CN104563860A - Double-stage double-rotating-speed well drilling device - Google Patents
Double-stage double-rotating-speed well drilling device Download PDFInfo
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- CN104563860A CN104563860A CN201310510843.1A CN201310510843A CN104563860A CN 104563860 A CN104563860 A CN 104563860A CN 201310510843 A CN201310510843 A CN 201310510843A CN 104563860 A CN104563860 A CN 104563860A
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- assembly
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
Abstract
The invention relates to a double-stage double-rotating-speed well drilling device, and belongs to the industrial fields of oil and gas well drilling, geological prospecting, mine drilling, coal-bed gas development and the like. The double-stage double-rotating-speed well drilling device comprises an outer shell 1, a power assembly 2, a universal shaft coupling 3, a central shaft 4, a variable-speed reversing input assembly 6, a variable-speed reversing conversion assembly 8, a variable-speed reversing output assembly and a secondary drill bit and primary drill bit joint. The device is arranged on the lower part of a shaft bottom drilling tool combination, a small-sized guide hole is drilled according to the characteristic of high rock breaking speed of a primary small drill bit, and a part of the stress of rock is released, so that the rock breaking difficulty of a secondary large-sized drill bit is lowered, the overall well drilling speed is increased, and the control of a well deviation direction and stick-slip vibration is facilitated; the double-stage double-rotating-speed well drilling device has important practical significance to increase of the drilling speed of deep wells and super deep wells and prolonging of the service lives of a drill stem and drill bits. Meanwhile, the double-stage double-rotating-speed well drilling device further has the advantages of simple structure, convenience in operation, convenience in installation, safety and reliability.
Description
Technical field
The present invention relates to the two rotating speed drilling rig of a kind of twin-stage, belong to oil and gas well drilling, CBM Drilling, geological prospecting, drilling equipment field, mine.
Background technology
Along with the fast development of increasing and the drilling technology day by day of oil-gas field development difficulty, the requirement of oil gas field to drilling speed grows with each passing day, particularly deep-well, ultradeep well, complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) quantity constantly increases, in drilling process, along with the increase of drilling well well depth, not only drilling fluid column pressure aggravates shaft bottom chip hold down effect, and the intensity of formation rock self, vertically stress, the flatly corresponding increase such as stress, formation rock drillability is deteriorated, rate of penetration is caused to reduce, not only have impact on the control of wellbore quality, and badly influence drilling period and the drilling cost of full well.
Drilling practice shows, twin-stage drilling technology utilizes the little drill bit of the first order to break the high feature of rock speed and gets out a small size and lead eye, then when large-size drill bit in the second level breaks rock, because the part stress of rock discharges, thus reduce the difficulty that large-size drill bit breaks rock, the overall rate of penetration of well being improved, and also having certain positive role for the control of direction of deflection and drilling tool stick slip vibration, is a kind of more satisfactory drilling technology.Patent 201210011193.1 mentions a kind of twin-stage double-speed well drilling tool, although this structure achieves the function that twin-stage bores first two rotating speed, but still there is some deficiency following, can not meet the requirement of on-the-spot drilling technology completely.(1) second level drill bit is connected with drill string, and rotary power and moment of torsion are provided by ground, and the broken rock rotating speed expanded reach of second level drill bit is limited; (2) two-stage drill bit turns to identical, can not realize the effect (bottom rock compressive strength > shear strength > tensile strength, therefore shearing-crushing is more conducive to the fragmentation of rock) of two-stage drill bit shearing-crushing rock; (3) two-stage drill bit cutting speed difference is large, causes two-stage drill bit the pressure of the drill unreasonable distribution, is difficult to play drilling bit high-speed and cuts the advantage of creeping into, very easily cause two-stage drill bit to wear and tear unbalanced, affect overall bit speed; (4) process specifications of slide drilling in complex structural well drilling process can not be met; (5) stick slip vibration of direction of deflection and drill string can not effectively be controlled.Therefore a kind of actual requirement that can meet on-the-spot drilling technology of design is badly in need of, and structure is simple, dependable performance, control accuracy is high, and the two rotating speed drilling rig of easy to operate downhole double-stage, gives full play to the advantage of twin-stage drilling technology, reduce the impact of drillstring vibrations, improve the control accuracy of well track, extend the application life of drill string and drill bit, meet the effect of technical requirements oil-gas field development puies forward to(for) drilling engineering.
Summary of the invention
The object of the invention is to play the advantage of twin-stage drilling technology in deep-well, ultra-deep well drilling process to greatest extent, while raising rate of penetration shortens drilling period reduction integrated cost, the harm reducing shaft bottom stick slip vibration improves the control of direction of deflection, extend the application life of drill string and drill bit, provide a kind of twin-stage two rotating speed drilling rig.
Technical scheme of the present invention is:
The two rotating speed drilling rig of a kind of twin-stage comprises shell body 1, power assembly 2, Hooks coupling universal coupling 3, central axis 4, speed change commutation input assembly 6, speed change commutation conversion assembly 8, speed change commutation exports assembly and secondary drill bit, one-level bit adapter, wherein: power assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, central axis 4 top is processed with by-pass prot 5, one-level bit adapter 19 is connected to central axis 4 lower end, speed change commutation input assembly 6 is fixedly connected with central axis 4, speed change commutation conversion assembly 8 is arranged in shell body 1 by axis of rotation 9, speed change commutation exports assembly 10 and is fixedly connected with secondary drill bit 16, speed change commutation input assembly 6 and speed change commutates and change assembly 8 and coordinate, and speed change commutates and changes assembly 8 and speed change and commutate and export assembly 10 and coordinate, secondary drill bit 16 with all form rotatory sealing between shell body 1 and central axis 4 and coordinate.
Such scheme also comprises:
Speed change commutation input assembly 6 and speed change commutate and change assembly 8 and speed change and commutate and change assembly 8 and speed change and commutate and export assembly 10 and be Alveolus type and coordinate.
Install pressure-loaded bearing 14 between shell body 1 and secondary drill bit 16, one-level bit adapter 19 and speed change commutate to export between assembly 10 and install pressure-loaded bearing 18, and one-level bit adapter 19 outer wall and secondary drill bit 16 inwall are all inlaid with wear plate, cross-shaped arrangement.
Design between speed change commutation output assembly 10 and shell body 1 inwall and be processed with oil storage tank 11, in oil storage tank 11, be sealed with the lubrication oil of high temperature high voltage resistant.
Between secondary drill bit 16 and shell body 1, speed change commutate export assembly 10 and between shell body 1 and central axis 4, speed change commutates and to input between assembly 6 and shell body 1 mounting sealing device 12,13,17 and 7 respectively, speed change commutation exports between assembly 10 and central axis 4 and installs bearing 15.
Speed change commutation input assembly 6, speed change commutation change assembly 8, speed change commutation output assembly 10 teeth groove than being multiple combination adjustment structure.
The two rotating speed drilling rig of twin-stage of the present invention is arranged on drilling assembly bottom, can conventional bit or special drill bit be connected on one-level bit adapter, during drilling well, drilling fluid drives power assembly to rotate, power assembly drives central axis by Hooks coupling universal coupling, central axis drives speed change commutation input assembly to rotate, speed change commutation input assembly drives speed change commutation conversion assembly to rotate, speed change commutation conversion assembly drives speed change commutation to export assembly and rotates, speed change commutation exports assembly and drives secondary bit, now secondary drill bit turn to different from central axis, according to down-hole actual condition, processing many covers speed change commutation input assembly can be designed, speed change commutation conversion assembly, speed change commutation exports the combination of assembly, thus can conveniently realize secondary drill speed and one-level drill speed is identical or different, meet the broken rock requirement of different subsurface environment.
Drilling fluid, after power assembly, arrives one-level drill bit through central axis by-pass prot, and is sprayed by the hydrophthalmia on one-level drill bit, completes bottom-hole cleaning landwaste, function such as cooling one-level, secondary drill bit etc., and enters on annular space and return to ground.Theoretical values simulation and laboratory experiment result show, rock is also broken in one-level drill bit leading secondary bit contact shaft bottom, and size is less, efficiency of breaking rock is high, institute's energy requirement is little, because the part stress in bottom rock is discharged, thus reduce the broken rock difficulty of secondary large-size drill bit, two-stage drill bit turns on the contrary simultaneously, achieve the effect of torsional shear rock, the bit speed of overall well is significantly improved.
On-the-spot Full Scale Unit Analysis of application result shows, Xinjiang region deep-well upper formation drilling speed improves 74.1%, and understratum drilling speed improves 48.6%, and deflecting control is good, and ground pump energy ezpenditure reduces by 33.7%; Sichuan province deep-well upper formation drilling speed improves 72.9%, and understratum drilling speed improves 43.7%, and wellbore quality meets design standard, and bit grinding loss rate reduces, and achieves the object of low energy consumption, fast drilling well.Because two-stage drill bit all independently can rotate brokenly rock, therefore, the two rotating speed drilling rig of a kind of twin-stage can be combined with conventional Underwell guide tool, realize rapidly and efficiently creeping into of complex structural well, its sharpest edges are, because secondary drill bit turns to contrary with one-level drill bit, rotating speed is adjustable, pass through accurate Calculation, coupling rationally, just can eliminate the impact (reaction torque is the urgent key issue solved in current domestic conventional navigational drilling techniques) of Underwell guide tool reaction torque, be conducive to the stable of drilling tool face, improve complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) control accuracy of track.
The two rotating speed drilling rig of twin-stage of the present invention enters for the efficient quick drill of deep-well, ultradeep well, complex structural well, the control of wellbore quality, extend drill bit and drilling tool application life, reduce energy consumption and integrated cost, increase economic efficiency significant, also broken external technology (rotary steerable drilling technology) monopolization in complex structural well Controlling Technology simultaneously, achieve the object utilizing low-cost technologies to complete complex structural well, there is important social value and economic worth.Also have that structure design is simple, dependable performance, the feature such as easy to operate.
Accompanying drawing explanation
Fig. 1 is according to the two rotating speed drilling rig example structure schematic diagram of a kind of twin-stage proposed by the invention.
In figure: 1-shell body, 2-power assembly, 3-Hooks coupling universal coupling, 4-central axis, 5-by-pass prot, 6-speed change commutation input assembly, 7-sealing device, 8-speed change commutation conversion assembly, 9-axis of rotation, the commutation of 10-speed change export assembly, 11-oil storage tank, 12-sealing device, 13-sealing device, 14-pressure-loaded bearing, 15-bearing, 16-secondary drill bit, 17-sealing device, 18-pressure-loaded bearing, 19-one-level bit adapter.
Detailed description of the invention
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
As Fig. 1, the two rotating speed drilling rig of a kind of twin-stage comprises shell body 1, power assembly 2, Hooks coupling universal coupling 3, central axis 4, speed change commutation input assembly 6, speed change commutation conversion assembly 8, speed change commutation exports assembly and secondary drill bit, one-level bit adapter, wherein: power assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, central axis 4 top is processed with by-pass prot 5, one-level bit adapter 19 is connected to central axis 4 lower end, speed change commutation input assembly 6 is fixedly connected with central axis 4, speed change commutation conversion assembly 8 is arranged in shell body 1 by axis of rotation 9, speed change commutation exports assembly 10 and is fixedly connected with secondary drill bit 16, speed change commutation input assembly 6 and speed change commutates and change assembly 8 and coordinate, and speed change commutates and changes assembly 8 and speed change and commutate and export assembly 10 and coordinate, secondary drill bit 16 with all form rotatory sealing between shell body 1 and central axis 4 and coordinate, .
Embodiment 2
The basis of above-described embodiment 1 also comprises: speed change commutation input assembly 6 and speed change commutate and change assembly 8 and speed change and commutate and change assembly 8 and speed change and commutate and export assembly 10 and be Alveolus type and coordinate.
Install pressure-loaded bearing 14 between shell body 1 and secondary drill bit 16, one-level bit adapter 19 and speed change commutate to export between assembly 10 and install pressure-loaded bearing 18, and one-level bit adapter 19 outer wall and secondary drill bit 16 inwall are all inlaid with wear plate, cross-shaped arrangement.
Embodiment 3
The basis of above-described embodiment also comprises: design between speed change commutation output assembly 10 and shell body 1 inwall and be processed with oil storage tank 11, in oil storage tank 11, be sealed with the lubrication oil of high temperature high voltage resistant.
Between secondary drill bit 16 and shell body 1, speed change commutate export assembly 10 and between shell body 1 and central axis 4, speed change commutates and to input between assembly 6 and shell body 1 mounting sealing device 12,13,17 and 7 respectively, speed change commutation exports between assembly 10 and central axis 4 and installs bearing 15.
Speed change commutation input assembly 6, speed change commutation change assembly 8, speed change commutation output assembly 10 teeth groove than being multiple combination adjustment structure.
Exemplary embodiments 4
Power assembly 2 is connected to the upper end of central axis 4 by Hooks coupling universal coupling 3, central axis 4 is processed with by-pass prot 5, speed change commutation input assembly 6 is fixedly connected with central axis 4, speed change commutation conversion assembly 8 is arranged on shell body 1, speed change commutation exports between assembly 10 and central axis 4 and installs bearing 15, and be fixedly connected with secondary drill bit 16, mounting sealing device 7 between speed change commutation input assembly 6 and shell body 1 inwall, speed change commutation exports mounting sealing device 13 between assembly 10 and shell body 1 inwall, difference mounting sealing device 12 between secondary drill bit 16 and shell body 1 outer wall, speed change commutation input assembly 6 and speed change commutate and change assembly 8 and coordinate, speed change commutation conversion assembly 8 and speed change commutate and export assembly 10 and coordinate, design between speed change commutation output assembly 10 and shell body 1 inwall and be processed with oil storage tank 11, pressure-loaded bearing 14 is installed between secondary drill bit 16 and shell body 1, one-level bit adapter 19 is connected to central axis 4 lower end, one-level bit adapter 19 and speed change commutate and export assembly 10 and install pressure-loaded bearing 18, one-level bit adapter 19 outer wall and secondary drill bit 16 inwall are all inlaid with wear plate.
The device of above-described embodiment is arranged on drilling assembly bottom, can conventional bit or special drill bit be connected on one-level bit adapter, during drilling well, drilling fluid drives power assembly to rotate, power assembly drives central axis by Hooks coupling universal coupling, central axis drives speed change commutation input assembly to rotate, speed change commutation input assembly drives speed change commutation conversion assembly to rotate, speed change commutation conversion assembly drives speed change commutation to export assembly and rotates, speed change commutation exports assembly and drives secondary bit, now secondary drill bit turn to different from central axis, according to down-hole actual condition, processing many covers speed change conversion input assembly can be designed, speed change commutation conversion assembly, speed change commutation exports the combination of assembly, thus can conveniently realize secondary drill speed and one-level drill speed is identical or different, meet the broken rock requirement of different subsurface environment.Drilling fluid, after power assembly, arrives one-level drill bit through central axis by-pass prot, and is sprayed by the hydrophthalmia on one-level drill bit, completes bottom-hole cleaning landwaste, function such as cooling one-level, secondary drill bit etc., and enters on annular space and return to ground.
Claims (6)
1. the two rotating speed drilling rig of twin-stage, it is characterized in that comprising shell body (1), power assembly (2), Hooks coupling universal coupling (3), central axis (4), speed change commutation input assembly (6), speed change commutation conversion assembly (8), speed change commutation exports assembly and secondary drill bit, one-level bit adapter, wherein: power assembly (2) is connected to the upper end of central axis (4) by Hooks coupling universal coupling (3), central axis (4) top is processed with by-pass prot (5), one-level bit adapter (19) is connected to central axis (4) lower end, speed change commutation input assembly (6) is fixedly connected with central axis (4), speed change commutation conversion assembly (8) is arranged in shell body (1) by axis of rotation (9), speed change commutation exports assembly (10) and is fixedly connected with secondary drill bit (16), speed change commutation input assembly (6) and speed change commutates and change assembly (8) and coordinate, and speed change commutates and changes assembly (8) and speed change and commutate and export assembly (10) and coordinate, secondary drill bit (16) with all form rotatory sealing between shell body (1) and central axis (4) and coordinate.
2. the two rotating speed drilling rig of twin-stage according to claim 1, is characterized in that: speed change commutation input assembly (6) and speed change commutate and change assembly (8) and speed change and commutate and change assembly (8) and speed change and commutate and export assembly (10) and be Alveolus type and coordinate.
3. the two rotating speed drilling rig of twin-stage according to claim 1 and 2, it is characterized in that: pressure-loaded bearing (14) is installed between shell body (1) and secondary drill bit (16), one-level bit adapter (19) and speed change commutate to export between assembly (10) and install pressure-loaded bearing (18), one-level bit adapter (19) outer wall and secondary drill bit (16) inwall are all inlaid with wear plate, cross-shaped arrangement.
4. the two rotating speed drilling rig of twin-stage according to claim 3, is characterized in that: design between speed change commutation output assembly (10) and shell body (1) inwall and be processed with oil storage tank (11), be sealed with the lubrication oil of high temperature high voltage resistant in oil storage tank (11).
5. the two rotating speed drilling rig of twin-stage according to claim 4, it is characterized in that: between secondary drill bit (16) and shell body (1), speed change commutate export assembly (10) and between shell body (1) and central axis (4), speed change commutates and to input between assembly (6) and shell body (1) mounting sealing device (12), (13), (17) and (7) respectively, installs bearing (15) between speed change commutation output assembly (10) and central axis (4).
6. the two rotating speed drilling rig of twin-stage according to claim 5, is characterized in that: the commutation of speed change commutation input assembly (6), speed change change assembly (8), speed change commutation output assembly (10) teeth groove than being multiple combination adjustment structure.
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| CN201310510843.1A CN104563860B (en) | 2013-10-27 | 2013-10-27 | The double rotating speed drilling rig of a kind of twin-stage |
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| CN201310510843.1A CN104563860B (en) | 2013-10-27 | 2013-10-27 | The double rotating speed drilling rig of a kind of twin-stage |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014198A (en) * | 2016-05-11 | 2016-10-12 | 上海安恒环保科技有限公司 | Efficient well drilling device for coiled tubing |
| CN106639865A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Graded cutting device |
| CN106930686A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Eccentric double rank broken rock devices |
| CN106930689A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Friction speed Split type drill driver |
| CN106930687A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Fluid power hits the step-by-step movement broken rock device that shakes |
| CN106930685A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Concentric friction speed directional well drilling device in the same direction |
| CN108131097A (en) * | 2018-01-12 | 2018-06-08 | 秦皇岛润昌科技开发有限公司 | A kind of petroleum and natural gas exploitation helicoid hydraulic motor reversing shaft of new construction |
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN117646598A (en) * | 2024-01-30 | 2024-03-05 | 陕西延长石油矿业有限责任公司 | Mine-based two-stage drilling device and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106639865A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Graded cutting device |
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| CN108131097A (en) * | 2018-01-12 | 2018-06-08 | 秦皇岛润昌科技开发有限公司 | A kind of petroleum and natural gas exploitation helicoid hydraulic motor reversing shaft of new construction |
| CN108131097B (en) * | 2018-01-12 | 2024-02-06 | 秦皇岛润昌科技开发有限公司 | Screw drilling tool reversing shaft for petroleum and natural gas exploitation |
| CN111021946B (en) * | 2019-12-31 | 2022-03-18 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed-increasing process for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN117646598A (en) * | 2024-01-30 | 2024-03-05 | 陕西延长石油矿业有限责任公司 | Mine-based two-stage drilling device and application method thereof |
| CN117646598B (en) * | 2024-01-30 | 2024-04-12 | 陕西延长石油矿业有限责任公司 | Mine-based two-stage drilling device and application method thereof |
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