CN2282057Y - Eccentric anti-inclining drill combination - Google Patents
Eccentric anti-inclining drill combination Download PDFInfo
- Publication number
- CN2282057Y CN2282057Y CN 96249363 CN96249363U CN2282057Y CN 2282057 Y CN2282057 Y CN 2282057Y CN 96249363 CN96249363 CN 96249363 CN 96249363 U CN96249363 U CN 96249363U CN 2282057 Y CN2282057 Y CN 2282057Y
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- China
- Prior art keywords
- drill
- eccentric
- drill collar
- convex block
- centralizer
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an eccentric anti-inclining drill combination. The utility model is characterized in that the proper position of a drill collar between a drill bit and a centralizer is connected with a short eccentric drill collar, in a good enforced example, the cross section of the short eccentric drill collar forms a combination shape that centering positioning lugs and an unbalanced belt are convexly arranged on a hollow cylindrical sruface, the number of the centering positioning lugs is two and the centering positioning lugs are arranged symmetrically around the center of a circle with an angle of 180DEG, and the unbalanced belt is positioned between the two centering positioning lugs. The utility model reasonably designs the geometric shape of the short eccentric drill collar so that the short eccentric drill collar has enough centrifugal force and good centering action in the rotation process, and the short eccentric drill collar is matched into a reasonable lower drill combination so that the eccentric anti-inclining drill combination farthest reduces the axial rotating angle of the drill bit and increases the dropping force of a drill.
Description
The utility model relates to petroleum drilling well drilling tool, a kind of specifically eccentric anti-deflection drilling tool combination.
The verticality of oil drilling is a technical barrier always, and it influences the well-digging cost and the oil field development of oil well, and anti-deflection drilling tool is that the drilling assembly of using is designed for deviation control with drilling straight well in the oil field in the straight well drilling process.The anti-deflection drilling tool combination of current use has two big class kind, that is: packed hole assembly and pendulum assemblies.Packed hole assembly promptly adopts full size cun centralizer (such as boring the centralizer that φ 215mm well need adopt φ 214mm), the drilling tool integral rigidity is bigger, drilling tool is not flexible depressing than wammel, the drill axis corner is less, and its anti-oblique effect is better, and in case the non-constant of its well straightening effect of hole deviation takes place, and because the borehole wall and centralizer gap are less, very easily cause the undergauge bit freezing, therefore adopt the drag bit drilling well, seldom use this drilling assembly; Pendulum assembly is to utilize the following drilling tool pendulum force of centralizer to prevent tiltedly or well straightening, therefore in straight well, there is not anti-tiltedly effect, because its rigidity is less, it is crooked easily to add the top and the bottom drill collar, make drill bit produce bigger axial inclination, hole deviation easily taking place, therefore have to use low the pressure of the drill, influences rate of penetration and quality.
The purpose of this utility model is, overcomes weak point in the prior art, and a kind of eccentric anti-deflection drilling tool combination is provided, and it can adapt to big the pressure of the drill creeps into fast, and anti-oblique well straightening ability is stronger.
The purpose of this utility model is achieved in that
A kind of eccentric anti-deflection drilling tool combination, mainly by drill bit, drill collar, centralizer are formed, and it is characterized in that: the appropriate location of the drill collar between drill bit and centralizer is connected with eccentric stub boring quickly.
In preferred embodiment, described eccentric stub boring cross section quickly is for to be provided with the combined shaped of setting upright locating convex block and laying particular stress on band in an open circles cylinder epirelief, the described locating convex block of setting upright is two, become 180 ° to be symmetrical arranged with the center of circle, the described band of laying particular stress on is set upright between the locating convex block at two, and the face of cylinder external diameter that this verandah of setting upright locating convex block and laying particular stress on band is the face of cylinder and lays particular stress on band equals to set upright the face of cylinder external diameter of locating convex block.
During enforcement, for the drilling assembly of not establishing centralizer, described eccentric stub boring riding position quickly is on the drill collar within 15 meters on the distance drill bit.
The utility model has following actively useful effect:
The unification of this drill set is according to bit size and the following drill collar stiffness of centralizer, appropriate design eccentric stub boring geometry quickly, make it in rotary course, have enough centrifugal force and centralizing function preferably, the 2nd, with the rational bottomhole assembly of the quickly supporting one-tenth of above-mentioned eccentric stub boring, make it reduce the drill axis corner to greatest extent, increase the drop angle power of drilling tool.
Now in conjunction with the accompanying drawings with preferred embodiment:
Fig. 1 is an eccentric stub boring shape of cross section schematic diagram quickly;
Fig. 2 is an eccentric anti-deflection drilling tool bottom combination schematic diagram;
Fig. 3 Fig. 4 Fig. 5 is pendulum assembly and the contrast of eccentric anti-deflection drilling tool effect, wherein
Fig. 3 is a pendulum assembly;
Fig. 4 lays particular stress on band for eccentric anti-deflection drilling tool and goes to the borehole wall;
Fig. 5 lays particular stress on band for eccentric anti-deflection drilling tool and goes to down the borehole wall;
Eccentric anti-deflection drilling tool combination of the present utility model, mainly by drill bit 4, drill collar 5, centralizer 1 are formed, and the appropriate location of the drill collar 5 between drill bit 4 and centralizer 1 is connected with eccentric stub boring quickly 2.
Described eccentric stub boring cross section is quickly set upright locating convex block and the combined shaped that lays particular stress on 3 for being provided with in an open circles cylinder epirelief, the described locating convex block of setting upright is two 201,202 and becomes 180 ° to be symmetrical arranged with the center of circle, described laying particular stress on is with 3 to set upright between the locating convex block 201,202 at two, and this verandah of setting upright locating convex block and laying particular stress on band is the face of cylinder and lays particular stress on the face of cylinder external diameter that equals to set upright locating convex block 201,202 with 3 face of cylinder external diameter.
Described eccentric stub boring quickly 2 best riding position is on the drill collar between distance drill bit 4 about 9-12 rice.
F in the accompanying drawing
p---hole deviation power
F
High---centrifugal force
F
Clock---pendulum force
With reference to Fig. 2, drilling assembly of the present utility model is on short 2 drill collars 5 that are placed between drill bit 4 and the centralizer 1 quickly of off-centre, and for the drilling assembly of not establishing centralizer, described eccentric stub boring quickly 2 riding position is on the drill collar within 15 meters on the distance drill bit.
In the rotary drilling process, under action of centrifugal force, eccentric stub boring is 2 lay particular stress on and be with 3 always to be affixed to the borehole wall quickly.When laying particular stress on band when going to the borehole wall 6, since eccentric stub boring quickly external diameter less than bit diameter, negative value appears in drill axis corner β, it is drill axis 8 borehole wall direction skew under well, see Fig. 4 thereby will become drop angle power because of the hole deviation component that the pressure of the drill causes, this moment, drilling tool had tiltedly anti-preferably and well straightening effect; When laying particular stress on band when going under the well borehole wall 7, lay particular stress on band and drilling tool is risen set upright and supporting role, compare, significantly reduced the drill axis corner and seen Fig. 5 with shown in the pendulum assembly (see figure 3), thereby significantly reduced the hole deviation component that the pressure of the drill causes, strengthened the anti-oblique effect of drilling tool.Because drilling tool centrifugal force overlaps and point to the borehole wall under the well with pendulum force, strengthened drilling tool drop angle power greatly simultaneously, made drilling tool that better well straightening effect be arranged.This drilling assembly reduces the axis corner of drill bit, significantly reduces the hole deviation component that the pressure of the drill causes, and can satisfy depressing than wammel and anti-tiltedly creep into, and improves rate of penetration and wellbore quality.
Claims (3)
1, a kind of eccentric anti-deflection drilling tool combination, mainly by drill bit, drill collar, centralizer are formed, and it is characterized in that: the appropriate location of the drill collar between drill bit and centralizer is connected with eccentric stub boring quickly.
2, eccentric anti-deflection drilling tool combination as claimed in claim 1, it is characterized in that: described eccentric stub boring cross section quickly is for to be provided with the combined shaped of setting upright locating convex block and laying particular stress on band in an open circles cylinder epirelief, the described locating convex block of setting upright is two, become 180 ° to be symmetrical arranged with the center of circle, the described band of laying particular stress on is set upright between the locating convex block at two, and the face of cylinder external diameter that this verandah of setting upright locating convex block and laying particular stress on band is the face of cylinder and lays particular stress on band equals to set upright the face of cylinder external diameter of locating convex block.
3, eccentric anti-deflection drilling tool combination as claimed in claim 1 is characterized in that: for the drilling assembly of not establishing centralizer, described eccentric stub boring riding position quickly is on the drill collar within 15 meters on the distance drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96249363 CN2282057Y (en) | 1996-12-17 | 1996-12-17 | Eccentric anti-inclining drill combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96249363 CN2282057Y (en) | 1996-12-17 | 1996-12-17 | Eccentric anti-inclining drill combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2282057Y true CN2282057Y (en) | 1998-05-20 |
Family
ID=33920973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96249363 Expired - Fee Related CN2282057Y (en) | 1996-12-17 | 1996-12-17 | Eccentric anti-inclining drill combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2282057Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064106C (en) * | 1997-12-12 | 2001-04-04 | 石油勘探开发科学研究院钻井工艺研究所 | Lower drilling rig combination and its drilling method |
| CN101839113A (en) * | 2010-05-06 | 2010-09-22 | 中国石油集团钻井工程技术研究院 | Underground deviation-correcting energy extraction device |
| CN104047561A (en) * | 2014-06-20 | 2014-09-17 | 中国地质大学（武汉） | Rope coring and off-axis deviation-preventing way-type drilling unit |
| CN104389522A (en) * | 2014-11-20 | 2015-03-04 | 夏本玉 | Half-cycle self-correction anti-bending drilling tool |
| CN108071342A (en) * | 2018-01-31 | 2018-05-25 | 吉林大学 | Synergistic effect formula drilling tool is laid particular stress in the adjustable shunting of one kind |
| CN113513265A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Rigid-flexible deformation anti-deviation quick drilling tool combination |
| CN113944428A (en) * | 2020-07-15 | 2022-01-18 | 中国石油化工股份有限公司 | Quality-improving and speed-increasing drilling tool for oil and gas well |
| CN114876360A (en) * | 2022-04-14 | 2022-08-09 | 中国石油大学(华东) | Novel drilling tool combination based on vertical drilling system and drilling parameter optimization method |
-
1996
- 1996-12-17 CN CN 96249363 patent/CN2282057Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064106C (en) * | 1997-12-12 | 2001-04-04 | 石油勘探开发科学研究院钻井工艺研究所 | Lower drilling rig combination and its drilling method |
| CN101839113A (en) * | 2010-05-06 | 2010-09-22 | 中国石油集团钻井工程技术研究院 | Underground deviation-correcting energy extraction device |
| 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 |
| CN104047561A (en) * | 2014-06-20 | 2014-09-17 | 中国地质大学（武汉） | Rope coring and off-axis deviation-preventing way-type drilling unit |
| CN104047561B (en) * | 2014-06-20 | 2016-09-21 | 中国地质大学（武汉） | The anti-oblique way-type drilling unit of wire line coring off-axis |
| CN104389522A (en) * | 2014-11-20 | 2015-03-04 | 夏本玉 | Half-cycle self-correction anti-bending drilling tool |
| CN104389522B (en) * | 2014-11-20 | 2016-04-06 | 夏本玉 | The anti-bending drilling tool of half period self-correction |
| CN108071342A (en) * | 2018-01-31 | 2018-05-25 | 吉林大学 | Synergistic effect formula drilling tool is laid particular stress in the adjustable shunting of one kind |
| CN108071342B (en) * | 2018-01-31 | 2023-09-29 | 吉林大学 | Adjustable reposition of redundant personnel unbalance weight synergism formula drilling tool |
| CN113513265A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Rigid-flexible deformation anti-deviation quick drilling tool combination |
| CN113944428A (en) * | 2020-07-15 | 2022-01-18 | 中国石油化工股份有限公司 | Quality-improving and speed-increasing drilling tool for oil and gas well |
| CN114876360A (en) * | 2022-04-14 | 2022-08-09 | 中国石油大学(华东) | Novel drilling tool combination based on vertical drilling system and drilling parameter optimization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |