CN101025075B - Automatic inclination-proof drilling well apparatus - Google Patents
Automatic inclination-proof drilling well apparatus Download PDFInfo
- Publication number
- CN101025075B CN101025075B CN2006100081273A CN200610008127A CN101025075B CN 101025075 B CN101025075 B CN 101025075B CN 2006100081273 A CN2006100081273 A CN 2006100081273A CN 200610008127 A CN200610008127 A CN 200610008127A CN 101025075 B CN101025075 B CN 101025075B
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- drill collar
- collar body
- adjusting sleeve
- eccentric adjusting
- supporting section
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Abstract
The invention relates to an auto anti-deviation well drilling device, comprising a drill collar body, where one end of the drill collar body is a drill collar body supporting section, and equipped with piston cavity and through hole to connect the piston cavity with the intracavity of the drill collar body, and a matching piston is arranged in the piston cavity; the other end of the drill collar body is axially and firmly jacketed with an eccentric sleeve whose inner wall is equipped with semicircular groove corresponding to that on the outer wall of the drill collar body, and the circular cavity formed by the two semicircular grooves is filled with multiple steel balls; the outer diameter of the eccentric sleeve supporting block is greater than that of the drill collar body supporting section, and the outer diameters of the other parts of the eccentric sleeve are less than that of the drill collar body supporting section; the barycenter side of the eccentric sleeve makes a certain angle with the supporting block; according to the tumbler and lever principles, the invention can automatically generate very large deviation reducing force so as to prevent well deviation.
Description
Technical field
The present invention relates to a kind of automatic inclination-proof drilling well apparatus, especially a kind ofly can prevent the drilling rig of well deflection automatically on the drill collar body, belong to the drilling engineering technical field by eccentric stiffener and hydraulic piston mechanism are set.
Background technology
Drilling well is the basic means of subterranean resource exploration and developments such as petroleum gas, and the straight well deviation control with drilling straight well is one of technical barrier of often running into of situ of drilling well.When beating straight well, if hole deviation is excessive, can make well depart from underground design object, upset the layout of oil-gas field development.In inclined shaft, drill string easily leans against the borehole wall one side, and serious friction takes place during rotation, easily makes the drill string wearing and tearing and fractures, and also may cause accidents such as cave-in and key-seating sticking.Hole deviation exceeds standard also can influence cementing quality, and pumpingh well is also often caused the wearing and tearing of sucker rod and fractures.So the exploration and development that hole deviation exceeds standard to oil gas field all has very big harm.
And present employed drilling tool, comprise that pendulum assembly, tower drilling tool, packed hole assembly, off-axis drilling tool etc. mainly produce drop angle power by the weight of drill string itself, when hole angle was very little, drop angle power was generally very little, can not satisfy anti-oblique requirement when some block drilling well.
Summary of the invention
The purpose of this invention is to provide a kind of roly-poly principle and lever principle can utilized and give birth to very big drop angle power, thereby prevent the drilling rig of well deflection from movable property.
Automatic inclination-proof drilling well apparatus of the present invention includes the drill collar body, it is characterized in that: drill collar body one end is a drill collar body supporting section, is provided with plunger shaft, also is provided with through hole plunger shaft is communicated with the drill collar intracoelomic cavity, and coupling is provided with piston in plunger shaft.Axial restraint is arranged with eccentric adjusting sleeve in drill collar body the other end, and this eccentric adjusting sleeve inwall is provided with the semicircle ring shaped slot, and corresponding on the external wall of drill collar also have a semicircle ring shaped slot, is provided with a plurality of steel balls by being full of in these two the formed annulus of semicircle ring shaped slot chambeies.The external diameter of eccentric adjusting sleeve rest pad is greater than the external diameter of drill collar body supporting section, and the external diameter of eccentric adjusting sleeve other parts is less than the external diameter of drill collar body supporting section.The center of gravity limit and the rest pad of eccentric adjusting sleeve are angled.
The invention described above is utilized roly-poly principle, and when hole angle surpassed certain numerical value, the eccentric adjusting sleeve rest pad will be parked in the flash of well.At this moment when the flash of piston, can directly drill bit be pushed to low limit, produce the drop angle effect in well; When the low limit of piston in well, according to lever principle, it can also push drill bit to low limit by this fulcrum of eccentric adjusting sleeve rest pad, realizes the drop angle effect.Thereby this instrument can lower hole deviation very soon, makes well reach designing requirement.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is the sectional view of the embodiment of the invention.
Among the figure:
1 drill collar body, 11 through holes, 12 plunger shaft, 13 rail grooves, 14 inner chambers
15 supporting sections, 2 pistons, 21 stopper slots, 3 bolts, 4 eccentric adjusting sleeves
41 rest pads, 42 center of gravity limits, 43 rail grooves, 5 steel balls
The specific embodiment
As shown in drawings, drill collar body 1 one ends are drill collar body supporting section 15, are provided with plunger shaft 12, also be provided with through hole 11 plunger shaft 12 is communicated with drill collar intracoelomic cavity 14, and coupling is provided with piston 2 in plunger shaft 12.Bolt 3 one ends can prevent that piston 2 from dropping out plunger shaft 12 in the set stopper slot 21 in piston 2 surface.Eccentric adjusting sleeve 4 inwalls are provided with the ring-like rail groove 43 of semicircle, on corresponding drill collar body 1 outer wall half circular ring type rail groove 13 are arranged also, are provided with a plurality of steel balls 5 by being full of in these two the formed annulus of the ring-like rail groove of semicircle chambeies.The external diameter of eccentric adjusting sleeve rest pad 41 is greater than the external diameter of drill collar body supporting section 15, and the external diameter of eccentric adjusting sleeve other parts is less than the external diameter of drill collar body supporting section 15.Eccentric adjusting sleeve center of gravity limit 42 is angled with eccentric adjusting sleeve rest pad 41.
When drilling well, with drill bit directly be connected on this instrument have eccentric adjusting sleeve 4 one ends below.Owing to be connected by steel ball 5 between eccentric adjusting sleeve 4 and the drill collar body 1, eccentric adjusting sleeve 4 can not rotate with drill collar body 1.When hole angle was very little, eccentric adjusting sleeve 4 can slowly rotate under the moment of friction effect; When hole angle surpasses certain value, the turning moment that gravity produced of eccentric adjusting sleeve 4 is during greater than moment of friction, and it will be parked in a certain position in the well.Eccentric adjusting sleeve center of gravity limit 42 is 90 ° with angulation value the best of rest pad 41, and like this when eccentric adjusting sleeve 4 does not just change, eccentric adjusting sleeve rest pad 41 is just in time at the flash of well.Because the pressure of drill collar intracoelomic cavity 14 is greater than the pressure at annular space place, drilling fluid is released plunger shaft 12 by through hole 11 with piston 5, withstands on the borehole wall.Because piston 5 is to slide in the plunger shaft 12 of drill collar body 1, so it is with 1 rotation of drill collar body.When the flash of piston 5 in well, it can directly push drill bit to low limit on the one hand, realize the drop angle effect, eccentric adjusting sleeve rest pad 41 can be pushed away the borehole wall on the other hand, because the external diameter of eccentric adjusting sleeve other parts is less than the external diameter of drill collar body supporting section 15, so eccentric adjusting sleeve 4 no longer contacts with the borehole wall, can rotate freely, can guarantee that eccentric adjusting sleeve rest pad 41 is all the time at the flash of well; When the low limit of piston 5 in well, it raises drill string herein, because the external diameter of eccentric adjusting sleeve rest pad 41 is greater than the external diameter of drill collar body supporting section 15, eccentric adjusting sleeve rest pad 41 will withstand on the borehole wall of well flash, play the effect of fulcrum, according to lever principle, drill bit still is pushed to the low limit of well, produces the drop angle effect.
Like this, no matter piston 5 can both produce very big drop angle power on the still low limit of flash of well, and hole deviation can be lowered very soon.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (2)
1. automatic inclination-proof drilling well apparatus, include the drill collar body, it is characterized in that: drill collar body one end is a drill collar body supporting section, be provided with plunger shaft, also being provided with through hole is communicated with plunger shaft with the drill collar intracoelomic cavity, coupling is provided with piston in plunger shaft, axial restraint is arranged with eccentric adjusting sleeve in drill collar body the other end, this eccentric adjusting sleeve inwall is provided with the semicircle ring shaped slot, corresponding on the external wall of drill collar also have a semicircle ring shaped slot, be provided with a plurality of steel balls by being full of in these two the formed annulus of semicircle ring shaped slot chambeies, the external diameter of eccentric adjusting sleeve rest pad is greater than the external diameter of drill collar body supporting section, the external diameter of eccentric adjusting sleeve other parts is less than the external diameter of drill collar body supporting section, and the center of gravity limit and the rest pad of eccentric adjusting sleeve are angled.
2. automatic inclination-proof drilling well apparatus according to claim 1 is characterized in that: described piston face is provided with stopper slot, is provided with a bolt in the described drill collar body, and the end of this bolt is absorbed in the described stopper slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100081273A CN101025075B (en) | 2006-02-21 | 2006-02-21 | Automatic inclination-proof drilling well apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100081273A CN101025075B (en) | 2006-02-21 | 2006-02-21 | Automatic inclination-proof drilling well apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101025075A CN101025075A (en) | 2007-08-29 |
| CN101025075B true CN101025075B (en) | 2011-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100081273A Expired - Fee Related CN101025075B (en) | 2006-02-21 | 2006-02-21 | Automatic inclination-proof drilling well apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN101025075B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250982B (en) * | 2008-04-02 | 2011-12-07 | 刘宝林 | Mechanical automatic vertical drilling tool |
| CN101566044B (en) * | 2008-04-22 | 2012-11-21 | 中国石化集团胜利石油管理局钻井工艺研究院 | Automatic vertical well drilling tool utilizing aerodynamics |
| CN101839113B (en) * | 2010-05-06 | 2012-07-04 | 中国石油集团钻井工程技术研究院 | Underground deviation-correcting energy extraction device |
| CN101871320B (en) * | 2010-05-26 | 2012-09-26 | 中国地质大学（武汉） | Automatic hydraulic offset-correcting method for horizontal drilling and specific drilling tool |
| CN103452480B (en) * | 2013-08-13 | 2015-11-18 | 燕山大学 | Gravity pushing type vertical drilling slope-preventing device |
| CN103527084B (en) * | 2013-08-13 | 2016-01-06 | 燕山大学 | Gravity directional type vertical drilling slope-preventing device |
| CN104314470B (en) * | 2014-10-27 | 2016-09-14 | 中国石油集团西部钻探工程有限公司 | Vertical drilling tool |
| CN112360349B (en) * | 2020-12-10 | 2022-01-04 | 西南石油大学 | Mechanical automatic vertical drilling tool |
| CN112761527B (en) * | 2021-03-03 | 2022-12-27 | 辽宁石油化工大学 | Automatic anti-inclination drilling device |
Citations (4)
| 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 |
| CN1519455A (en) * | 2003-01-22 | 2004-08-11 | 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 |
| CN2895694Y (en) * | 2006-02-21 | 2007-05-02 | 中国石油大学(北京) | Automatic inclination-resisting well-drilling apparatus |
-
2006
- 2006-02-21 CN CN2006100081273A patent/CN101025075B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| CN1519455A (en) * | 2003-01-22 | 2004-08-11 | 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 |
| CN2895694Y (en) * | 2006-02-21 | 2007-05-02 | 中国石油大学(北京) | Automatic inclination-resisting well-drilling apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 殷朝阳，等.直井防斜钻具组合技术综述.《天然气工业》.2000,第20卷(第1期),50-53. |
| 殷朝阳等.直井防斜钻具组合技术综述.《天然气工业》.2000,第20卷(第1期),50-53. * |
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| Publication number | Publication date |
|---|---|
| CN101025075A (en) | 2007-08-29 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20120221 |