CN103643903A - Inside and outside centering guide for well repair in oil field - Google Patents
Inside and outside centering guide for well repair in oil field Download PDFInfo
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- CN103643903A CN103643903A CN201310651491.1A CN201310651491A CN103643903A CN 103643903 A CN103643903 A CN 103643903A CN 201310651491 A CN201310651491 A CN 201310651491A CN 103643903 A CN103643903 A CN 103643903A
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Abstract
The invention relates to an inside and outside centering guide for well repair in an oil field. The inside and outside centering guide for well repair in the oil field is mainly used for solving the problem that an existing centering guide can not be applied to casing milling construction of a directional well. The inside and outside centering guide for well repair in the oil field is characterized in that at least four spiral outside centering blocks (2) are arranged outside a middle boss of a tubular body (1), wear-resistant rigid alloy is welded onto the outside centering blocks (2) in a laid mode, at least four ball seats (3) are arranged in the outside centering blocks (2), ball carriers (4) are arranged below the ball seats (3) and rolling balls (5) are connected below the ball carriers (4). The inside and outside centering guide for well repair in the oil field can be applied to casing milling construction of the directional well and has the advantages of providing turning force, reducing friction and preventing jumping and complexity.
Description
Technical field
The present invention relates to the inside and outside centralizer of oil field instrument used, especially oil well.
Background technology
In oil well field, taking cover technology is thoroughly to repair the overhauling technology that serious cover damages oil-water well.On the existing milling pipe post that takes cover technology, be connected with centralizer.And existing centralizer is because reasons in structure can only be applied on straight well milling pipe post, can not be applied in directional well cover milling construction, active force in directional well cover milling construction between milling pipe post and the borehole wall and sleeve pipe causes construction not jump seriously, beat and spread sleeve pipe, other stall dish, even cover mills out new well, cover damage directional well cannot be applied and take the reparation of cover technology.
Summary of the invention
In order to solve existing centralizer, can not be applied in the problem in directional well cover milling construction.The invention provides the inside and outside centralizer of a kind of oil well.This oil well can be applied in directional well cover milling construction with inside and outside centralizer, and the break-in of providing power is provided, and reduces frictional force, Tiao not prevent the feature of anti-complexity.
Technical scheme of the present invention is: this oil well comprises body, outer wiper block, ball seat and ball holder with inside and outside centralizer.Tubular body middle part boss has 3 outer wiper blocks of above helical form outward, and outer wiper block upper berth is welded with wearable hard alloy, has 3 with upper ball base in outer wiper block, has ball holder under ball seat, under ball holder, is connected with ball.
The present invention has following beneficial effect: this oil well with inside and outside centralizer owing to adopting tubular body middle part boss to have 3 outer wiper blocks of above helical forms outward, outer wiper block upper berth is welded with wearable hard alloy, in outer wiper block, there are 3 with upper ball base, under ball seat, there is ball holder, under ball holder, be connected with the structure of ball.Utilize outer righting to realize the support of the borehole wall to milling pipe post, reduce the hunting range of milling pipe post, prevent from overlapping milling operating tool string and do not jump seriously; In utilizing, righting realizes sleeve pipe provides break-in power to milling pipe post, make milling pipe post overlap milling along casing track, the point contact that ball on centralizer provides and rolling friction are in the situation that offering the certain break-in power of milling pipe post, can greatly reduce the friction of casing section mill and sleeve pipe again, and make sleeve pipe and milling pipe post keep certain distance, solve cover milling construction and break up sleeve pipe, cut off freeing of the situations such as sleeve pipe.This oil well can be applied in directional well cover milling construction with inside and outside centralizer thus, and the break-in of providing power is provided, and reduces frictional force, Tiao not prevent the feature of anti-complexity.
accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present invention.
1-body in figure, the outer wiper block of 2-, 3-ball seat, the holder of 4-ball, 5-ball.
the specific embodiment:
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, this oil well comprises body 1, outer wiper block 2, ball seat 3, ball holder 4 and outer wiper block 5 with inside and outside centralizer.Tubular body 1 works the top and the bottom tubing string string effect that connects.There is top connection body 1 upper end, and top connection connects top tubing string string, and there is lower contact body 1 lower end, and lower contact connects bottom tubing string string.Body 1 middle part boss has 3 outer wiper blocks 2 of above helical form outward, and outer wiper block 2 implementation tools support the borehole wall, and outer wiper block 2 upper berths are welded with wearable hard alloy, and wearable hard alloy rises and prevents outer wiper block 2 wearing and tearing undergauges.In outer wiper block 2, have 3 with upper ball base 3, ball seat 3 coordinates ball 5 to realize rolling.Ball seat has ball holder 43 times, and ball holder 4 plays and holds out against ball 5 effect, and ball holder is connected with ball 54 times, and ball 5 is to the interior convex protrusion of body 1, and ball 5 coordinates with ball seat 3, realizes inner rolling righting, realizes the support of sleeve pipe to casing section mill.
This oil well provides break-in power with inside and outside centralizer, by interior wiper block, makes sleeve pipe offer power along well track of milling pipe post, makes milling pipe post overlap milling along well track.Reduce frictional force, on interior righting pedestal, ball is set, frictional force between sleeve pipe and casing section mill is changed into rolling friction, ball makes sleeve pipe and milling pipe post keep certain distance simultaneously, greatly reduce the contact area of casing section mill and sleeve pipe, realize and reduce rotation frictional resistance, prevent from breaing up or rub sleeve pipe because of frictional force.Tiao not prevent, outer wiper block can offer milling pipe post support force by the borehole wall, makes milling pipe post and sleeve pipe concentric, reduces the vibrations scope of milling pipe post, can effectively prevent that the not other jumping situations of overlapping milling construction from occurring.Anti-complexity, outer wiper block can be repaired the borehole wall, change fluidised form and prevent the effect of bit freezing of spiral runner.
Claims (1)
1. the inside and outside centralizer of oil well, comprise body (1), outer wiper block (2), ball seat (3) and ball holder (4), it is characterized in that: tubular body (1) middle part boss has 3 outer wiper blocks (2) of above helical form outward, outer wiper block (2) upper berth is welded with wearable hard alloy, in outer wiper block (2), there are 3 with upper ball base (3), under ball seat (3), there is ball holder (4), under ball holder (4), be connected with ball (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651491.1A CN103643903A (en) | 2013-12-03 | 2013-12-03 | Inside and outside centering guide for well repair in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651491.1A CN103643903A (en) | 2013-12-03 | 2013-12-03 | Inside and outside centering guide for well repair in oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103643903A true CN103643903A (en) | 2014-03-19 |
Family
ID=50249175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310651491.1A Pending CN103643903A (en) | 2013-12-03 | 2013-12-03 | Inside and outside centering guide for well repair in oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103643903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131789A (en) * | 2014-07-07 | 2014-11-05 | 中国石油天然气股份有限公司 | Shaft sleeve type inside-and-outside centralizer |
| CN108612488A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of automatic rotary centralizer of oil pipe |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2538945Y (en) * | 2002-03-01 | 2003-03-05 | 中国石油天然气股份有限公司 | Sucker rod centralising wear-proofing device |
| CN2551757Y (en) * | 2002-06-07 | 2003-05-21 | 中国石油天然气股份有限公司 | Ball-sucker rod wear-proof device |
| CN2570444Y (en) * | 2002-07-30 | 2003-09-03 | 茂名市同人实业有限公司 | Non-rotating centralizer |
| CN1814984A (en) * | 2006-02-21 | 2006-08-09 | 山东德美福石油科技有限公司 | Internal-rolling sucker rod centralizer |
| CN2806744Y (en) * | 2005-06-24 | 2006-08-16 | 宋根才 | Automatic deflection-preventing centering device with built-in ball bearing for sucker rod |
| CN201071688Y (en) * | 2007-10-26 | 2008-06-11 | 大庆油田有限责任公司 | Ball type centralizer |
| CN201321824Y (en) * | 2008-12-21 | 2009-10-07 | 赵景军 | Diamond centralizer capable of milling casing |
| CN202300267U (en) * | 2011-11-11 | 2012-07-04 | 中国石油天然气股份有限公司 | Ball anti-cutting milling head for taking directional well casing |
| CN202560122U (en) * | 2012-04-18 | 2012-11-28 | 山东创裕实业有限公司 | Novel casing centralizer |
| GB2501743A (en) * | 2012-05-03 | 2013-11-06 | M I Drilling Fluids Uk Ltd | Apparatus for attaching tools |
-
2013
- 2013-12-03 CN CN201310651491.1A patent/CN103643903A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2538945Y (en) * | 2002-03-01 | 2003-03-05 | 中国石油天然气股份有限公司 | Sucker rod centralising wear-proofing device |
| CN2551757Y (en) * | 2002-06-07 | 2003-05-21 | 中国石油天然气股份有限公司 | Ball-sucker rod wear-proof device |
| CN2570444Y (en) * | 2002-07-30 | 2003-09-03 | 茂名市同人实业有限公司 | Non-rotating centralizer |
| CN2806744Y (en) * | 2005-06-24 | 2006-08-16 | 宋根才 | Automatic deflection-preventing centering device with built-in ball bearing for sucker rod |
| CN1814984A (en) * | 2006-02-21 | 2006-08-09 | 山东德美福石油科技有限公司 | Internal-rolling sucker rod centralizer |
| CN201071688Y (en) * | 2007-10-26 | 2008-06-11 | 大庆油田有限责任公司 | Ball type centralizer |
| CN201321824Y (en) * | 2008-12-21 | 2009-10-07 | 赵景军 | Diamond centralizer capable of milling casing |
| CN202300267U (en) * | 2011-11-11 | 2012-07-04 | 中国石油天然气股份有限公司 | Ball anti-cutting milling head for taking directional well casing |
| CN202560122U (en) * | 2012-04-18 | 2012-11-28 | 山东创裕实业有限公司 | Novel casing centralizer |
| GB2501743A (en) * | 2012-05-03 | 2013-11-06 | M I Drilling Fluids Uk Ltd | Apparatus for attaching tools |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131789A (en) * | 2014-07-07 | 2014-11-05 | 中国石油天然气股份有限公司 | Shaft sleeve type inside-and-outside centralizer |
| CN108612488A (en) * | 2016-12-12 | 2018-10-02 | 四川煜天石油机械设备有限公司 | A kind of automatic rotary centralizer of oil pipe |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |
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| RJ01 | Rejection of invention patent application after publication |