CN106930686A - Eccentric double rank broken rock devices - Google Patents
Eccentric double rank broken rock devices Download PDFInfo
- Publication number
- CN106930686A CN106930686A CN201511004466.XA CN201511004466A CN106930686A CN 106930686 A CN106930686 A CN 106930686A CN 201511004466 A CN201511004466 A CN 201511004466A CN 106930686 A CN106930686 A CN 106930686A
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- CN
- China
- Prior art keywords
- drill bit
- order
- broken rock
- bit
- shell body
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Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
- E21B4/02—Fluid rotary type drives
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A kind of eccentric double rank broken rock devices of present invention design, master includes shell body, positive displacement power assembly, power transmission shaft, lower contact and single order drill bit；Wherein：Shell body 1 also includes being connected with second order drill bit；Lower contact is located at second order drill bit internal；Positive displacement power assembly, the central shaft of power transmission shaft and single order bit central overlapping of axles, shell body and second order bit central overlapping of axles, single order bit central axle and second order bit central axle are misaligned.The device is arranged between BHA and drill bit, rotating speed high and high pulling torque can be provided for drill bit broken rock, stepped well can be got out again, reduce the broken rock difficulty of given size drill bit, more conventional single-order broken rock mode can effectively improve rock-breaking efficiency, reduce drilling well integrated cost；Single order drill bit can be made to produce rotation and revolution simultaneously, thoroughly solve the problems, such as that the low broken rock energy of conventional single-order bit central linear velocity is not enough, bigger cutting output can be obtained, BHA can also more stablized, be conducive to controlling hole quality.
Description
Technical field
The present invention relates to oil and gas well drilling, the drilling tool field in CBM Drilling field, especially a kind of eccentric double rank broken rock devices.
Background technology
With the increase of oil/gas drilling well depth, rock stratum is harder to be difficult to crush, the raising of rate of penetration is had a strong impact on, the reduction of drilling speed has become the technical bottleneck of restriction China deep-seated oil gas reservoir Efficient Development, and existing conventional rock-breaking and well-drilling technology can not meet the technological requirement for putting forward effect.PDC drill bit has the advantages that to be widely applied better than other drill bits, but big size hole drilling speed is slow, high abrasive stratum bit wear is serious, large scale or high-performance drill bit are expensive, the low broken rock energy of bit central linear velocity is not enough, it is also subject matter that PDC drill bit faces, New well drilling technology such as laser drill, drilling by use of heat, particle punching drilling can't carry out live application.
The content of the invention
The purpose of the present invention is directed to the problem of prior art presence, for oil and gas well drilling, CBM Drilling, geological prospecting, mine probing provide a kind of simple structure, dependable performance, control accuracy is high, the double rank broken rock devices of easy to operate bias, further to improve the rock breaking capacity of solid rock, high abrasive rock, the rate of penetration of design well is greatly improved.
The technical solution adopted for the present invention to solve the technical problems is：
Eccentric double rank broken rock devices, master includes shell body 1, positive displacement power assembly 2, power transmission shaft 5, lower contact 7 and single order drill bit 8；The top of power transmission shaft 5 processes by-pass prot 4, and the bottom of power transmission shaft 5 is connected with lower contact 7, and positive displacement power assembly 2, by-pass prot 4, power transmission shaft 5 are installed in inside shell body 1, and lower contact 7 is located at shell body bottom, and lower contact 7 is connected with single order drill bit 8, it is characterised in that：Also include second order drill bit 9；Shell body 1 is connected with second order drill bit 9；Lower contact 7 is located inside second order drill bit 9；Positive displacement power assembly 2, the central shaft of power transmission shaft 5 overlap with single order bit central axle 13, and shell body 1 overlaps with the central shaft 12 of second order drill bit 9, and single order bit central axle 13 and second order bit central axle 12 are misaligned.
Such scheme is further included：
Shaft coupling 3 is installed between positive displacement power assembly 2 and power transmission shaft 5, stabilizer 6 is provided with outside shell body 1.
Stabilizer 6 is spiral stabilizer or straight rib type stabilizer, one kind of idler wheel stabilizer.
The bottom surface of single order drill bit 8 protrudes from the bottom surface of second order drill bit 9.
The raising drilling speed of eccentric double rank broken rock devices of the invention both double rank broken rock broken rock devices with concentric structure, and it is small to solve single order bit central linear velocity, limits the problem of single order drill bit efficiency of breaking rock；Give full play to the advantage of prior art equipment, break foreign technology monopolization, play the technical advantage of double rank drilling technologies, improve bit speed, drilling well integrated cost is reduced, shortens the construction operation cycle, meet the technological requirement of deep-seated oil gas reservoir Efficient Development drilling well, double rank broken rock techniques can effectively reduce the broken rock difficulty of drill bit used by design well, further improve the efficiency of well drilling and rock crushing；Meanwhile, eccentric double rank broken rock devices also have that structure design is simple, dependable performance, easy to operate feature.
Field practice is proved, average to improve drilling efficiency 56.7% using eccentric double rank broken rock device drilling wells, saves drilling period 5-8 days, and drilling quality meets design standard, realizes low energy consumption, efficient drilling well purpose.
Brief description of the drawings
Fig. 1 is according to the double rank broken rock apparatus structure schematic diagrams of bias proposed by the invention.
Fig. 2 is according to the single order drill bit and second order drill bit combination diagram of the double rank broken rock devices of bias proposed by the invention.
Fig. 3 is according to single order drill bit and second order drill bit movement locus schematic diagram in the wellbore in the double rank broken rock devices of bias proposed by the invention.
1- shell bodies, 2- positive displacements power assembly, 3- shaft couplings, 4- by-pass prots, 5- power transmission shafts, 6- stabilizers, 7- lower contacts, 8- single orders drill bit, 9- second orders drill bit, 10- single order drill bit movements track, 11- second order drill bit movements track, 12- second order bit centrals axle, 13- single order bit central axles in figure.
Specific embodiment
Describe the present invention in detail below in conjunction with the accompanying drawings.
Reference picture 1, eccentric double rank broken rock devices, master includes shell body 1, positive displacement power assembly 2, power transmission shaft 5, lower contact 7 and single order drill bit 8；The top of power transmission shaft 5 processes by-pass prot 4, the bottom of power transmission shaft 5 is connected with lower contact 7, and positive displacement power assembly 2, by-pass prot 4, power transmission shaft 5 are installed in inside shell body 1, and lower contact 7 is located at shell body bottom, lower contact 7 is connected with single order drill bit 8, and its distinguishing characteristics is：Also include second order drill bit 9；Shell body 1 is connected with second order drill bit 9；Lower contact 7 is located inside second order drill bit 9；Positive displacement power assembly 2, the central shaft of power transmission shaft 5 overlap with single order bit central axle 13, and shell body 1 overlaps with the central shaft 12 of second order drill bit 9, and single order bit central axle 13 and second order bit central axle 12 are misaligned.
Above-described embodiment is further included：
Shaft coupling 3 is installed between positive displacement power assembly 2 and power transmission shaft 5, stabilizer 6 is provided with outside shell body 1.
Stabilizer 6 is spiral stabilizer or straight rib type stabilizer, one kind of idler wheel stabilizer.
The bottom surface of single order drill bit 8 protrudes from the bottom surface of second order drill bit 9.
Working mechanism of the invention and effect：
During well drilling and rock crushing, after drilling fluid enters eccentric double rank broken rock devices, drilling fluid drives positive displacement power assembly to start to rotate, drive axis are driven by shaft coupling, and then driving lower contact to rotate, lower contact is rotated and drives single order drill bit to start rotation broken rock, and drilling fluid is by after positive displacement power assembly, enter inside power transmission shaft through by-pass prot, then reach shaft bottom by single order drill bit；The driving torque of ground rotating disk is transferred to eccentric double rank broken rock crust of the device bodies and reaches second order drill bit by drill string simultaneously, drives second order drill bit to rotate broken rock.Single order drill bit around its central axis while broken rock is rotated, rotated around second order bit central axle also with the rotation of second order drill bit, so as to generate rotation and revolution two states, because single order bit central axle and second-order central axle are eccentric structures, the high linear speed region of single order drill bit is allowed for by the low linear velocity region of bit central, conventional bit is also just overcome and the low deficiency of efficiency of breaking rock is caused because center line velocity is small.Rotation formula and combination that eccentric double rank broken rock devices pass through two rank drill bits of control, stepped shaft bottom can either be got out, be conducive to designing the rapidly and efficiently drilling of well, solve the problems, such as that the small efficiency of breaking rock of conventional bit center line velocity is low again, and institute's bored borehole better quality, stability is stronger, it is adaptable to all kinds drill bit（Rock bit, PDC drill bit）Technical requirements, compared with conventional breaking technique for rock, under conditions of same consumption energy and drilling period, can cut more rocks, i.e. rate of penetration faster, efficiency of breaking rock it is higher, its economic benefit is very notable.
Claims (4)
1. eccentric double rank broken rock devices, main to include shell body（1）, positive displacement power assembly（2）, power transmission shaft（5）, lower contact（7）With single order drill bit（8）；Wherein, power transmission shaft（5）Top processes by-pass prot（4）, power transmission shaft（5）Bottom and lower contact（7）Connection, positive displacement power assembly（2）, by-pass prot（4）, power transmission shaft（5）It is installed in shell body（1）Inside, lower contact（7）Positioned at shell body bottom, lower contact（7）With single order drill bit（8）Connection, it is characterised in that：Also include second order drill bit（9）；Shell body（1）With second order drill bit（9）Connection；Lower contact（7）Positioned at second order drill bit（9）It is internal；Positive displacement power assembly（2）, power transmission shaft（5）Central shaft and single order bit central axle（13）Overlap, shell body（1）With second order drill bit（9）Central shaft（12）Overlap, single order bit central axle（13）With second order bit central axle（12）It is misaligned.
2. eccentric double rank broken rock devices according to claim 1, it is characterized in that：Positive displacement power assembly（2）With power transmission shaft（5）Between shaft coupling is installed（3）, in shell body（1）Outside is provided with stabilizer（6）.
3. eccentric double rank broken rock devices according to claim 2, it is characterized in that：Stabilizer（6）It is spiral stabilizer or straight rib type stabilizer, one kind of idler wheel stabilizer.
4. the double rank broken rock devices of bias according to claim 1 or 2,3, it is characterized in that：Single order drill bit（8）Bottom surface protrudes from second order drill bit（9）Bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004466.XA CN106930686A (en) | 2015-12-29 | 2015-12-29 | Eccentric double rank broken rock devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004466.XA CN106930686A (en) | 2015-12-29 | 2015-12-29 | Eccentric double rank broken rock devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930686A true CN106930686A (en) | 2017-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511004466.XA Pending CN106930686A (en) | 2015-12-29 | 2015-12-29 | Eccentric double rank broken rock devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930686A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984845A (en) * | 2019-12-31 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed increasing method for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN111021946A (en) * | 2019-12-31 | 2020-04-17 | 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 |
| CN111058761A (en) * | 2019-12-31 | 2020-04-24 | 中国石油集团川庆钻探工程有限公司 | Manufacturing method of double-speed double-center drilling speed-increasing equipment |
| CN111322014A (en) * | 2020-03-26 | 2020-06-23 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing method for increasing drilling speed of oil and gas well |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3640352A (en) * | 1969-12-12 | 1972-02-08 | Robert W Stuart | Rotary drill assembly |
| US3951220A (en) * | 1974-08-19 | 1976-04-20 | Vance Industries, Inc. | Archimedes spiral drill bit |
| US4267893A (en) * | 1979-08-27 | 1981-05-19 | Union Oil Company Of California | Dual-rotating eccentric drilling apparatus and method |
| DE69529634T2 (en) * | 1994-03-22 | 2003-12-04 | Charles Machine Works | Directional drill head with deflection shoe |
| US20040188149A1 (en) * | 2003-03-26 | 2004-09-30 | Thigpen Gary M. | Drill out bi-center bit and method for using same |
| 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 |
| US20140041942A1 (en) * | 2012-08-07 | 2014-02-13 | Dura Drilling, Inc. | High-Speed Triple String Drilling System |
| CN204152424U (en) * | 2014-10-14 | 2015-02-11 | 长江大学 | A kind of down-hole helicoid hydraulic motor |
| CN104563860A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Double-stage double-rotating-speed well drilling device |
| CN205382876U (en) * | 2015-12-29 | 2016-07-13 | 中石化石油工程技术服务有限公司 | Broken rock device in eccentric two rank |
-
2015
- 2015-12-29 CN CN201511004466.XA patent/CN106930686A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3640352A (en) * | 1969-12-12 | 1972-02-08 | Robert W Stuart | Rotary drill assembly |
| US3951220A (en) * | 1974-08-19 | 1976-04-20 | Vance Industries, Inc. | Archimedes spiral drill bit |
| US4267893A (en) * | 1979-08-27 | 1981-05-19 | Union Oil Company Of California | Dual-rotating eccentric drilling apparatus and method |
| DE69529634T2 (en) * | 1994-03-22 | 2003-12-04 | Charles Machine Works | Directional drill head with deflection shoe |
| US20040188149A1 (en) * | 2003-03-26 | 2004-09-30 | Thigpen Gary M. | Drill out bi-center bit and method for using same |
| 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 |
| US20140041942A1 (en) * | 2012-08-07 | 2014-02-13 | Dura Drilling, Inc. | High-Speed Triple String Drilling System |
| CN104563860A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Double-stage double-rotating-speed well drilling device |
| CN204152424U (en) * | 2014-10-14 | 2015-02-11 | 长江大学 | A kind of down-hole helicoid hydraulic motor |
| CN205382876U (en) * | 2015-12-29 | 2016-07-13 | 中石化石油工程技术服务有限公司 | Broken rock device in eccentric two rank |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984845A (en) * | 2019-12-31 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Well drilling speed increasing method for changing bottom hole confining pressure distribution by middle energy accumulation |
| CN111021946A (en) * | 2019-12-31 | 2020-04-17 | 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 |
| CN111058761A (en) * | 2019-12-31 | 2020-04-24 | 中国石油集团川庆钻探工程有限公司 | Manufacturing method of double-speed double-center drilling speed-increasing equipment |
| CN111322014A (en) * | 2020-03-26 | 2020-06-23 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing method for increasing drilling speed of oil and gas well |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
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| RJ01 | Rejection of invention patent application after publication |