CN106930689A - Friction speed Split type drill driver - Google Patents
Friction speed Split type drill driver Download PDFInfo
- Publication number
- CN106930689A CN106930689A CN201511005785.2A CN201511005785A CN106930689A CN 106930689 A CN106930689 A CN 106930689A CN 201511005785 A CN201511005785 A CN 201511005785A CN 106930689 A CN106930689 A CN 106930689A
- Authority
- CN
- China
- Prior art keywords
- power transmission
- transmission shaft
- shell body
- bit
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
A kind of friction speed Split type drill driver, mainly by shell body, power assembly, shaft coupling, power transmission shaft, one-level bit adapter is constituted, power assembly is arranged on the top inside shell body, power assembly is connected to the upper end of power transmission shaft by shaft coupling, by-pass prot is machined with power transmission shaft, power transmission shaft lower end connects one-level bit adapter, gear is provided between power transmission shaft and shell body, there are two grades of bit adapters between one-level bit adapter and shell body, gear it is inside and outside respectively with power transmission shaft, shell body engagement constitutes planetary gear and coordinates, the central shaft of gear is fixedly connected with two grades of bit adapters.The driver can either drive the small drill bit of one-level to rotate broken rock at a high speed along clockwise direction, clockwise high pulling torque can be provided for two grades of large-size drill bit broken rocks again, it is improved well entirety rate of penetration, and be conducive to the control of direction of deflection and stick slip vibration, for improving deep-well, ultra-deep well drilling speed, extension drill string and drilling life of bit have important practical significance.
Description
Technical field
The invention mainly relates to oil and gas well drilling, the drilling tool in CBM Drilling field, especially a kind of friction speed Split type drill driver.
Background technology
In drilling process, with the increase of drilling well well depth, not only drilling well head of liquid aggravates to shaft bottom chip hold down effect, and the intensity of formation rock itself, vertical crustal stress, horizontal crustal stress etc. are corresponding increases, formation rock drillability is deteriorated, causing rate of penetration reduces, and not only have impact on the control of wellbore quality, and badly influences the drilling period and drilling cost of full well.
Drilling practice shows, using the small drill bit broken rock speed of the first order it is high the characteristics of get out a small size and lead eye, then during second level large-size drill bit broken rock, because the part stress of rock has discharged, so as to reduce the difficulty of large-size drill bit broken rock, so that well entirety rate of penetration is improved, and also there is certain positive role for the control of direction of deflection and drilling tool stick slip vibration, be a kind of more satisfactory drilling technology.Patent 201210011193.1 mentions a kind of twin-stage double-speed well drilling tool, and although this structure realizes twin-stage and bore the function of first two rotating speed, but still suffers from following some deficiency, it is impossible to fully meet the requirement of live drilling technology.（1）Second level drill bit is connected with drill string, and rotary power is provided with moment of torsion by ground, it is difficult to fully meet the broken rock rotating speed of second level drill bit and the optimized parameter requirement of broken rock moment of torsion；（2）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 play the advantage of drilling bit high-speed cutting drilling, easily causes two-stage drill bit to wear and tear unbalanced, the overall bit speed of influence；（3）The process specifications of slide drilling in complex structural well drilling process can not be met；（4）The stick slip vibration of direction of deflection and drill string can not effectively be controlled.
The content of the invention
The purpose of the present invention is directed to the problem of prior art presence, proposes a kind of actual requirement that disclosure satisfy that live drilling technology, and simple structure, dependable performance, control accuracy downhole drill special drive device high, easy to operate.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of friction speed Split type drill driver, mainly it is made up of shell body 1, power assembly 2, shaft coupling 3, power transmission shaft 5, one-level bit adapter 11, power assembly 2 is arranged on the top inside shell body 1, power assembly 2 is connected to the upper end of power transmission shaft 5 by shaft coupling 3, by-pass prot 4 is machined with power transmission shaft 5, the lower end of power transmission shaft 5 connects one-level bit adapter 11, wherein：Gear 7 is provided between power transmission shaft 5 and shell body 1, there are two grades of bit adapters 9 between one-level bit adapter 11 and shell body 1, the inside and outside composition planetary gear that engaged with power transmission shaft 5, shell body 1 respectively of gear 7 coordinates, and the central shaft of gear 7 is fixedly connected with two grades of bit adapters 9.
Such scheme is further included：
Bearing 8 is installed between the shell body 1 and two grades of bit adapters 9, bearing 10 is installed between the one-level bit adapter 11 and two grades of bit adapters 9.
Sealing device 6 is installed between the power transmission shaft 5 and shell body 1.
The power assembly 2 is positive displacement motor or turbine motor.
The gear 7 is sealed in lubricating oil.
The outer wall of one-level bit adapter 11 and two grades of inwalls of drill bit 9 are equipped with anti-roll flute.
Friction speed Split type drill driver of the invention gives full play to the advantage of double drill bit drilling technologies, reduces the influence of drillstring vibrations, raises speed and improve the control accuracy of well track；Two drill bits can be driven independently to rotate broken rock, that is, improve complex structural well（Long horizontal sections horizontal well, extended reach well, Multilateral Wells etc.）Drilling efficiency, be also beneficial to the control of well track；For deep-well, ultradeep well, complex structural well efficient quick drill enter, the control of wellbore quality, extension drill bit and the service life of drilling tool, reducing energy consumption and integrated cost, increase economic efficiency it is significant, while also having broken the external technology for controlling process aspect in complex structural well（Rotary steerable drilling technology）Monopolization, realizes the purpose that complex structural well is completed using low-cost technologies, with important social value and economic worth；Also have structure design simple, dependable performance, it is easy to operate the features such as.
Brief description of the drawings
Fig. 1 is according to friction speed Split type drill activation configuration schematic diagram proposed by the invention.
1- shell bodies, 2- power assemblies, 3- shaft couplings, 4- by-pass prots, 5- power transmission shafts, 6- sealing devices, 7- gears, 8- bearings, bis- grades of bit adapters of 9-, 10- bearings, 11- one-level bit adapters in figure.
Specific embodiment
Describe the present invention in detail below in conjunction with the accompanying drawings.
Such as Fig. 1, a kind of friction speed Split type drill driver, mainly it is made up of shell body 1, power assembly 2, shaft coupling 3, power transmission shaft 5, one-level bit adapter 11, power assembly 2 is arranged on the top inside shell body 1, power assembly 2 is connected to the upper end of power transmission shaft 5 by shaft coupling 3, by-pass prot 4 is machined with power transmission shaft 5, the lower end of power transmission shaft 5 connects one-level bit adapter 11, wherein：Gear 7 is provided between power transmission shaft 5 and shell body 1, there are two grades of bit adapters 9 between one-level bit adapter 11 and shell body 1, the inside and outside composition planetary gear that engaged with power transmission shaft 5, shell body 1 respectively of gear 7 coordinates, and the central shaft of gear 7 is fixedly connected with two grades of bit adapters 9.
Above-described embodiment is further included：
Bearing 8 is installed between the shell body 1 and two grades of bit adapters 9, bearing 10 is installed between the one-level bit adapter 11 and two grades of bit adapters 9.
Sealing device 6 is installed between the power transmission shaft 5 and shell body 1.
The power assembly 2 is positive displacement motor or turbine motor.
The gear 7 is sealed in lubricating oil.
The outer wall of one-level bit adapter 11 and two grades of inwalls of drill bit 9 are equipped with anti-roll flute.
Preferred embodiment：Power assembly 2 is arranged on the top inside shell body 1, power assembly 2 is connected to the upper end of power transmission shaft 5 by shaft coupling 3, by-pass prot 4 is machined with power transmission shaft 5, sealing device 6 is installed between power transmission shaft 5 and shell body 1, power transmission shaft 5 is engaged with gear 7, gear 7 is engaged with shell body 1, the central shaft of gear 7 is fixedly mounted with two grades of bit adapters 9, bearing 8 is installed between shell body 1 and two grades of bit adapters 9, the lower end of power transmission shaft 5 connects one-level bit adapter 11, and bearing 10 is installed between one-level bit adapter 11 and two grades of bit adapters 9.
Friction speed Split type drill driver of the invention is arranged between BHA and drill bit, during drilling well, drilling fluid drives power assembly to rotate, power assembly drives drive axis by shaft coupling, on the one hand the rotation of power transmission shaft drives one-level bit adapter to rotate, another aspect drive gear is rotated, because power transmission shaft, gear, shell body constitute planetary gear structure.When power transmission shaft drive gear rotation, also drive gear is revolved round the sun around power transmission shaft, because central gear axis are fixedly connected with two grades of bit adapters, therefore two grades of bit adapters are also just driven to start to rotate, according to the gearratio of technical requirements design gear, it becomes possible to set the rotating ratio of one-level bit adapter and two grades of bit adapters, so as to reach two optimized parameter requirements of drill bit broken rock, in order to meet the isoparametric requirement of gearratio, the strength of gear teeth, gear can install multigroup, and be distributed on circumferencial direction.At the same time, drilling fluid by the by-pass prot on power transmission shaft by after power assembly, entering inside power transmission shaft, and reaches one-level bit adapter, enters bore hole annulus eventually through bit nozzle and returns to ground.Because gear is installed in closed space, and full of lubricating oil, the erosion of drilling fluid is reduced, so as to extend the service life of gear.Gear structure uses modularized design, not only improves fast assembling-disassembling and changes to meet the requirement of different drive ratios, is also beneficial to maintaining.Two grades of bearings between bit adapter and shell body, the requirement that two components are mutually rotated can be met, the pressure of the drill can be transmitted for two grades of bit adapters again, can also be according to the requirement of actual condition, sealing device special and lubricating arrangement are installed additional, to ensure the security reliability of special process condition lower bearing.The shell body of friction speed Split type drill driver can both be processed into linear, for straight well wellbore construction, can also be processed into certain bent angle, for the wellbore construction of the complex structural wells such as directional well, horizontal well, extended reach well, to meet the process specifications of different drilling conditions.
Xinjiang region deep-well, ultradeep well scene Full Scale Unit Analysis of application result show that upper formation drilling speed averagely improves 69.6%, and understratum drilling speed averagely improves 55.6%, and deflecting control is good；Sichuan province deep-well upper formation drilling speed averagely improves 71.7%, and understratum drilling speed improves 48.6%, and wellbore quality meets design standard, and the reduction of bit grinding loss rate realizes low energy consumption, the purpose of fast drilling well.
Claims (6)
1. friction speed Split type drill driver, mainly by shell body（1）, power assembly（2）, shaft coupling（3）, power transmission shaft（5）, one-level bit adapter（11）Composition, power assembly（2）Installed in shell body（1）Internal top, power assembly（2）By shaft coupling（3）It is connected to power transmission shaft（5）Upper end, power transmission shaft（5）On be machined with by-pass prot（4）, power transmission shaft（5）Lower end connects one-level bit adapter（11）, it is characterized in that：Power transmission shaft（5）And shell body（1）Between be provided with gear（7）, one-level bit adapter（11）And shell body（1）Between also have two grades of bit adapters（9）, gear（7）It is inside and outside respectively with power transmission shaft（5）, shell body（1）Engagement constitutes planetary gear and coordinates, gear（7）Central shaft and two grades of bit adapters（9）It is fixedly connected.
2. friction speed Split type drill driver according to claim 1, it is characterized in that：The shell body（1）With two grades of bit adapters（9）Between bearing is installed（8）, the one-level bit adapter（11）With two grades of bit adapters（9）Between bearing is installed（10）.
3. friction speed Split type drill driver according to claim 1 and 2, it is characterized in that：The power transmission shaft（5）With shell body（1）Between sealing device is installed（6）.
4. friction speed Split type drill driver according to claim 3, it is characterized in that：The power assembly（2）It is positive displacement motor or turbine motor.
5. friction speed Split type drill driver according to claim 4, it is characterized in that：The gear（7）It is sealed in lubricating oil.
6. friction speed Split type drill driver according to claim 5, it is characterized in that：The one-level bit adapter（11）Outer wall and two grades of drill bits（9）Inwall is equipped with anti-roll flute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005785.2A CN106930689A (en) | 2015-12-29 | 2015-12-29 | Friction speed Split type drill driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005785.2A CN106930689A (en) | 2015-12-29 | 2015-12-29 | Friction speed Split type drill driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930689A true CN106930689A (en) | 2017-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511005785.2A Pending CN106930689A (en) | 2015-12-29 | 2015-12-29 | Friction speed Split type drill driver |
Country Status (1)
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| CN (1) | CN106930689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101010481A (en) * | 2004-09-03 | 2007-08-01 | 林秉德 | A drilling apparatus having in-line extending wings and driving method thereof |
| CN201679442U (en) * | 2010-03-29 | 2010-12-22 | 中国石油集团川庆钻探工程有限公司 | Planetary structure for reverse torque of balance drilling equipment in drilling |
| 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 |
| CN103527097A (en) * | 2013-10-12 | 2014-01-22 | 中国石油大学(北京) | Active-adjusting type composite drill bit |
| 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 |
| CN205445463U (en) * | 2015-12-29 | 2016-08-10 | 中石化石油工程技术服务有限公司 | Split type drill driver ware of friction speed |
-
2015
- 2015-12-29 CN CN201511005785.2A patent/CN106930689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101010481A (en) * | 2004-09-03 | 2007-08-01 | 林秉德 | A drilling apparatus having in-line extending wings and driving method thereof |
| CN201679442U (en) * | 2010-03-29 | 2010-12-22 | 中国石油集团川庆钻探工程有限公司 | Planetary structure for reverse torque of balance drilling equipment in drilling |
| 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 |
| CN103527097A (en) * | 2013-10-12 | 2014-01-22 | 中国石油大学(北京) | Active-adjusting type composite drill bit |
| 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 |
| CN205445463U (en) * | 2015-12-29 | 2016-08-10 | 中石化石油工程技术服务有限公司 | Split type drill driver ware of friction speed |
Non-Patent Citations (1)
| Title |
|---|
| 王达: "《地质钻探手册》", 30 June 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
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Application publication date: 20170707 |