CN104563860B - The double rotating speed drilling rig of a kind of twin-stage - Google Patents

The double rotating speed drilling rig of a kind of twin-stage Download PDF

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Publication number
CN104563860B
CN104563860B CN201310510843.1A CN201310510843A CN104563860B CN 104563860 B CN104563860 B CN 104563860B CN 201310510843 A CN201310510843 A CN 201310510843A CN 104563860 B CN104563860 B CN 104563860B
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China
Prior art keywords
speed change
assembly
change commutation
stage
central shaft
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CN201310510843.1A
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Chinese (zh)
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CN104563860A (en
Inventor
李文飞
周延军
夏文安
耿应春
牛洪波
李玄烨
于丽丽
于丽萍
刘晓艳
Original Assignee
中国石油化工集团公司
中石化胜利石油工程有限公司钻井工艺研究院
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Priority to CN201310510843.1A priority Critical patent/CN104563860B/en
Publication of CN104563860A publication Critical patent/CN104563860A/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
    • E21B4/00Drives for drilling, used in the borehole
    • E21B4/16Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Abstract

The present invention relates to the double rotating speed drilling rig of a kind of twin-stage in the industry fields such as oil and gas well drilling, geological prospecting, mine probing, cbm development, including shell body 1, power assembly 2, Hooks coupling universal coupling 3, central shaft 4, speed change commutation input assembly 6, speed change commutation conversion assembly 8, speed change commutation output assembly and two grades of drill bits, one-level bit adapters.This device is arranged on bottom hole assemblies bottom, utilize the little drill bit of the first order to break the high feature of rock speed to get out a small size and lead eye, owing to rock part stress has discharged, thus reduce second level large-size drill bit and break rock difficulty, well entirety rate of penetration is made to be improved, and beneficially direction of deflection and the control of stick slip vibration, for improving deep-well, ultra-deep well drilling speed, extends drill string and drilling life of bit has important practical significance.Meanwhile, the double rotating speed drilling rig of twin-stage also have simple in construction, easy to operate, be easily installed, safe and reliable advantage.

Description

The double rotating speed drilling rig of a kind of twin-stage
Technical field
The present invention relates to the double 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 day by day strengthening and the fast development of drilling technology of oil-gas field development difficulty, the requirement of drilling speed is grown with each passing day by oil gas field, particularly deep-well, ultradeep well, complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) quantity is continuously increased, in drilling process, increase along with drilling well well depth, not only shaft bottom chip hold down effect is aggravated by drilling fluid column pressure, and the intensity of formation rock self, vertically stress, flatly stress etc. increase accordingly, 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, owing to the part stress of rock has discharged, thus reduce large-size drill bit and break the difficulty of rock, well entirety rate of penetration is improved, and the control for direction of deflection and drilling tool stick slip vibration also has certain positive role, be 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 twin-stage and bores the function of first two rotating speed, but still suffers from some deficiency following, it is impossible to fully meet the requirement of on-the-spot drilling technology.(1) second level drill bit is connected with drill string, and rotary power is provided by ground with moment of torsion, and the broken rock rotating speed expanded reach of second level drill bit is limited;(2) two-stage drill bit turns to identical, it is impossible to realize two-stage drill bit shearing-crushing rock effect (bottom rock comprcssive strength > shearing strength > tensile strength, therefore shearing-crushing is more beneficial for the broken of rock);(3) two-stage drill bit cutting speed difference is big, causes two-stage drill bit the pressure of the drill unreasonable distribution, it is difficult to plays drilling bit high-speed and cuts the advantage crept into, and easily causes two-stage drill bit abrasion unbalanced, the overall bit speed of impact;(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 disclosure satisfy that on-the-spot drilling technology of design it is badly in need of, and simple in construction, dependable performance, control accuracy is high, the double 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 drill string and the service life of drill bit, meet oil-gas field development and drilling engineering is proposed to the technology requirement of effect.
Summary of the invention
The invention aims to the advantage playing twin-stage drilling technology to greatest extent during deep-well, ultra-deep well drilling, while improving rate of penetration shortening drilling period reduction integrated cost, the harm reducing shaft bottom stick slip vibration improves the control power of direction of deflection, extend drill string and the service life of drill bit, it is provided that the double rotating speed drilling rig of a kind of twin-stage.
The technical scheme is that
The double rotating speed drilling rig of a kind of twin-stage includes shell body 1, power assembly 2, Hooks coupling universal coupling 3, central shaft 4, speed change commutation input assembly 6, speed change commutation conversion assembly 8, speed change commutation output assembly and two grades of drill bits, one-level bit adapter, wherein: power assembly 2 is connected to the upper end of central shaft 4 by Hooks coupling universal coupling 3, central shaft 4 top is machined with by-pass prot 5, one-level bit adapter 19 is connected to central shaft 4 lower end, speed change commutation input assembly 6 is fixing with central shaft 4 to be connected, speed change commutation conversion assembly 8 is arranged in shell body 1 by rotary shaft 9, speed change commutation output assembly 10 is fixing with two grades of drill bits 16 to be connected;Speed change commutation input assembly 6 coordinates with speed change commutation conversion assembly 8, and speed change commutation conversion assembly 8 coordinates with speed change commutation output assembly 10;Two grades of drill bits 16 with all constitute rotatory sealing between shell body 1 and central shaft 4 and coordinate.
Such scheme also includes:
Speed change commutation input assembly 6 is Alveolus type with speed change commutation conversion assembly 8 and speed change commutation conversion assembly 8 with speed change commutation output assembly 10 and coordinates.
Installing pressure-loaded bearing 14 between shell body 1 and two grades of drill bits 16, install pressure-loaded bearing 18 between one-level bit adapter 19 and speed change commutation output assembly 10, one-level bit adapter 19 outer wall and two grades of drill bit 16 inwalls are all inlaid with wear plate, cross-shaped arrangement.
Between speed change commutation output assembly 10 and shell body 1 inwall, Design and Machining has oil storage tank 11, is sealed with the lubricating oil of high temperature high voltage resistant in oil storage tank 11.
It is respectively mounted sealing device 12,13,17 and 7 between two grades of drill bits 16 and shell body 1, between speed change commutation output assembly 10 and shell body 1 and central shaft 4, between speed change commutation input assembly 6 and shell body 1, between speed change commutation output assembly 10 and central shaft 4, bearing 15 is installed.
Speed change commutation input assembly 6, speed change commutation changes assembly 8, speed change commutation exports the teeth groove ratio of assembly 10 into multiple combination adjustment structure.
nullThe double rotating speed drilling rig of the twin-stage of the present invention is arranged on BHA bottom,Conventional bit or special drill bit can 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 shaft 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 output assembly to rotate,Speed change commutation output assembly drives two grades of bits,Now two grades of drill bits turn to different from central shaft,According to down-hole actual condition,Can Design and Machining many sets speed change commutation input assembly、Speed change commutation conversion assembly、The combination of speed change commutation output assembly,It is thus possible to it is identical or different with one-level drill speed conveniently to realize two grades of drill speeds,Meet the broken rock requirement of different subsurface environment.
Drilling fluid, after power assembly, arrives one-level drill bit through central shaft by-pass prot, and is sprayed by the hydrophthalmia on one-level drill bit, completes bottom-hole cleaning landwaste, the cooling function such as one-level, two grades of drill bits, and enters and return to ground on annular space.Theoretical values simulation and laboratory experiment result show, the leading two grades of bit contact shaft bottoms of one-level drill bit broken rock, and size is less, efficiency of breaking rock energy high, required is little, owing to the part stress in bottom rock is released, thus reducing the broken rock difficulty of two grades of large-size drill bits, two-stage drill bit turns on the contrary simultaneously, achieve the effect of torsional shear rock so that the bit speed of overall well is greatly 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 expenditure 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, it is achieved that low energy consumption, the purpose of fast drilling well.Rock all can be independently rotated brokenly due to two-stage drill bit, therefore, the double 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, owing to two grades of drill bits turn to contrary with one-level drill bit, rotating speed is adjustable, by accurately calculating, coupling is 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 stablizing of drilling tool face, improve complex structural well (long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.) control accuracy of track.
The double rotating speed drilling rig of the twin-stage of the present invention enters for deep-well, ultradeep well, the efficient quick drill of complex structural well, the control of wellbore quality, extend drill bit and the service life of drilling tool, reduce energy consumption and integrated cost, increase economic efficiency significant, also broken technology (rotary steerable drilling technology) monopolization abroad controlling process aspect at complex structural well simultaneously, achieve the purpose 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 based on the double 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 shaft, 5-by-pass prot, 6-speed change commutation input assembly, 7-sealing device, 8-speed change commutation conversion assembly, 9-rotary shaft, 10-speed change commutation output assembly, 11-oil storage tank, 12-sealing device, 13-sealing device, 14-pressure-loaded bearing, 15-bearing, bis-grades of drill bits of 16-, 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 accompanying drawings with specific embodiment.
Embodiment 1
Such as Fig. 1, the double rotating speed drilling rig of a kind of twin-stage includes shell body 1, power assembly 2, Hooks coupling universal coupling 3, central shaft 4, speed change commutation input assembly 6, speed change commutation conversion assembly 8, speed change commutation output assembly and two grades of drill bits, one-level bit adapter, wherein: power assembly 2 is connected to the upper end of central shaft 4 by Hooks coupling universal coupling 3, central shaft 4 top is machined with by-pass prot 5, one-level bit adapter 19 is connected to central shaft 4 lower end, speed change commutation input assembly 6 is fixing with central shaft 4 to be connected, speed change commutation conversion assembly 8 is arranged in shell body 1 by rotary shaft 9, speed change commutation output assembly 10 is fixing with two grades of drill bits 16 to be connected;Speed change commutation input assembly 6 coordinates with speed change commutation conversion assembly 8, and speed change commutation conversion assembly 8 coordinates with speed change commutation output assembly 10;Two grades of drill bits 16 with all constitute rotatory sealing between shell body 1 and central shaft 4 and coordinate;.
Embodiment 2
Also include on the basis of above-described embodiment 1: speed change commutation input assembly 6 is Alveolus type with speed change commutation conversion assembly 8 and speed change commutation conversion assembly 8 with speed change commutation output assembly 10 and coordinates.
Installing pressure-loaded bearing 14 between shell body 1 and two grades of drill bits 16, install pressure-loaded bearing 18 between one-level bit adapter 19 and speed change commutation output assembly 10, one-level bit adapter 19 outer wall and two grades of drill bit 16 inwalls are all inlaid with wear plate, cross-shaped arrangement.
Embodiment 3
Also include on the basis of above-described embodiment: between speed change commutation output assembly 10 and shell body 1 inwall, Design and Machining has oil storage tank 11, is sealed with the lubricating oil of high temperature high voltage resistant in oil storage tank 11.
It is respectively mounted sealing device 12,13,17 and 7 between two grades of drill bits 16 and shell body 1, between speed change commutation output assembly 10 and shell body 1 and central shaft 4, between speed change commutation input assembly 6 and shell body 1, between speed change commutation output assembly 10 and central shaft 4, bearing 15 is installed.
Speed change commutation input assembly 6, speed change commutation changes assembly 8, speed change commutation exports the teeth groove ratio of assembly 10 into multiple combination adjustment structure.
Exemplary embodiments 4
nullPower assembly 2 is connected to the upper end of central shaft 4 by Hooks coupling universal coupling 3,By-pass prot 5 it is machined with on central shaft 4,Speed change commutation input assembly 6 is fixing with central shaft 4 to be connected,Speed change commutation conversion assembly 8 is arranged on shell body 1,Between speed change commutation output assembly 10 and central shaft 4, bearing 15 is installed,And fixing with two grades of drill bits 16 be connected,Between speed change commutation input assembly 6 and shell body 1 inwall, sealing device 7 is installed、Between speed change commutation output assembly 10 and shell body 1 inwall, sealing device 13 is installed、It is respectively mounted sealing device 12 between two grades of drill bits 16 and shell body 1 outer wall,Speed change commutation input assembly 6 coordinates with speed change commutation conversion assembly 8,Speed change commutation conversion assembly 8 coordinates with speed change commutation output assembly 10,Between speed change commutation output assembly 10 and shell body 1 inwall, Design and Machining has oil storage tank 11,Pressure-loaded bearing 14 is installed between two grades of drill bits 16 and shell body 1,One-level bit adapter 19 is connected to central shaft 4 lower end,One-level bit adapter 19 installs pressure-loaded bearing 18 with speed change commutation output assembly 10,One-level bit adapter 19 outer wall and two grades of drill bit 16 inwalls are all inlaid with wear plate.
The device of above-described embodiment is arranged on BHA bottom, conventional bit or special drill bit can 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 shaft 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 output assembly to rotate, speed change commutation output assembly drives two grades of bits, now two grades of drill bits turn to different from central shaft, according to down-hole actual condition, the conversion of Design and Machining many sets speed change can input assembly, speed change commutation conversion assembly, the combination of speed change commutation output assembly, it is thus possible to it is identical or different with one-level drill speed conveniently to realize two grades of drill speeds, meet the broken rock requirement of different subsurface environment.Drilling fluid, after power assembly, arrives one-level drill bit through central shaft by-pass prot, and is sprayed by the hydrophthalmia on one-level drill bit, completes bottom-hole cleaning landwaste, the cooling function such as one-level, two grades of drill bits, and enters and return to ground on annular space.

Claims (6)

1. the double rotating speed drilling rig of twin-stage, it is characterized in that including shell body (1), power assembly (2), Hooks coupling universal coupling (3), central shaft (4), speed change commutation input assembly (6), speed change commutation conversion assembly (8), speed change commutation output assembly and two grades of drill bits, one-level bit adapter, wherein: power assembly (2) is connected to the upper end of central shaft (4) by Hooks coupling universal coupling (3), central shaft (4) top is machined with by-pass prot (5), one-level bit adapter (19) is connected to central shaft (4) lower end, speed change commutation input assembly (6) is fixing with central shaft (4) to be connected, speed change commutation conversion assembly (8) is arranged in shell body (1) by rotary shaft (9), speed change commutation output assembly (10) is fixing with two grades of drill bits (16) to be connected;Speed change commutation input assembly (6) coordinates with speed change commutation conversion assembly (8), and speed change commutation conversion assembly (8) coordinates with speed change commutation output assembly (10);Two grades of drill bits (16) with all constitute rotatory sealing between shell body (1) and central shaft (4) and coordinate.
The double rotating speed drilling rig of twin-stage the most according to claim 1, is characterized in that: speed change commutation input assembly (6) is Alveolus type with speed change commutation conversion assembly (8) and speed change commutation conversion assembly (8) with speed change commutation output assembly (10) and coordinates.
The double rotating speed drilling rig of twin-stage the most according to claim 1 and 2, it is characterized in that: pressure-loaded bearing (14) is installed between shell body (1) and two grades of drill bits (16), pressure-loaded bearing (18) is installed between one-level bit adapter (19) and speed change commutation output assembly (10), one-level bit adapter (19) outer wall and two grades of drill bit (16) inwalls are all inlaid with wear plate, cross-shaped arrangement.
The double rotating speed drilling rig of twin-stage the most according to claim 3, is characterized in that: between speed change commutation output assembly (10) and shell body (1) inwall, Design and Machining has oil storage tank (11), is sealed with the lubricating oil of high temperature high voltage resistant in oil storage tank (11).
The double rotating speed drilling rig of twin-stage the most according to claim 4, it is characterized in that: between two grades of drill bits (16) and shell body (1), between speed change commutation output assembly (10) and shell body (1) and central shaft (4), between speed change commutation input assembly (6) and shell body (1), be respectively mounted sealing device (12), (13), (17) and (7), bearing (15) is installed between speed change commutation output assembly (10) and central shaft (4).
The double rotating speed drilling rig of twin-stage the most according to claim 5, is characterized in that: assembly (8) change in the commutation of speed change commutation input assembly (6), speed change, speed change commutation exports the teeth groove of assembly (10) ratio into multiple combination adjustment structure.
CN201310510843.1A 2013-10-27 2013-10-27 The double rotating speed drilling rig of a kind of twin-stage CN104563860B (en)

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CN106639865B (en) * 2015-10-30 2019-03-12 中石化石油工程技术服务有限公司 Stagewise cutting apparatus
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
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
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
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
CN106014198B (en) * 2016-05-11 2018-09-14 上海安恒环保科技有限公司 A kind of efficient connecting pipes drilling rig

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CN87100905A (en) * 1987-02-21 1988-02-24 赵进善 Diving trepan sealing and subtract torque force device
CN2625559Y (en) * 2003-05-29 2004-07-14 胜利石油管理局钻井工艺研究院 PDC reaming drill
GB201112239D0 (en) * 2011-07-15 2011-08-31 Caledus Ltd Down-hole swivel sub
CN102561951A (en) * 2012-01-14 2012-07-11 中国石油天然气集团公司 Double-stage and double-speed well drilling tool
CN103114812B (en) * 2013-03-05 2014-06-18 山东托普森金刚石钻头有限公司 Diamond compact annular concentric simultaneous casing drilling bit and working method thereof

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