CN108150120A - A kind of feeding casing back-off joint combination unit and operating method - Google Patents
A kind of feeding casing back-off joint combination unit and operating method Download PDFInfo
- Publication number
- CN108150120A CN108150120A CN201810193108.5A CN201810193108A CN108150120A CN 108150120 A CN108150120 A CN 108150120A CN 201810193108 A CN201810193108 A CN 201810193108A CN 108150120 A CN108150120 A CN 108150120A
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- China
- Prior art keywords
- casing
- female connector
- sent
- dextrorotation
- screw thread
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- 238000011017 operating method Methods 0.000 title abstract description 6
- 210000002445 nipple Anatomy 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013535 sea water Substances 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 feeding casing back-off joint combination unit and operating methods, wherein it is sent into casing back-off joint combination unit, including dextrorotation female connector, top sub ontology, left-handed female connector and lower part nipple body, the dextrorotation female connector is connect respectively with feeding casing, top sub ontology, the left-handed female connector is connected respectively with top sub ontology, lower part nipple body, and described lower part nipple body one end connects with well inner sleeve series winding.The operating method of the present invention can allow feeding casing to realize quick back-off disengagement target with well inner sleeve string, it cuts off to be sent into casing and take out feeding casing without using electric welding and move again at derrick to next well location, seamless connection operation is fully achieved, operating efficiency is improved, reduces cost.
Description
Technical field
The invention belongs to the drilling engineering technical fields of the resources such as petroleum gas, and in particular to a kind of quick realize is sent into
The feeding casing back-off joint combination unit and operating method that casing is disengaged with the back-off of well inner sleeve string.
Background technology
After self-elevating drilling platform well cementing operation, general utilization is sent into casing and continues to send to seat by well inner sleeve string
Bottom recycles casing slip that bunch tube remainder weight is suspended on casing head, then will be fed into after casing takes out and move derrick
Lower step operation is carried out to next target well location.In operation process, will be fed into the back-off of casing and well inner sleeve string disengage operation compared with
For difficulty.Generally there are following treatment measures at scene at present：1) when connection is sent into casing with well inner sleeve string, tightening torque ratio is just
Low 5000lb.ft or so is often required, the left-handed back-off of casing tong is recycled to realize and is disengaged, such method drawback one is easily to bring
" fish " accident occurs, second is that target location back-off disengages, probability is extremely low, and easily back-off is de- between feeding casing and feeding casing
It opens, leaves part and be sent into casing in well, still can not carry out lower step operation；2) after bunch tube being sat slips on casing head,
The feeding casing suitable position exposed between raising pipe and casing head using electric welding is cut off, and such method needs be sent into casing
Upper point welds several loopholes, is cut off again after the seawater being sent into casing drains off only, and recycling moves derrick again after being sent into casing,
Not only timeliness is low for this method, and loss section is needed to be distributed into casing, and operating cost is high.
Due to marine rig Fei Gao, it is desirable that be seamlessly connected work flow, high operation timeliness so as to effectively reduce operation into
This, when being sent into casing back-off and disengaging operation, timeliness is low at present, can not meet cost efficiency demand, therefore, necessary hair
A kind of bright feeding casing back-off joint combination unit, realizes that quickly back-off disengages target between feeding casing and well inner sleeve string,
It realizes the seamless connection of work flow and no operatton risk, improves operation timeliness, reduce operating cost.
Invention content
In view of the deficiency of the prior art, the present invention provides a kind of feeding casing back-off joint combination unit and
Operating method is realized and is sent between casing and well inner sleeve string quickly back-off disengagement target.
In order to solve the above technical problems, the present invention takes following technical scheme：
A kind of feeding casing back-off joint combination unit, including dextrorotation female connector, top sub ontology, left-handed female connector and
Lower part nipple body, the dextrorotation female connector are connect respectively with feeding casing, top sub ontology, the left-handed female connector
It is connected respectively with top sub ontology, lower part nipple body, described lower part nipple body one end connects with well inner sleeve series winding；
The top sub body dimension is consistent with being sent into sleeve body size, and wherein one end is equipped with dextrorotation screw thread,
The other end is equipped with left-handed screw thread, and the dextrorotation female connector size is consistent with being sent into casing female connector, interior to be equipped with dextrorotation screw thread,
Dextrorotation female connector is connected by dextrorotation screw thread of the dextrorotation screw thread respectively with the dextrorotation screw thread of top sub ontology, feeding casing,
The lower part nipple body size is consistent with being sent into sleeve body size, and wherein one end is equipped with left-handed screw thread, and the other end is set
There is dextrorotation screw thread, the left-handed female connector size is consistent with being sent into casing female connector, interior to be equipped with left-handed screw thread, and left-handed mother connects
Head is connected by left-handed screw thread of the left-handed screw thread respectively with the left-handed screw thread of top sub ontology, lower part nipple body, described
The lower part nipple body other end by dextrorotation screw thread and well inner sleeve series winding connect；
Left-handed female connector and the left-handed screw thread end full weld of lower part nipple body are fixed with electric welding.
Above-mentioned feeding casing back-off joint combination unit is utilized in a kind of feeding casing back-off joint combination operation method,
Include the following steps：
1) prepare：1. smear dope in each connecting filament buckle；2. top sub ontology is connect with dextrorotation female connector；③
Left-handed female connector is connect with lower part nipple body；4. top sub ontology is connect with left-handed female connector, and will be left with electric welding
Spinner connector is fixed with lower part nipple body upper end full weld；Casing back-off position is sent into 5. calculating in advance；
2) it installs：1. bunch tube is suspended on wellhead slip；Casing back-off joint combination dress is will be fed into 2. being driven using top
It puts and is hung to above bunch tube；3. after make-up, it will be fed into casing back-off joint combination unit using casing tong and connected with bunch tube
It connects；Feeding casing back-off joint combination unit top is hung to 4. being driven using top and will be fed into casing；It 5., will using casing tong after make-up
It is sent into casing and is attached with being sent into casing back-off joint combination unit；6. continuing connection is sent into casing, bunch tube is sent to finger
Well cementing operation is carried out after depthkeeping degree；
3) bottom is sat：1. after well cementation, continue connection feeding casing and bunch tube is sat into bottom；It is above carried 2. being driven using top
120klbs (drives weight) including top, casing slip of sitting straight in casing head；3. after sitting casing slip, weight is driven on top and is all released
It discharges and is placed in the point of neutralization；
4) it is buckled to：After 1. top drive is placed in the point of neutralization, casing tong, which clasps, is sent into casing continuation dextrorotation；2. observe casing tong torque
And sleeve rotating state is sent into, top, which is driven, slowly above carries part feeding casing wt, slowly takes out and is sent into casing；3. casing to be sent into
One fixing turn of dextrorotation is confirmed after being buckled to and disengaging successfully, is risen and is got rid of feeding casing, moves derrick to next target well location.
The present invention has the following advantages：
Disengagement target can be quickly buckled to by being sent into casing and well inner sleeve string, cut off without using electric welding and be sent into casing and take
Go out to be sent into casing to move again at derrick to next well location, fully achieve seamless connection operation, improve operating efficiency, reduce operation
Cost.Meanwhile the configuration of the present invention is simple, easy to process, cost of investment is low, reusable；Application prospect is good, can be extensive
Applied to marine drilling platform；Execute-in-place is simple, efficient, no operatton risk
Description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
In figure：1- dextrorotation female connectors；2- top sub ontologies；21- dextrorotation screw threads；The left-handed screw threads of 22-；The left-handed mothers of 3- connect
Head；4- lower parts nipple body；The left-handed screw threads of 41-；42- dextrorotation screw threads.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of feeding casing back-off joint combination unit, including dextrorotation female connector 1, top sub ontology
2nd, left-handed female connector 3 and lower part nipple body 4, the dextrorotation female connector 1 connect respectively with feeding casing, top sub ontology 2
It connects, the left-handed female connector 3 is connected respectively with top sub ontology 2, lower part nipple body 4, the lower part pipe nipple sheet
4 one end of body connects with well inner sleeve series winding；
2 size of top sub ontology is consistent with being sent into sleeve body size, and wherein one end is equipped with dextrorotation screw thread
21, the other end is equipped with left-handed screw thread 22, and 1 size of dextrorotation female connector is consistent with being sent into casing female connector, interior to be equipped with the right side
Screw thread is revolved, dextrorotation female connector 1 passes through the dextrorotation with the dextrorotation screw thread 21 of top sub ontology 2, feeding casing respectively of dextrorotation screw thread
Screw thread is connected, and 4 size of lower part nipple body is consistent with being sent into sleeve body size, and wherein one end is equipped with left-handed silk
Button 41, the other end are equipped with dextrorotation screw thread 42, and 3 size of left-handed female connector is consistent with being sent into casing female connector, is inside equipped with
Left-handed screw thread, left-handed female connector 3 by left-handed screw thread respectively with the left-handed screw thread 22 of top sub ontology 2, lower part nipple body
4 left-handed screw thread 41 is connected, and 4 other end of lower part nipple body is connect by dextrorotation screw thread 42 and well inner sleeve series winding；
The dextrorotation female connector 1 is connected respectively with feeding casing, nipple body 2, has the function of to form a connecting link；Institute
The left-handed female connector 3 stated is connected respectively with top sub ontology 2, lower part nipple body 4, has had variable buckle effect, and electricity consumption
Left-handed female connector 3 and the 41 end full weld of left-handed screw thread of lower part nipple body 4 are fixed in weldering, drive top short when being sent into casing dextrorotation
Abridged edition body 2 realizes back-off disengagement effect with left-handed female connector 3；The lower part nipple body 4 passes through in dextrorotation screw thread 42 and well
Bunch tube dextrorotation female connector is connected, and has the function of that left-handed female connector 3 is allowed to play variable buckle disengagement with top sub ontology 2.
A kind of feeding casing back-off joint combination operation method, includes the following steps：
1) prepare：1. smear dope in each connecting filament buckle；2. top sub ontology is connect with dextrorotation female connector；③
Left-handed female connector is connect with lower part nipple body；4. top sub ontology is connect with left-handed female connector, and will be left with electric welding
Spinner connector is fixed with lower part nipple body upper end full weld；Casing back-off position is sent into 5. calculating in advance；
2) it installs：1. bunch tube is suspended on wellhead slip；Casing back-off joint combination dress is will be fed into 2. being driven using top
It puts and is hung to above bunch tube；3. after make-up, it will be fed into casing back-off joint combination unit using casing tong and connected with bunch tube
It connects；Feeding casing back-off joint combination unit top is hung to 4. being driven using top and will be fed into casing；It 5., will using casing tong after make-up
It is sent into casing and is attached with being sent into casing back-off joint combination unit；6. continuing connection is sent into casing, bunch tube is sent to finger
Well cementing operation is carried out after depthkeeping degree；
3) bottom is sat：1. after well cementation, continue connection feeding casing and bunch tube is sat into bottom；It is above carried 2. being driven using top
120klbs (drives weight) including top, casing slip of sitting straight in casing head；3. after sitting casing slip, weight is driven on top and is all released
It discharges and is placed in the point of neutralization；
4) it is buckled to：After 1. top drive is placed in the point of neutralization, casing tong, which clasps, is sent into casing continuation dextrorotation；2. observe casing tong torque
And sleeve rotating state is sent into, top, which is driven, slowly above carries part feeding casing wt, slowly takes out and is sent into casing；3. casing to be sent into
One fixing turn of dextrorotation is confirmed after being buckled to and disengaging successfully, is risen and is got rid of feeding casing, moves derrick to next target well location.
It is described above by example, but the present invention is not limited to particular forms disclosed above, it should be understood that, this field
All deformations or replacement of the technical staff to technical solution of the present invention, all without departing from the spirit and model of technical solution of the present invention
It encloses.
Claims (2)
1. a kind of feeding casing back-off joint combination unit, it is characterised in that：Including dextrorotation female connector (1), top sub ontology
(2), left-handed female connector (3) and lower part nipple body (4), the dextrorotation female connector (1) is respectively with being sent into casing, top sub
Ontology (2) connects, and the left-handed female connector (3) is connected respectively with top sub ontology (2), lower part nipple body (4), institute
Lower part nipple body (4) one end stated connects with well inner sleeve series winding；
Top sub ontology (2) size is consistent with being sent into sleeve body size, and wherein one end is equipped with dextrorotation screw thread
(21), the other end is equipped with left-handed screw thread (22), and dextrorotation female connector (1) size is consistent with being sent into casing female connector, interior
Equipped with dextrorotation screw thread, dextrorotation female connector (1) by dextrorotation screw thread respectively with the dextrorotation screw thread of top sub ontology (2) (21), give
The dextrorotation screw thread for entering casing is connected, and lower part nipple body (4) size is consistent with being sent into sleeve body size, wherein
One end is equipped with left-handed screw thread (41), and the other end is equipped with dextrorotation screw thread (42), and left-handed female connector (3) size is with being sent into casing
Female connector is consistent, it is interior be equipped with left-handed screw thread, left-handed female connector (3) by left-handed screw thread respectively with top sub ontology (2)
Left-handed screw thread (22), lower part nipple body (4) left-handed screw thread (41) be connected, described lower part nipple body (4) other end
It is connect by dextrorotation screw thread (42) and well inner sleeve series winding；
Left-handed female connector (3) and left-handed screw thread (41) the end full weld of lower part nipple body (4) are fixed with electric welding.
2. a kind of feeding casing back-off joint combination operation method, utilizes feeding casing back-off joint group described in claim 1
It attaches together and puts, which is characterized in that include the following steps：
1) prepare：1. smear dope in each connecting filament buckle；2. top sub ontology is connect with dextrorotation female connector；3. by left
Spinner connector is connect with lower part nipple body；4. top sub ontology is connect with left-handed female connector, and with electric welding by left-handed mother
Connector is fixed with lower part nipple body upper end full weld；Casing back-off position is sent into 5. calculating in advance；
2) it installs：1. bunch tube is suspended on wellhead slip；It is hung 2. being driven using top and will be fed into casing back-off joint combination unit
Above to bunch tube；3. after make-up, it will be fed into casing back-off joint combination unit using casing tong and be attached with bunch tube；④
Casing, which is will be fed into, using top drive is hung to feeding casing back-off joint combination unit top；5. it after make-up, will be fed into using casing tong
Casing is attached with being sent into casing back-off joint combination unit；6. continuing connection is sent into casing, bunch tube is sent to specified depth
Well cementing operation is carried out after degree；
3) bottom is sat：1. after well cementation, continue connection feeding casing and bunch tube is sat into bottom；120klbs (packets are above carried 2. being driven using top
Include top and drive weight), casing slip of sitting straight in casing head；3. after sitting casing slip, top drive weight is all released in being placed in
And point；
4) it is buckled to：After 1. top drive is placed in the point of neutralization, casing tong, which clasps, is sent into casing continuation dextrorotation；2. it observes casing tong torque and send
Enter sleeve rotating state, top, which is driven, slowly above carries part feeding casing wt, slowly takes out and is sent into casing；3. casing dextrorotation to be sent into
One fixing turn is confirmed after being buckled to and disengaging successfully, is risen and is got rid of feeding casing, moves derrick to next target well location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193108.5A CN108150120A (en) | 2018-03-09 | 2018-03-09 | A kind of feeding casing back-off joint combination unit and operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193108.5A CN108150120A (en) | 2018-03-09 | 2018-03-09 | A kind of feeding casing back-off joint combination unit and operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150120A true CN108150120A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810193108.5A Pending CN108150120A (en) | 2018-03-09 | 2018-03-09 | A kind of feeding casing back-off joint combination unit and operating method |
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| CN (1) | CN108150120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725658A (en) * | 2019-10-14 | 2020-01-24 | 中国石油化工股份有限公司 | Radial anchoring inverted-buckling casing taking and replacing device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378531Y (en) * | 1998-11-20 | 2000-05-17 | 胜利石油管理局孤东采油厂 | High temperature and high pressure safety joint |
| CN2668824Y (en) * | 2004-01-05 | 2005-01-05 | 辽河石油勘探局 | Device for reducing friction resistant force of sound well pipe-column |
| CN202596597U (en) * | 2012-05-24 | 2012-12-12 | 中国石油集团西部钻探工程有限公司 | Thread-converting short joint |
| CN202659166U (en) * | 2011-12-15 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Portable right-angled buckling-changing joint for well drilling |
| CN206091893U (en) * | 2016-09-19 | 2017-04-12 | 中国石油集团渤海钻探工程有限公司 | On preventing, general type scurries nipple joint |
| CN207974786U (en) * | 2018-03-09 | 2018-10-16 | 中海石油(中国)有限公司湛江分公司 | A kind of feeding casing back-off joint combination unit |
-
2018
- 2018-03-09 CN CN201810193108.5A patent/CN108150120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378531Y (en) * | 1998-11-20 | 2000-05-17 | 胜利石油管理局孤东采油厂 | High temperature and high pressure safety joint |
| CN2668824Y (en) * | 2004-01-05 | 2005-01-05 | 辽河石油勘探局 | Device for reducing friction resistant force of sound well pipe-column |
| CN202659166U (en) * | 2011-12-15 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Portable right-angled buckling-changing joint for well drilling |
| CN202596597U (en) * | 2012-05-24 | 2012-12-12 | 中国石油集团西部钻探工程有限公司 | Thread-converting short joint |
| CN206091893U (en) * | 2016-09-19 | 2017-04-12 | 中国石油集团渤海钻探工程有限公司 | On preventing, general type scurries nipple joint |
| CN207974786U (en) * | 2018-03-09 | 2018-10-16 | 中海石油(中国)有限公司湛江分公司 | A kind of feeding casing back-off joint combination unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725658A (en) * | 2019-10-14 | 2020-01-24 | 中国石油化工股份有限公司 | Radial anchoring inverted-buckling casing taking and replacing device and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |
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| RJ01 | Rejection of invention patent application after publication |