CN103061671B - Underground anti-drag twisting reducer - Google Patents
Underground anti-drag twisting reducer Download PDFInfo
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- CN103061671B CN103061671B CN201110325075.3A CN201110325075A CN103061671B CN 103061671 B CN103061671 B CN 103061671B CN 201110325075 A CN201110325075 A CN 201110325075A CN 103061671 B CN103061671 B CN 103061671B
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- axle
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- shell
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Abstract
The invention discloses an underground anti-drag twisting reducer, and belongs to the field of underground drilling tools. The technical scheme is that a mandrel is arranged inside a shell, the top of the mandrel is in plugging-in fit with the shell, a bearing and a spring are arranged between the top of the mandrel and the shell, the middle of the mandrel and the shell are combined in two sections, a mandrel spline arranged on the mandrel and a shell spline arranged on the shell are in mutual plugging-in fit in one section, a planetary gear set arranged on the mandrel and a gear ring arranged on the shell are mutually matched with each other in a rotating mode in the other section, , and a sealing member which is sealed with the mandrel in a sliding manner is arranged at the lower end of the shell. The underground anti-drag twisting reducer has the advantages of being simple in structure, convenient to operate and install, safe and reliable.
Description
Technical field
The invention belongs to a kind of underground anti-drag twisting reducer of down hole drill field of tool, be mainly used in the fields such as oil and gas well drilling, geological prospecting, mine probing.
Background technology
In the process of oil and gas well drilling, geological prospecting, mine probing, the complex structural well application such as directional well, horizontal well, high angle hole, extended reach well are more and more extensive, for drilling technology, have higher requirement.In steerable drilling process, the slide drilling System Implementation drillng operation that domestic main employing is power by MTR, now power drilling tool drives bit to creep into, and drill string itself does not rotate, but because the effect of deadweight lies low in shaft bottom, cause frictional resistance to be difficult to more greatly effectively apply the pressure of the drill; Meeting under the prerequisite of Drilling Design, part well section can adopt combined drilling technology, i.e. drill string and downhole mud motor rotary drilling simultaneously reduces loss of machine of torque for reducing frictional resistance, has certain positive role.Abroad owing to having rotary steerable drilling technology, frictional resistance problem in the time of can overcoming steerable drilling completely, the domestic research of just actively developing rotary steerable drilling technology, but because external technical monopoly and the restriction of critical component, also there is no at present successful industrial applications, only rely on import or rent the product of offshore company, greatly increased drilling well integrated cost.
Summary of the invention
The object of the invention is in order to reduce to greatest extent the impact of frictional resistance, do not having under the condition of rotary steerable drilling equipment, give full play to the function of existing slurry power motor, become conventional slide drilling mode into rotary drilling mode, improve the efficiency of steerable drilling construction operation, reduce drilling cost, improve wellbore quality and the drilling safety of the complex structural wells such as directional well, horizontal well, high angle hole, extended reach well, and a kind of underground anti-drag twisting reducer proposing.
Realizing the technical scheme that above-mentioned purpose adopts is: axle is arranged on enclosure interior, axle top is installed bearing and spring therebetween after coordinating with housing grafting, two sections of combinations are divided with housing in axle middle part, one section is provided in a side of axle spline in axle and is located at the cooperation of mutually pegging graft of housing spline on housing, two sections of gear rings that are provided in a side of the planetary gearsets in axle and are located on housing rotate cooperation mutually, are provided with the seal with axle slipper seal in housing lower end.
Described planetary gearsets 9 is comprised of three symmetrical big or small planetary gearsets 12 and a central gear 13, size planetary gearsets 12 is arranged on pinion frame 11, and big or small planetary gearsets 12 can be rotated around central gear 13 with pinion frame 11.
In axle upper end and housing joint portion, sealing ring is set.
Function of the present invention: underground anti-drag twisting reducer is arranged between drill string and device for subsurface measuring, and enclosure interior is processed with housing spline, gear ring, and axle is arranged on enclosure interior, is processed with axle spline, planetary gearsets in axle.While putting drilling assembly tool-face orientation, above carry drill string, make housing spline and axle spline engagement, well head TORQ is passed to device for subsurface measuring and slurry power motor by drill string, underground anti-drag twisting reducer, meets tool-face orientation designing requirement, carry out angle buildup interval while creeping into, transfer drilling assembly, behind drill bit contact shaft bottom, housing phase center roller still continues to move downward, now housing spline and axle spline depart from, gear ring and planetary gearsets engagement, well head TORQ is passed to underground anti-drag twisting reducer housing by drill string, and drive housing to rotate, while driving the broken rock of bit due to MTR, produce reaction torque, make MTR have the trend of reversion, easily cause tool-face orientation deviation, therefore utilize the rotation of planetary gearsets to apply certain moment of torsion to MTR, with stabilizing tool face orientation, remain unchanged, and the rotation of planetary gearsets is driven by drill string, therefore when angle buildup interval creeps into, both stablized tool-face orientation constant, can make drill string rotating again simultaneously, reached the object that reduces frictional resistance, carry out steady lower curved section while creeping into, suitably reduce the pressure of the drill, be that underground anti-drag twisting reducer housing phase center roller moves upward, now gear ring and planetary gearsets depart from, and housing spline and axle spline engagement, well head TORQ is passed to MTR by drill string, underground anti-drag twisting reducer and realizes combined drilling mode.Utilize the underground anti-drag twisting reducer can be under the prerequisite not making a trip, completing slides creeps into the phase co-conversion with compound drilling, and when slip is crept into, can make drill string unitary rotation to reduce frictional resistance, reach and improve wellbore construction efficiency, reduce the object of drilling well integrated cost.
Meanwhile, underground anti-drag twisting reducer also have advantages of simple in structure, easy to operate, be convenient to install, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the planetary gearsets structure enlarged drawing of A-A position in Fig. 1.
1-housing, 2-bearing, 3-spring, 4-sealing ring, 5-axle, 6-housing spline, 7-axle spline, 8-gear ring, 9-planetary gearsets, 10-seal, 11-pinion frame, 12-size planetary gearsets, 13 central gears in figure.
The specific embodiment
Below in conjunction with accompanying drawing, describe the present embodiment in detail
As Fig. 1, axle 5 is arranged on housing 1 inside, bearing 2 and spring 3 are installed between axle 5 upper ends and housing 1, housing spline 6 coordinates with axle spline 7, gear ring 8 coordinates with planetary gearsets 9, planetary gearsets 9 and pinion frame 11 are arranged in axle 5, and sealing ring 4 and seal 10 are arranged between housing 1 and axle 4.
As Fig. 2, planetary gearsets 9 is comprised of three symmetrical big or small planetary gearsets 12 and a central gear 13, size planetary gearsets 12 is arranged on pinion frame 11, and big or small planetary gearsets 12 can be rotated around central gear 13 with pinion frame 11.
Claims (3)
1. underground anti-drag twisting reducer, it is characterized in that, axle (5) is arranged on housing (1) inside, axle (5) top is installed bearing (2) and spring (3) therebetween after coordinating with housing (1) grafting, axle (5) middle part and housing (1) minute two sections of combinations, one section of housing spline (6) that is provided in a side of the axle spline (7) in axle (5) and is located on housing (1) is mutually pegged graft and is coordinated, two sections are provided in a side of the planetary gearsets (9) in axle (5) and are located at gear ring (8) the rotation cooperation mutually on housing (1), in housing (1) lower end, be provided with the seal (10) with axle (5) slipper seal.
2. underground anti-drag twisting reducer according to claim 1, it is characterized in that, described planetary gearsets (9) is comprised of three symmetrical big or small planetary gearsets (12) and a central gear (13), it is upper that size planetary gearsets (12) is arranged on pinion frame (11), and big or small planetary gearsets (12) can be rotated around central gear (13) with pinion frame (11).
3. underground anti-drag twisting reducer according to claim 1 and 2, is characterized in that, in axle (5) upper end and housing (1) joint portion, sealing ring (4) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325075.3A CN103061671B (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325075.3A CN103061671B (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103061671A CN103061671A (en) | 2013-04-24 |
| CN103061671B true CN103061671B (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110325075.3A Active CN103061671B (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103061671B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350912B (en) * | 2015-11-12 | 2017-12-22 | 中石化石油工程技术服务有限公司 | Downhole tool for reducing friction resistance of sliding directional drilling |
| CN106285514A (en) * | 2016-10-18 | 2017-01-04 | 裴绪建 | A kind of drill string rotating pressurizing tool |
| 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 |
| CN111255433B (en) * | 2020-03-02 | 2021-07-27 | 北京四利通控制技术股份有限公司 | Anti-sticking anti-drag automatic torsional pendulum control method for well drilling sliding drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040238221A1 (en) * | 2001-07-16 | 2004-12-02 | Runia Douwe Johannes | Steerable rotary drill bit assembly with pilot bit |
| CN2825915Y (en) * | 2005-04-19 | 2006-10-11 | 杜炊 | guide rail spline directional drilling tool |
| CN101608535A (en) * | 2009-06-29 | 2009-12-23 | 扬州天业石油机械有限公司 | Mechanical multidirectional absorber |
| CN101705794A (en) * | 2009-11-27 | 2010-05-12 | 西南石油大学 | Bidirectional anti-fatigue short circuit for drill column |
| CN202300198U (en) * | 2011-10-24 | 2012-07-04 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
-
2011
- 2011-10-24 CN CN201110325075.3A patent/CN103061671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040238221A1 (en) * | 2001-07-16 | 2004-12-02 | Runia Douwe Johannes | Steerable rotary drill bit assembly with pilot bit |
| CN2825915Y (en) * | 2005-04-19 | 2006-10-11 | 杜炊 | guide rail spline directional drilling tool |
| CN101608535A (en) * | 2009-06-29 | 2009-12-23 | 扬州天业石油机械有限公司 | Mechanical multidirectional absorber |
| CN101705794A (en) * | 2009-11-27 | 2010-05-12 | 西南石油大学 | Bidirectional anti-fatigue short circuit for drill column |
| CN202300198U (en) * | 2011-10-24 | 2012-07-04 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
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| Publication number | Publication date |
|---|---|
| CN103061671A (en) | 2013-04-24 |
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