CN101250982B - Mechanical automatic vertical drilling tool - Google Patents
Mechanical automatic vertical drilling tool Download PDFInfo
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- CN101250982B CN101250982B CN200810090628XA CN200810090628A CN101250982B CN 101250982 B CN101250982 B CN 101250982B CN 200810090628X A CN200810090628X A CN 200810090628XA CN 200810090628 A CN200810090628 A CN 200810090628A CN 101250982 B CN101250982 B CN 101250982B
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- outer tube
- drilling tool
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- eccentric
- bearing
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Abstract
The invention discloses a mechanical automatic vertical drilling tool, comprising an inner pipe and an outer pipe, the lower part of the inner pipe is connected with a bit, the inner pipe and the outer pipe are connected through a bearing, an eccentric block and an outer pipe chamber are arranged between the outer pipe and the inner pipe, an eccentric ring and a roller are arranged in the outer pipe chamber, the roller is arranged inside the eccentric ring, the eccentric block is arranged on the outer pipe via the bearing, a hollow part of the eccentric block is connected with a transmission shaft which is through the roller via the bearing, the outer pipe is encircled on the pipe wall of the eccentric ring and is uniformly provided with openings, a radial extension part is arranged at each opening. The drilling tool is simple in structure, low in cost, realizes dynamic deviation rectifying by performing automatic adjustment of the gravity position of the eccentric block when the drilling tool deviates, ensuring the precision of vertically drilling ahead; meanwhile, the structure of the drilling tool can better adapt to complicated stratum.
Description
Technical field
The present invention relates to the drilling tool that a kind of drilling technology is used.
Background technology
Along with the development of drilling technology, the boring that various high verticalities require is more and more, and in drilling process, because the self reason of the complexity of formation drilling and boring mechanic, drilling technology, hole deviation almost is inevitable.
China's main packed hole assembly and pendulum assembly of adopting in the vertical brill process of deep hole and oil deep-well is passive tiltedly anti-, but under bad ground, and this two covers method is difficult to reach the target that gets out high verticality boring not only fast but also that economize.
" design of automatic vertical drilling tool and the research of autocontrol method " special project has been set up in the drilling well of Oil Exploration in China developmental research institute, designed a kind of downhole closed loop automatic vertical drilling tool, this automatic vertical drilling tool comprises down-hole microprocessor, the controlled stabilizer of hole angle measuring transducer and down-hole etc., but controlled stabilizer mainly is made up of the guide pad of four independent telescopes.Hydraulic system can guarantee the operating pressure requirement of well straightening substantially in this system, but sealing performance is bad.In this cover hydraulic system, be to utilize the displacement of control valve to come controlled pressure at present, because the restriction of space and radiating condition, the displacement of valve core is less, has influenced the output stability of high end pressure; The electromagnetic pressure proportional control valve is had relatively high expectations to the cleannes of oil, the pollutant effect of hydraulic oil the performance of valve.
Form by single-chip microcomputer, level gauge, telescoping ram in the research approach of " the intelligent automatic Vertical Drilling System " set up by Shandong coal geological exploration office, finish deviational survey and well straightening work.Telescoping ram distributes alternately with 90 °, and eight electromagnetic throttle valves of single-chip microcomputer management are to control four hydraulic sidewall contact device work.The sealing performance of this system's mesohigh oil is bad, and the vibration of drilling tool has a significant impact the measurement of gravity accelerometer and level gauge.
The key project that China Geological Survey Bureau sets up " microcomputer is controlled automatically to vertical drill system " mainly comprises generator, electronic-controlled installation, inclinometer, hydraulic system and support piston.By electromagnetic levitation type accelerometer deviational survey, the result passes to electronic-controlled installation with skew back, thereby controlled hydraulic system realizes the control to support piston.Also there is the sealing problem of hydraulic oil in this system, and vibration of drilling tool simultaneously and rotation will have a strong impact on the directional survey result of accelerometer.
Summary of the invention
Problem at prior art exists the object of the present invention is to provide a kind of requirement that can guarantee verticality, and simple in structure, and cost is low, and is strong to the compliance of bad ground, the mechanical automatic vertical drilling tool that efficient is high.
The present invention solves the technical scheme that its technical problem takes: a kind of mechanical automatic vertical drilling tool, pipe and outer tube in comprising, the pipe bottom is connected with drill bit in described, connect by bearing between pipe and the outer tube in described, between described outer tube and interior pipe, be provided with eccentric block and outer tube cavity, in described outer tube cavity, be provided with eccentric hoop, and roller or cam, described roller or cam are positioned at eccentric hoop, described eccentric block is installed on the outer tube by bearing, described roller or cam one side contact with eccentric hoop, opposite side with do not rotate the cavity that outer cast becomes in side contacts, the hollow parts of described eccentric block is connected with power transmission shaft, described power transmission shaft passes in described roller or the cam by bearing, described outer tube evenly is provided with opening on around the tube wall of eccentric hoop, at each opening part radial expansion spare is installed.
Described mechanical automatic vertical drilling tool, the resultant direction of the suffered hole wall active force of described radial expansion spare in roller or cam position in the radial direction, and is identical with the bottom surface direction of drilling tool incline direction.
Described mechanical automatic vertical drilling tool, described radial expansion spare is support claw or piston.
Described mechanical automatic vertical drilling tool, described radial expansion spare is three, is 120 degree branches on the lateral cross section of described outer tube cavity.
Described mechanical automatic vertical drilling tool, described roller are at least one.
Described mechanical automatic vertical drilling tool, the bearing that connects between described interior pipe and the outer tube is two groups, and one group is arranged on described eccentric block top, and another group is arranged on described outer tube cavity bottom.
Eccentric block of the present invention, roller, eccentric hoop and support claw are the key component of four designs, utilize bearing to realize managing in the rotation and not rotating separating of outer tube, by bearing eccentric block is fixed on the non-rotary outer tube, in the lower end of eccentric block hollow parts central point is a power transmission shaft, and power transmission shaft is connected with roller by bearing.Roller and eccentric hoop be not by rotating in the cavity that outer tube forms, and eccentric hoop can freely rotate in cavity.Roller one side contacts with eccentric hoop, opposite side with do not rotate the cavity that outer cast becomes in side contacts, eccentric hoop contacts with support claw, eccentric throw and eccentric action of gravity according to eccentric block, when the drilling tool run-off the straight, the eccentric block entity part can be utilized the adjusting of self center of gravity, rotates to or level off to the bottom surface of incline direction automatically.When eccentric block rotates to automatically or levels off in the process of bottom surface of incline direction, eccentric block hollow part branch rotates to or levels off to the high face of incline direction automatically, eccentric block automatically can be regulated the torsional moment that be produced simultaneously and be delivered on the roller by power transmission shaft, the hollow parts of realizing roller and eccentric block rotates to or levels off to the high face of incline direction synchronously.Under the effect of roller, can force eccentric hoop constantly to adjust eccentric position, the moment that frictional force produced between roller and the eccentric hoop can be offset the torsional moment that eccentric block produces simultaneously.When eccentric hoop is constantly adjusted eccentric position, can produce extruding, thereby support claw is produced a radially outside active force support claw, impel support claw to stretch out, affact on the hole wall, thereby hole wall is produced radial thrust.When hole wall bears the thrust of support claw generation, can be to support claw generation effect counter-force.When support claw bears the effect counter-force of hole wall, power can be delivered on the eccentric hoop, eccentric hoop is delivered to power on the roller again, and roller is delivered to power and does not rotate the cavity inboard that outer cast becomes, thereby power is delivered on the non-rotary outer tube.When power is delivered on the non-rotary outer tube, by the bearing between the inner and outer pipes, again power is delivered on the interior pipe, thereby masterpiece is used on the drill bit, realize the well straightening of inclination drilling tool.
The present invention has overcome the existing problem of existing vertical drilling tool, this mechanical automatic vertical drilling tool comprises eccentric block, roller, eccentric hoop and support claw, do not comprise the electromagnetic measurement parts, do not comprise the hydraulic oil system, thereby avoided the down-hole equipment vibration and rotated influence to the skew back parts, avoided the sealing problem of hydraulic oil system.This drilling tool structure is simple, cost is low, rely on the automatic adjusting of eccentric block position of centre of gravity when the drilling tool deflection, thereby realize dynamic well straightening, guaranteed the precision of vertically creeping into drilling tool, this drilling tool has carried out optimal design to support claw simultaneously, can better adapt to bad ground.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 be the outer lumen body portion of figure sectional view,
The specific embodiment
As Fig. 1, shown in 2, mechanical automatic vertical drilling tool, pipe 3 and outer tube 1 in comprising, interior pipe 3 bottoms are connected with drill bit, between interior pipe 3 and outer tube 1, be provided with bearing 2 and bearing 9, between interior pipe between bearing 2 and the bearing 9 and outer tube, be provided with eccentric block 5 and outer tube cavity 7, be provided with eccentric hoop 8 and roller 12 outside in the tube chamber 7, roller 12 is positioned at eccentric hoop 8, eccentric block 5 is connected with outer tube 1 with bearing 6 by bearing 4, hollow parts at eccentric block 5 is connected with power transmission shaft 10, power transmission shaft 10 is located in the roller 12 by bearing 11 and 14, evenly have three openings at outer tube 1 on around the tube wall of eccentric hoop 8, sleeve 13 is installed in each opening, the support claw 15 of radial expansion is installed in sleeve 13.
At work, when the drilling tool run-off the straight, eccentric block 5 entity part can rotate to or level off to the bottom surface of incline direction automatically, eccentric block 5 hollow part branches rotated to or leveled off to the high face of incline direction automatically this moment, simultaneously eccentric block is automatically regulated the moment of torsion that is produced and be delivered on the roller 12 by power transmission shaft 10, the hollow parts of realizing roller 12 and eccentric block 5 rotates to or levels off to the high face of incline direction synchronously.
Under the effect of roller 12, force eccentric hoop 8 constantly to adjust eccentric position, the moment that frictional force produced between roller 12 and the eccentric hoop 8 can be offset the torsional moment that eccentric block 5 is produced simultaneously.
When eccentric hoop 8 is constantly adjusted eccentric position, can push support claw 15, thereby support claw 15 is produced a radially outside active force, impel support claw 15 to stretch out, affact on the hole wall, thereby hole wall is produced radial thrust.
When hole wall bears the thrust of support claw 15 generations, can be to support claw 15 generation effect counter-forces.When support claw 15 bears the effect counter-force of hole wall, power can be delivered on the eccentric hoop 8, eccentric hoop 8 is delivered to power on the roller 12 again, and roller 12 is delivered to power and does not rotate outer tube cavity 7 inboards that outer tube 1 type becomes, thereby power is delivered on the non-rotary outer tube 1.
When power is delivered on the non-rotary outer tube 1, by the bearing between the inner and outer pipes 29, manage on 3 in again power being delivered to, thereby masterpiece is used on the drill bit, realize the well straightening of inclination drilling tool.
In the present invention, the resultant direction of three suffered hole wall active forces of support claw in the roller position in the radial direction, identical with the bottom surface direction of drilling tool incline direction, so the roller position will influence the precision of well straightening, be the precision that the central point position of eccentric block hollow parts will influence well straightening, promptly the central point position of eccentric block solid section will influence the precision of well straightening.Known by force analysis, the eccentric moment that eccentric block produced can overcome roller and eccentric hoop and not rotate the frictional resistance moment that produces between the outer tube cavity inboard, so the central point of eccentric block solid section can rotate to or level off to the bottom surface of incline direction, guaranteed the precision of well straightening.
In the present invention, the design of roller can design by cam or other and realize.Support claw can have piston to substitute realization, and three or more can be arranged.The roller of transfer torque also can be for one or more.
In the present invention, have the following advantages: 1, do not comprise the electromagnetic measurement parts, do not comprise the hydraulic oil system, thereby avoided the down-hole equipment vibration and rotated influence, avoided the sealing problem of hydraulic oil system to the skew back parts.
2, this drilling tool structure is simple, cost is low.
3, this drilling tool relies on the automatic adjusting of eccentric block position of centre of gravity when the drilling tool deflection, and by the accurate transmission of roller and eccentric hoop realizable force, thereby realization has guaranteed the precision of vertically creeping into to the dynamic well straightening of drilling tool.
4, this drilling tool is grabbed support and has been carried out optimal design, can better adapt to bad ground.
Claims (5)
1. mechanical automatic vertical drilling tool, pipe and outer tube in comprising, the pipe bottom is connected with drill bit in described, it is characterized in that: connect by bearing between pipe and the outer tube in described, between described outer tube and interior pipe, be provided with eccentric block and outer tube cavity, in described outer tube cavity, be provided with eccentric hoop, and roller or cam; Described roller or cam are positioned at eccentric hoop, described eccentric block is installed on the outer tube by bearing, one side of described roller or cam contacts with eccentric hoop, opposite side contacts with the outer tube cavity that does not rotate outer tube formation is inboard, the hollow parts of described eccentric block is connected with power transmission shaft, described power transmission shaft passes in described roller or the cam by bearing, and described outer tube evenly is provided with opening on around the tube wall of eccentric hoop, at each opening part radial expansion spare is installed; The resultant direction of the suffered hole wall active force of described radial expansion spare in roller or cam position in the radial direction, and the bottom surface when pointing to drilling tool and tilting.
2. mechanical automatic vertical drilling tool according to claim 1 is characterized in that: described radial expansion spare is support claw or piston.
3. mechanical automatic vertical drilling tool according to claim 1 is characterized in that: described radial expansion spare is three, is 120 degree and is distributed on the lateral cross section of described outer tube cavity.
4. mechanical automatic vertical drilling tool according to claim 1 is characterized in that: described roller is at least one.
5. mechanical automatic vertical drilling tool according to claim 1 is characterized in that: the bearing that connects between described interior pipe and the outer tube is two groups, and one group is arranged on described eccentric block top, and another group is arranged on described outer tube cavity bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810090628XA CN101250982B (en) | 2008-04-02 | 2008-04-02 | Mechanical automatic vertical drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810090628XA CN101250982B (en) | 2008-04-02 | 2008-04-02 | Mechanical automatic vertical drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101250982A CN101250982A (en) | 2008-08-27 |
| CN101250982B true CN101250982B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810090628XA Expired - Fee Related CN101250982B (en) | 2008-04-02 | 2008-04-02 | Mechanical automatic vertical drilling tool |
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| CN (1) | CN101250982B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165051B (en) * | 2013-05-17 | 2017-07-07 | 中国石油化工股份有限公司 | A kind of well high-low side identification mechanism for automatic vertical drill tools |
| CN103527084B (en) * | 2013-08-13 | 2016-01-06 | 燕山大学 | Gravity directional type vertical drilling slope-preventing device |
| CN104196449B (en) * | 2014-08-19 | 2016-03-23 | 中煤矿山建设集团有限责任公司 | Sinking by boring vertically creeps into drilling tool |
| CN106837202B (en) * | 2017-04-13 | 2019-09-06 | 长沙矿山研究院有限责任公司 | Geological prospecting double-layer drill rod and its supporting drilling tool for negative pressure coring |
| CN108561081B (en) * | 2018-01-24 | 2023-08-08 | 西南石油大学 | Turbine cam type downhole centralizer |
| CN108278083B (en) * | 2018-01-24 | 2023-08-01 | 西南石油大学 | Downhole tool for realizing automatic vertical drilling by utilizing cam four-bar mechanism |
| CN110965940B (en) * | 2019-12-24 | 2021-01-26 | 四川宝石机械石油钻头有限责任公司 | Automatic vertical drilling device |
| CN112360349B (en) * | 2020-12-10 | 2022-01-04 | 西南石油大学 | Mechanical automatic vertical drilling tool |
Citations (7)
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| DE3403239C1 (en) * | 1984-01-31 | 1985-06-27 | Christensen, Inc., Salt Lake City, Utah | Devices for optional straight or directional drilling in underground rock formations |
| CN2755265Y (en) * | 2004-08-10 | 2006-02-01 | 新疆石油管理局钻井工艺研究院 | Automatic device against inclination |
| CN1243904C (en) * | 2003-01-22 | 2006-03-01 | 石油大学(北京) | Equipment prevents a vertical drilling well from deflexion |
| CN2784570Y (en) * | 2005-04-14 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Mechanical automatic vertical drilling tool |
| CN2851503Y (en) * | 2005-10-09 | 2006-12-27 | 中国石油大学(北京) | Hydraulic automatic anti-deflection drilling tools |
| CN101025075A (en) * | 2006-02-21 | 2007-08-29 | 中国石油大学(北京) | Automatic inclination-proof drilling well apparatus |
| CN200992951Y (en) * | 2006-12-21 | 2007-12-19 | 新疆石油管理局钻井工艺研究院 | Vertical drilling tool |
-
2008
- 2008-04-02 CN CN200810090628XA patent/CN101250982B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3403239C1 (en) * | 1984-01-31 | 1985-06-27 | Christensen, Inc., Salt Lake City, Utah | Devices for optional straight or directional drilling in underground rock formations |
| CN1243904C (en) * | 2003-01-22 | 2006-03-01 | 石油大学(北京) | Equipment prevents a vertical drilling well from deflexion |
| CN2755265Y (en) * | 2004-08-10 | 2006-02-01 | 新疆石油管理局钻井工艺研究院 | Automatic device against inclination |
| CN2784570Y (en) * | 2005-04-14 | 2006-05-31 | 中国石化集团胜利石油管理局钻井工艺研究院 | Mechanical automatic vertical drilling tool |
| CN2851503Y (en) * | 2005-10-09 | 2006-12-27 | 中国石油大学(北京) | Hydraulic automatic anti-deflection drilling tools |
| CN101025075A (en) * | 2006-02-21 | 2007-08-29 | 中国石油大学(北京) | Automatic inclination-proof drilling well apparatus |
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| CN101250982A (en) | 2008-08-27 |
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Granted publication date: 20111207 Termination date: 20140402 |