CN106285512A - A kind of eccentric centralizer and using method thereof - Google Patents
A kind of eccentric centralizer and using method thereof Download PDFInfo
- Publication number
- CN106285512A CN106285512A CN201610883644.9A CN201610883644A CN106285512A CN 106285512 A CN106285512 A CN 106285512A CN 201610883644 A CN201610883644 A CN 201610883644A CN 106285512 A CN106285512 A CN 106285512A
- Authority
- CN
- China
- Prior art keywords
- eccentric
- top connection
- centralizer
- eccentric centralizer
- fish
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 241000251468 Actinopterygii Species 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of eccentric centralizer and using method thereof, this bias centralizer includes top connection and eccentric centralizer body, described top connection is together by a threaded connection with lower contact, eccentric centralizer body is installed in the middle part of the outer wall of top connection, support rotation key on the inner arc surface of eccentric centralizer body, is provided with retaining ledge by spring supporting on inner arc surface.Fish can be introduced fishing tool in the case of the top of fish of fish is excessive with cannula center skew by the present invention, increase the success rate that fish is salvaged, and when centralizer body meets card, mandrel can invert, make fishing tool can disengage fish, reduce salvaging risk and avoid causing second accident.
Description
Technical field
The present invention relates to a kind of eccentric centralizer and using method thereof, belong to brill, well workover fishing operation field.
Background technology
At present, in producing due to oil field development, various complex working conditions cause down-hole fish to be increased, and fish causes oil well production
Cannot be normally carried out.The top of fish of a portion fish due to excessive with cannula center skew, and existing eccentric centralizer be with
Mandrel is an entirety, and when centralizer body rotates and meets card, fishing tool can not carry out disengaging fish and cannot salvaging, cause oil well to produce
Amount reduces, and even cannot exploit, and easily causes safety and environmental protection accident.Fishing tool can be made to have accordingly, it would be desirable to develop one
The eccentric centralizer of certain deviation amount.
Summary of the invention
Object of the present invention is to provide a kind of simple in construction, the eccentric centralizer that cost is relatively low, unfreezing efficiency is high and
Its using method, to realize coordinating fishing tool to carry out eccentric fishing.
Technical scheme: a kind of eccentric centralizer, including top connection, eccentric centralizer body and lower contact, described
Top connection be together by a threaded connection with lower contact, eccentric centralizer body is installed in the middle part of the outer wall of top connection, is arranged on
Three support rotation keys in top connection outer wall keyway are supported on the inner arc surface of eccentric centralizer body by compression spring, including
Retaining ledge it is provided with on arc surface.
It is provided with lubricating gasket between described eccentric centralizer body and lower contact, plays lubrication and wear-resisting effect.
Described top connection is provided with anti-lost pin on the sidewall of lower contact.
Meanwhile, the present invention also provides for a kind of using method for above-mentioned eccentric centralizer, first by top connection and drilling rod
Connecting, lower contact is connected with fishing tool, then transfers fishing tool to TOF, rotary drill rod, the eccentric centralizer of drive
Rotating forward, now top connection is stuck in by supporting rotation key on the retaining ledge on the inner arc surface of eccentric centralizer body, makes
Joint is connected as a single entity with eccentric centralizer body and rotates simultaneously, thus makes fishing tool have certain deviation by eccentric centralizer body
Amount, introduces fishing tool by fish；When eccentric centralizer body rotates and meets card, invert rotating eccentricity centralizer, make eccentric centralizer body
Inner arc surface compression support rotation key, make eccentric centralizer reversely rotate, so that fishing tool energy reverse turn disengagement fish.
Owing to using technique scheme, it is an advantage of the current invention that: the present invention can be at the top of fish of fish and cannula center
Offset excessive in the case of caving introduced fishing tool, increase the success rate that fish is salvaged, and time centralizer body meets card,
Mandrel can invert, and makes fishing tool can disengage fish, reduces salvaging risk and avoids causing second accident.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is present invention sectional view when rotating forward；
Fig. 3 is present invention sectional view when reversely rotating.
Description of reference numerals: 1-top connection, 2-bias centralizer body, 3-supports rotation key, 4-compression spring, 5-lubricating pad
Sheet, the anti-lost pin of 6-, 7-O shape circle, 8-lower contact, 9-inner arc surface, 10-retaining ledge.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings with embodiment to this
Bright it is described in further detail.
Embodiments of the invention: the structural representation of the eccentric centralizer of the present invention is as it is shown in figure 1, include top connection 1, partially
Heart centralizer body 2 and lower contact 8, described top connection 1 is together by a threaded connection with lower contact 8, top connection 1 with under connect
On the sidewall of 8, anti-lost pin 6 is installed, prevents it from loosening；Meanwhile, in order to improve the sealing that top connection 1 is connected with lower contact 8
Property, the connection end in top connection 1 with lower contact 8 is provided with O 7.Eccentric centralizer body is installed in the middle part of the outer wall of top connection 1
2, between eccentric centralizer body 2 and lower contact 8, it is provided with lubricating gasket 5, plays lubrication and abrasionproof effect；It is arranged on top connection 1 to open
If keyway in three support rotation keys 3 be respectively supported on the inner arc surface 9 of eccentric centralizer body 2 by compression spring 4,
3 retaining ledges 10 it are provided with equably on inner arc surface 9.
The operation principle of the present invention: first top connection 1 is connected with drilling rod, lower contact 8 is connected with fishing tool, then under
Put fishing tool to TOF, rotary drill rod；Seeing Fig. 2, when rotating forward eccentric centralizer, top connection 1 is by 3 supports
Rotation key 3 is stuck on the retaining ledge 10 on the inner arc surface 9 of eccentric centralizer body 2, makes top connection 1 be linked as with eccentric centralizer body 2
One also rotates simultaneously, makes fishing tool have certain deviation amount by eccentric centralizer body 2, increases and salvage fish success rate；Ginseng
See Fig. 3, when eccentric centralizer body 2 rotates and meets card, during reversion rotating eccentricity centralizer, due to the inner arc surface 9 of eccentric centralizer body 2
Can compress support rotation key 3, now eccentric centralizer is reversible, makes fishing tool energy reverse turn disengagement fish.
Claims (4)
1. an eccentric centralizer, including top connection (1), lower contact (8) and eccentric centralizer body (2), it is characterised in that: described
Top connection (1) be together by a threaded connection with lower contact (8), eccentric righting is installed in the middle part of the outer wall of top connection (1)
Body (2), three be arranged in top connection (1) outer wall keyway support rotation key (3) are supported on bias by compression spring (4) and hold up
On the inner arc surface (9) of roman (2), inner arc surface (9) is provided with retaining ledge (10).
Eccentric centralizer the most according to claim 1, it is characterised in that: described eccentric centralizer body (2) and lower contact (8)
Between be provided with lubricating gasket (5), rise lubrication.
Eccentric centralizer the most according to claim 1, it is characterised in that: described top connection (1) and the side of lower contact (8)
Anti-lost pin (6) is installed on wall.
4. the using method for the eccentric centralizer described in claims 1 to 3 any one, it is characterised in that: first
Top connection (1) being connected with drilling rod, lower contact (8) is connected with fishing tool, then transfers fishing tool to TOF, rotation
Drilling rod, drives eccentric centralizer to rotate forward, and now top connection (1) is stuck in eccentric centralizer body (2) by supporting rotation key (3)
On retaining ledge (10) on inner arc surface (9), top connection (1) is made to be connected as a single entity with eccentric centralizer body (2) and rotate simultaneously, from
And make fishing tool have certain deviation amount by eccentric centralizer body (2), fishing tool is introduced fish top of fish；When eccentric righting
Body (2) rotates when meeting card, inverts rotating eccentricity centralizer, makes inner arc surface (9) compression of eccentric centralizer body (2) support rotation key
(3), eccentric centralizer is made to reversely rotate, so that fishing tool energy reverse turn disengagement fish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883644.9A CN106285512B (en) | 2016-10-10 | 2016-10-10 | A kind of bias centralizer and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883644.9A CN106285512B (en) | 2016-10-10 | 2016-10-10 | A kind of bias centralizer and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285512A true CN106285512A (en) | 2017-01-04 |
| CN106285512B CN106285512B (en) | 2018-10-30 |
Family
ID=57718211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610883644.9A Active CN106285512B (en) | 2016-10-10 | 2016-10-10 | A kind of bias centralizer and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106285512B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022256045A1 (en) * | 2021-06-03 | 2022-12-08 | Halliburton Energy Services, Inc. | Drill string with centralizer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058061A2 (en) * | 1981-02-07 | 1982-08-18 | DRILLING & SERVICE U.K. LIMITED | Tools for underground formations |
| CN2103633U (en) * | 1991-09-04 | 1992-05-06 | 焦玉贞 | Tool clamping device in petroleum well |
| CN201241633Y (en) * | 2008-07-31 | 2009-05-20 | 大港油田集团有限责任公司 | Rotary centralizer |
| CN201738832U (en) * | 2010-06-29 | 2011-02-09 | 大港油田集团有限责任公司 | Back-off safety joint |
| CN202493223U (en) * | 2012-02-27 | 2012-10-17 | 中国海洋石油总公司 | Separable eccentric centering device |
| CN203626608U (en) * | 2013-11-28 | 2014-06-04 | 中国石油集团长城钻探工程有限公司 | Reverse eccentric fixed wing rotary steering tool |
| CN206111107U (en) * | 2016-10-10 | 2017-04-19 | 贵州高峰石油机械股份有限公司 | Eccentric centralizer |
-
2016
- 2016-10-10 CN CN201610883644.9A patent/CN106285512B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058061A2 (en) * | 1981-02-07 | 1982-08-18 | DRILLING & SERVICE U.K. LIMITED | Tools for underground formations |
| CN2103633U (en) * | 1991-09-04 | 1992-05-06 | 焦玉贞 | Tool clamping device in petroleum well |
| CN201241633Y (en) * | 2008-07-31 | 2009-05-20 | 大港油田集团有限责任公司 | Rotary centralizer |
| CN201738832U (en) * | 2010-06-29 | 2011-02-09 | 大港油田集团有限责任公司 | Back-off safety joint |
| CN202493223U (en) * | 2012-02-27 | 2012-10-17 | 中国海洋石油总公司 | Separable eccentric centering device |
| CN203626608U (en) * | 2013-11-28 | 2014-06-04 | 中国石油集团长城钻探工程有限公司 | Reverse eccentric fixed wing rotary steering tool |
| CN206111107U (en) * | 2016-10-10 | 2017-04-19 | 贵州高峰石油机械股份有限公司 | Eccentric centralizer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022256045A1 (en) * | 2021-06-03 | 2022-12-08 | Halliburton Energy Services, Inc. | Drill string with centralizer |
| US20220389774A1 (en) * | 2021-06-03 | 2022-12-08 | Halliburton Energy Services, Inc. | Drill String with Centralizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285512B (en) | 2018-10-30 |
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