing string can be completed by well head operation
Separated with quick slip out of the hand of the present utility model, be easy to quick progress subsequently to salvage or sand washing work, it is ensured that the safety of fracturing string
And emergency processing.
It is shown in Figure 1, open hole packer described in the present embodiment be compression type open hole packer, and the bore hole insulate
Device is 31/2 compression type open hole packer；The packer has double compression type glue barrels, sealed reliable；And provided with resistance mechanism, enter
Well, which is hampered, not to be set；Set and take wedging plus compressed format, packing element is supported in rigidity after setting, increase sealing；It is provided with
Stepping double-locking mechanism, will not discharge after packing element compression；31/2 compression type open hole packer is prior art, its specific knot
Structure is no longer excessively repeated herein.
Open hole packer described in the present embodiment is 31/2 compression type open hole packer of " hundred million dragons " brand；Certainly can be with
Using 31/2 compression type open hole packer of " section is sharp ", the brand and model of the listed open hole packer are only described herein
The selectable brand of open hole packer and model, are not defined to its brand and model, and those skilled in the art can be with
The open hole packer of other brands and model is selected according to actual needs, is no longer excessively repeated herein.
Hanging packer described in this example is the hanging packer of " hundred million dragons " brand, herein listed suspension packing
The brand and model of device are only the selectable brand of the hanging packer and model, its brand and model are not limited
Fixed, those skilled in the art can select the hanging packer of other brands and model according to actual needs, herein not
Repeated after more.
Shown in Figure 1, fracturing sliding bush described in the present embodiment coordinates for that can bore switchable sliding sleeve with the fracturing sliding bush
The sliding sleeve ball used is that can dissolve ball.Ball seat is designed as porous in fracturing sliding bush described in the present embodiment, and milling material is bored using easy,
Bore except part is short, easily bore and remove after pressure；Inner surface is ceramic coated to do Wear-resistant Treatment；Sliding sleeve inwall is provided with boss and groove, with opening
Pass instrument is engaged, and boss two sides devise leaning angle, it is ensured that smoothly disengaged with switch.
Fracturing sliding bush described in the present embodiment is the pitching sliding sleeve of " hundred million dragon " brand, the herein listed fracturing sliding bush
Brand and model are only the selectable brand of the fracturing sliding bush and model, its brand and model are not defined, ability
The technical staff in domain can select the fracturing sliding bush of other brands and model according to actual needs, no longer excessive superfluous herein
State.
The utility model uses the fracturing sliding bush to bore the design of switchable sliding sleeve；The ball seat of the fracturing sliding bush can
Brill is removed, and sliding sleeve ball voluntarily can dissolve in well.Pressure break can be bored except the ball seat of the fracturing sliding bush when completing, and increased in tubing string
Footpath, is conducive to the later stage to carry out other constructions in tubing string, and the method removed using boring removes the ball seat construction of the fracturing sliding bush
Simply, rapidly, be conducive to quickly going into operation after the completion of pressure break.
Shown in Figure 1, pressure difference sliding sleeve described in the present embodiment is set corresponding to first layer fractured layer, the fracturing sliding bush
Set corresponding to second layer fractured layer, to make the pressure difference sliding sleeve and the fracturing sliding bush correspond respectively to the first layer pressure break
Layer, the second layer fractured layer, in the hanging packer, open hole packer, the fracturing sliding bush, described during with tubing string
Pressure difference sliding sleeve, it is described set to be provided between sliding sleeve and the float shoe be provided with oil pipe 8.
The utility model is slided using the hanging packer, the open hole packer, the fracturing sliding bush, the pressure difference
Set, described set the design that the oil pipe is provided between sliding sleeve and the float shoe；Oil pipe can be used to adjust adjacent two pressure break
The distance of Tool Room, makes the open hole packer effectively be arranged at the interval of needs packing, the fracturing sliding bush and the pressure
Poor sliding sleeve, which can be effectively correspondingly arranged in, each described treats fractured interval.
The mode that sets of hanging packer described in the present embodiment sets for handling tubing string, naturally it is also possible to which selection rotates pipe
Post is set or lower instrument sets one of them, the handling tubing string sets, rotate tubing string set or lower instrument to set be described
Hanging packer sets mode, can reach packer setting in the purpose in oil pipe, and those skilled in the art can be with
Any selection difference sets the hanging packer of mode according to actual needs, and difference sets the hanging packer of mode
General knowledge is known in the art, is no longer excessively repeated herein.
Embodiment two：
Side tracked slim hole well barefoot completion fracturing strings in embodiment are the improvement on the basis of embodiment one, real
The technology contents not repeated description disclosed in example one is applied, the disclosure of embodiment one falls within the present embodiment disclosure.
Referring to shown in Fig. 2, Fig. 3, the side tracked slim hole well barefoot completion fracturing strings that the present embodiment is provided are described
Multiple open hole packers 16, bore hole described in adjacent two are arranged at intervals between hanging packer 11 and the pressure difference sliding sleeve 12
Fracturing sliding bush 15 is provided between packer, each fracturing sliding bush is corresponded to respectively treats that fractured interval is set described in one, institute
The corresponding orlop fractured layer of pressure difference sliding sleeve 12 is stated, and the ball seat internal diameter of the fracturing sliding bush increases step by step from bottom to top.
The design of the present embodiment is applied to carry out multiple fracturing, the slim hole well for needing progress multiple fracturing, Ying Gen
According to the design for being actually needed one pressure difference sliding sleeve of selection and adding fracturing sliding bush, the quantity of the fracturing sliding bush be into
The number of plies of row pressure break subtracts one；Set to make the pressure difference sliding sleeve and each fracturing sliding bush correspond fractured layer, with tubing string
When the oil pipe of different length can be used to compensate, this is prior art, and those skilled in the art can carry out matching somebody with somebody design of string pipe,
No longer excessively repeat herein.
It is right so that application embodiment two of the present utility model carries out side tracked slim hole well barefoot completion staged fracturing as an example below
Pressing crack construction step is briefly described：
1) tubing string connection is carried out according to detail design；
2) precalculated position will be arrived under fracturing string using drilling rod or oil pipe；
3) well-flushing；
4) given up after setting the hanging packer, rise and to send into drilling rod or feeding oil pipe；
5) fracturing oil pipe, which is returned, inserts；
6) pressing crack construction is carried out：Dissolvable ball is thrown to the sliding sleeve that sets, 15MPa-20MPa is suppressed and sets positioned at orlop
The open hole packer after, continue to suppress to ball seat and come off, continue to suppress 35MPa-40MPa and open the pressure difference sliding sleeve and carry out
First fractured layer (treating fractured interval described in basecoat) pressure break；
Pitching again, suppressing makes the open hole packer for being located at the first fractured layer and the second pressure break interlayer continue to beat after setting
15MPa-20MPa is pressed, opens and is located at the undermost fracturing sliding bush, enter the second fractured layer pressure break；
Above-mentioned steps are repeated, layer is located at the pressure that fractured layer is treated described in most last layer by pressure break to completion from the bottom to top
Split.
7) rise and fracturing string,
8) bore except ball seat in sliding sleeve；
9) prepare to go into operation.
Specific construction example：
1st, construction well concrete condition
Certain oil recovery factory X puts down 6 wells, is window sidetracking minor diameter high angle hole, this well crude oil layer casing inner diameter 121.36mm, complete
Drilling well depth 2430m, casing setting depth 2400m, actual measurement cement return deep 1800m；The well is relatively low due to yield, is stopped production in January, 2014；
Oil recovery factory carries out window sidetracking in April, 2015：Target spot A is designed in height above sea level -1439.6m, vertical depth 2169m.A points are away from well head level
Displacement 200m, well head to target spot A azimuth are about 17.0 °；Target spot B design height above sea level is -1620.6m, vertical depth 2350m.Target spot
B is 300m away from well head horizontal displacement, and azimuth is about 17.0 °；Horizontal displacement 100m between target spot A, B；Drop angle is bored after middle A target spots
Proceed to target spot B.
2nd, well completion design
3rd, fracturing technology scheme
1) suppress to 35-40MPa and open pressure difference sliding sleeve, by the design interval of pressure break first；
2) pitching is pumped to switching sliding sleeve, suppresses 10-15MPa and opens switching sliding sleeve, according to FRACTURING DESIGN pair；
3) the second pressure break；
4) operation completion the 3rd, the 4th section of pressing crack construction more than；
5) ball seat is removed with continuous tubing drill；
6) gaslift is gone into operation.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (8)
1. a kind of side tracked slim hole well barefoot completion fracturing strings, it is characterised in that including being from top to bottom set in turn in
Hanging packer, pressure difference sliding sleeve on oil pipe, set sliding sleeve and float shoe；Between between the hanging packer and the pressure difference sliding sleeve
Fracturing sliding bush is provided with every being provided between at least two open hole packers, open hole packer described in adjacent two；Wherein, it is described outstanding
Hang packer be arranged at straight well section, the open hole packer, the fracturing sliding bush, the pressure difference sliding sleeve, it is described set sliding sleeve and
The float shoe may be contained within lower curved section, and the open hole packer is used to respectively treat that fractured interval is insulated, the fracturing sliding bush and institute
State pressure difference sliding sleeve respectively correspond to one described in treat fractured interval set.
2. side tracked slim hole well barefoot completion fracturing strings according to claim 1, it is characterised in that the suspension envelope
Open hole packer described at least three, the ball seat internal diameter of the fracturing sliding bush are arranged at intervals between device and the pressure difference sliding sleeve
Increase step by step from bottom to top.
3. side tracked slim hole well barefoot completion fracturing strings according to claim 2, it is characterised in that the suspension envelope
Safe joint of slipping out of the hand is provided with above device.
4. according to any side tracked slim hole well barefoot completion fracturing strings in claim 1-3, it is characterised in that institute
Open hole packer is stated for compression type open hole packer.
5. side tracked slim hole well barefoot completion fracturing strings according to claim 4, it is characterised in that the bore hole envelope
Every device be 31/2 open hole packer.
6. according to any side tracked slim hole well barefoot completion fracturing strings in claim 1-3, it is characterised in that institute
Fracturing sliding bush is stated to bore switchable sliding sleeve.
7. side tracked slim hole well barefoot completion fracturing strings according to claim 5, it is characterised in that the pressure break is slided
It is that can dissolve ball to cover the sliding sleeve ball for that can bore switchable sliding sleeve, used cooperatively with the fracturing sliding bush.
8. side tracked slim hole well barefoot completion fracturing strings according to claim 7, it is characterised in that the suspension envelope
Set or rotate tubing string for handling tubing string every the mode that sets of device and set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294240.6U CN206617151U (en) | 2017-03-24 | 2017-03-24 | Side tracked slim hole well barefoot completion fracturing strings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294240.6U CN206617151U (en) | 2017-03-24 | 2017-03-24 | Side tracked slim hole well barefoot completion fracturing strings |
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| CN206617151U true CN206617151U (en) | 2017-11-07 |
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| CN108049859A (en) * | 2017-12-04 | 2018-05-18 | 中国石油天然气股份有限公司 | Method for realizing staged fracturing of sidetracking slim hole |
| CN108979583A (en) * | 2018-07-12 | 2018-12-11 | 马弘毅 | A kind of sidetracked hole layer and section cementing unit and application method |
| CN109162665A (en) * | 2018-07-12 | 2019-01-08 | 马弘毅 | A kind of sidetracked hole layer and section cementing unit |
| CN109403943A (en) * | 2018-09-26 | 2019-03-01 | 中国石油天然气股份有限公司 | Staged fracturing method for 3-inch half sidetracking horizontal well |
| CN110005388A (en) * | 2019-02-11 | 2019-07-12 | 中国石油天然气股份有限公司 | Fracturing and yield increasing method for 3-inch semi-slim well side drilling of ultra-low permeability oil reservoir |
| CN110082181A (en) * | 2019-05-10 | 2019-08-02 | 重庆大学 | The tilted pre- perforating system of cube protolith sample drilling and pre-firing hole forming method |
| CN110359896A (en) * | 2019-08-05 | 2019-10-22 | 中国石油集团长城钻探工程有限公司 | A kind of dual-lateral well fracturing technology method |
| CN110821433A (en) * | 2019-12-27 | 2020-02-21 | 胜利油田高原石油装备有限责任公司 | Radial windowing and drilling device for underground casing of oil-water well |
| CN111472690A (en) * | 2020-04-03 | 2020-07-31 | 中国石油天然气股份有限公司 | Sidetracking well completion method |
| CN112211601A (en) * | 2020-11-05 | 2021-01-12 | 中国石油天然气股份有限公司 | Coiled tubing and packer combined staged fracturing string for slim-hole well and method |
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Effective date of registration: 20211011 Address after: 100218 807, floor 8, building 1, 186 Litang Road, Dongxiaokou Town, Changping District, Beijing Patentee after: BEIJING JINSHENG'AO ENERGY TECHNOLOGY Co.,Ltd. Address before: 750200 No. 1-3, family courtyard, Qiaodong commercial bureau, East Street, Helan County, Yinchuan City, Ningxia Hui Autonomous Region Patentee before: Feng Zhiqiang |