CN207485370U - A kind of top casing back-off clip - Google Patents
A kind of top casing back-off clip Download PDFInfo
- Publication number
- CN207485370U CN207485370U CN201721610324.2U CN201721610324U CN207485370U CN 207485370 U CN207485370 U CN 207485370U CN 201721610324 U CN201721610324 U CN 201721610324U CN 207485370 U CN207485370 U CN 207485370U
- Authority
- CN
- China
- Prior art keywords
- clip
- tooth
- casing
- card slot
- pin
- 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
Links
- 210000000080 chela (arthropods) Anatomy 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of top casing back-off clips, including clip, clamp tooth, pin, fastening bolt, clip is two panels double-vane semi-annular structure, its inside is divided into not isometrical two parts up and down, upper inner is bonded with sleeve outer wall, lower inside is bonded with casing coupling outer wall, upper, it is axially each on the inside of lower part that there are two card slots, card slot entrance is towards both ends, tooth is clamped for being inserted into, there is pin hole in card slot, for using pin grips pincers tooth, both wings respectively have in two bolts hole being distributed up and down, it is inserted into fastening bolt the clip of two panels semi-annular structure is integrated；With 4 pieces of backup tong tooth on every clip, it is inserted into the card slot on clip.It clamps tooth and clamps tooth for hydraulic tongs.The utility model passes through the mounting clamp tooth in side bayonet slot in clip, and bite casing and casing coupling under the machine clamp force effect of fastening bolt, realize screw thread between fixed sleeving and casing coupling, realization ensures to release position in below ground when taking top casing, it improves work efficiency, reduces construction risk.
Description
Technical field
The utility model is related to oil/gas well well workover construction field, during in particular to one kind for the back-off of top casing
The clip used.
Background technology
When carrying out well workover and taking set operation and carry out top casing back-off, for avoid releasing position casing increase pipe nipple and
Screw thread releases between casing coupling or first, top casing and upper sleeve box cupling, the mode of generally use electric welding machine " beating palm "
Fixing buckle line, but well head fire operation danger is larger, and wastes a lot of manpower and material resources.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of top casing back-off clip, tight by bolt
Gu clip makes the clip tooth that makes up tong bite casing and casing coupling outer wall, to achieve the purpose that screw thread between fixed sleeving and box cupling.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of top casing back-off card
Hoop, including clip, pincers tooth, pin, fastening bolt, clip is two panels double-vane semi-annular structure, and inside is divided into differs up and down
Diameter two parts, upper inner are bonded with sleeve outer wall, and lower inside is bonded with casing coupling outer wall, the edge on the inside of upper and lower part
It axially respectively there are two card slot, card slot entrance clamps tooth for being inserted into, have pin hole in card slot, for using pin towards both ends
Grips pincers tooth, both wings respectively have in two bolts hole being distributed up and down, are inserted into fastening bolt by the clip of two panels semi-annular structure
It is integrated；With 4 pieces of backup tong tooth on every clip, it is inserted into the card slot on clip.
The pincers tooth clamps tooth for hydraulic tongs.
The beneficial effects of the utility model are：By the mounting clamp tooth in side bayonet slot in clip, and in the machine of fastening bolt
Casing and casing coupling are bitten under clamp force effect, screw thread between fixed sleeving and casing coupling is realized, when realization takes top casing
Guarantee releases position in below ground, both improves work efficiency, and avoids well head fire operation, reduces construction risk.
Description of the drawings
Fig. 1 is the structure diagram of casing back-off clip at the top of the utility model；
Fig. 2 is casing back-off clip side structure schematic diagram at the top of the utility model；
Fig. 3 is the application schematic diagram of casing back-off clip at the top of the utility model.
In figure, 1- clips；2- fastening bolts；3- card slots；21- bolts hole；22- pin holes；31- casings increase pipe nipple；32-
Top casing coupling；First casing at the top of 33-；Casing back-off clip at the top of 34-.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figs. 1-2, the top casing back-off clip of the utility model, including clip 1, pincers tooth, pin, fastening spiral shell
Bolt, clip 1 are two panels double-vane semi-annular structure, and inside is divided into not isometrical two parts up and down, upper inner 4 and sleeve outer wall
Fitting, lower inside 5 are bonded with casing coupling outer wall, and axially each there are two card slot 6 on the inside of upper and lower part, card slot 6 enters
Mouth clamps tooth 23 for being inserted into, has pin hole 22 in card slot 6, for using pin grips pincers tooth 23, both wings, which respectively have, is in towards both ends
Two bolts hole 21 being distributed up and down are inserted into fastening bolt and the clip 1 of two panels semi-annular structure are integrated；Every clip
With 4 pieces of backup tong tooth on 1, it is inserted into the card slot 6 on clip.
The pincers tooth clamps tooth for hydraulic tongs.Pincers tooth is existing structure, is no longer described herein.
The utility model screw thread, realization can ensure to release position on ground when taking top casing between fixed sleeving and box cupling
Below face.
Specifically, 4 pieces of pincers teeth are inserted into from 1 upper and lower ends of clip in the card slot 6 of 1 inside of clip, and pass through pin respectively
Nail will pass through pincers tooth to be mounted in pin hole 22, and pincers tooth is fixed.By two panels clip 1 from both sides be separately mounted to casing coupling and
Sleeve body connecting portion, clip inside are bonded closely with casing coupling and sleeve body.By clip both wings bolt hole 21 two-by-two
Alignment is inserted into fastening bolt 2, and fastening bolt 2 is tightened, and under the effect of its machine clamp force, pincers tooth is made to bite casing coupling and set
Tube body realizes the fixation to thread.
As shown in figure 3, generally when top casing is buckled to, two sets of 34 cooperations of top casing back-off clip is often needed to make
With, while between fixed sleeving raising pipe nipple 31 and top casing coupling 32 and first, top casing 33 and top casing coupling 32
Screw thread at two ensures that position of releasing both was improved work efficiency in below ground so as to fulfill taking during the casing of top.
In conclusion the content of the utility model is not limited in the above embodiments, in same area it is insighted it
Scholar can easily propose other embodiments within the technological guidance's thought of the utility model, but this embodiment is all wrapped
It includes within the scope of the utility model.
Claims (2)
1. a kind of top casing back-off clip, which is characterized in that including clip (1), pincers tooth, pin, fastening bolt (2), card
It is two panels double-vane semi-annular structure to bind round (1), and inside is divided into not isometrical two parts up and down, upper inner (4) and sleeve outer wall
Fitting, lower inside (5) are bonded with casing coupling outer wall, and axially each on the inside of upper and lower part there are two card slot (6), cards
Slot (6) entrance, for being inserted into pincers tooth (23), has pin hole (22), for using pin grips pincers tooth towards both ends in card slot (6)
(23), both wings respectively have in two bolts hole (21) being distributed up and down, are inserted into fastening bolt (2) by the card of two panels semi-annular structure
Hoop (1) is integrated；With 4 pieces of backup tong tooth on every clip (1), it is inserted into the card slot (6) on clip.
2. top casing back-off clip according to claim 1, which is characterized in that the pincers tooth clamps tooth for hydraulic tongs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610324.2U CN207485370U (en) | 2017-11-27 | 2017-11-27 | A kind of top casing back-off clip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610324.2U CN207485370U (en) | 2017-11-27 | 2017-11-27 | A kind of top casing back-off clip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485370U true CN207485370U (en) | 2018-06-12 |
Family
ID=62472685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721610324.2U Expired - Fee Related CN207485370U (en) | 2017-11-27 | 2017-11-27 | A kind of top casing back-off clip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485370U (en) |
-
2017
- 2017-11-27 CN CN201721610324.2U patent/CN207485370U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211110 Address after: 100007 No. 9, Dongzhimen North Street, Dongcheng District, Beijing Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 PetroChina Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 |