CN202325291U - Anti-tripping device of working casing pipe - Google Patents

Anti-tripping device of working casing pipe Download PDF

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Publication number
CN202325291U
CN202325291U CN2011204782207U CN201120478220U CN202325291U CN 202325291 U CN202325291 U CN 202325291U CN 2011204782207 U CN2011204782207 U CN 2011204782207U CN 201120478220 U CN201120478220 U CN 201120478220U CN 202325291 U CN202325291 U CN 202325291U
Authority
CN
China
Prior art keywords
spline
casing pipe
spline housing
housing
working column
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
Application number
CN2011204782207U
Other languages
Chinese (zh)
Inventor
郭秀庭
何宇枫
赵宏图
李立昌
刘颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sea Tianjin Logical Oilfield Engineering Technological Service Co Ltd
Original Assignee
Sea Tianjin Logical Oilfield Engineering Technological Service Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sea Tianjin Logical Oilfield Engineering Technological Service Co Ltd filed Critical Sea Tianjin Logical Oilfield Engineering Technological Service Co Ltd
Priority to CN2011204782207U priority Critical patent/CN202325291U/en
Application granted granted Critical
Publication of CN202325291U publication Critical patent/CN202325291U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an anti-tripping device of a working casing pipe, which is characterized by comprising a connecting hoop, a male plug, a spline housing and a lower connector. The connecting hoop is in threaded connection with an outer circle of the spline housing, a spline groove is arranged on an inner circle of the spline housing, the spline groove is slidably matched with a spline inlayed at the lower end of the male plug, and the spline housing is in threaded connection with the lower connector. The anti-tripping device of the working casing pipe has the advantages of utilizing a matching structure of the spline housing and the spline to solve the technical problem of casing pipe tripping, and being capable of preventing an inner-layer casing pipe from falling in a well because of the casing pipe tripping caused by reactive torque force generated by friction between a drill stem and the inner-layer casing pipe during a well drilling process.

Description

The working column trip-proof device
Technical field
The utility model belongs to drilling equipment, relates in particular to a kind of working column trip-proof device.
Background technology
Adopt in two circulating drilling processes in coal bed gas; Need bilayer sleeve down in the colliery, wherein outer layer sleeve is to fix through managing outer cementing molding method, and inner layer sleeve (title working column) is lowered in the outer layer sleeve; Consider from the recovery of working column later stage with as the technology of circulation canal; Working column can not fix with the outer cementing molding method of pipe, and in drilling process, the drilling tool of rotation contacts with working column at a high speed; Produce frictional force thus and can make the working column back-off well that falls, cause engineering accident.
The utility model content
The utility model is in order to overcome deficiency of the prior art, a kind of working column trip-proof device to be provided, utilizing being slidingly connected of spline housing and spline fitted structure to realize the anti-rotation purpose of sleeve pipe; Can prevent in the drilling process to cause sleeve pipe to be threaded off, cause the inner layer sleeve well that falls because of the reaction torque power that drilling rod friction inner layer sleeve produces.
The utility model is for realizing above-mentioned purpose; Realize that through following technical scheme a kind of working column trip-proof device is characterized in that: comprise connecting hoop, public plug, spline housing and lower contact; Said connection hoop and spline housing cylindrical are spirally connected; Circle is provided with spline in the said spline housing, and said spline is slidingly matched with the spline that is embedded in the public plug lower end, and said spline housing is bolted with lower contact.
The spline quantity of said spline housing and spline quantity Matching, its quantity are three-five.
Said spline lower end is provided with the guiding wedge angle.
Beneficial effect: utilize spline housing and spline fitted structure to solve the technical barrier that sleeve pipe is threaded off.Can prevent in the drilling process to cause sleeve pipe to be threaded off, cause the inner layer sleeve well that falls because of the reaction torque power that drilling rod friction inner layer sleeve produces.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A view of Fig. 1.
The specific embodiment
Below in conjunction with preferred embodiment; Details are as follows to the specific embodiment that provides according to the utility model: see accompanying drawing for details, a kind of working column trip-proof device comprises connecting hoop 1, public plug 2, spline housing 3 and lower contact 4; Said connection hoop and spline housing cylindrical are spirally connected; Circle is provided with spline 7 in the said spline housing, and said spline is slidingly matched with the spline 5 that is embedded in the public plug lower end, and said spline housing is bolted with lower contact.The spline quantity of said spline housing and spline quantity Matching, its quantity are three-five.Said spline lower end is provided with guiding wedge angle 6.
The effect of each parts: sleeve pipe connects internal thread and is connected with upper sleeve; Insert in the spline of spline housing during spline work, stop working column rotation dropout; The usefulness that the sleeve pipe external screw thread is connected with following parts casing pipe.
The course of work:
1, the spline housing in this device with the outer layer sleeve G.I.H, is managed outer well cementing of cement with after the outer layer sleeve bottom thread is connected;
2, the working column bottom thread G.I.H behind the public plug that spins, the spline of public plug lower end inserts with the spline of spline housing and docks;
3, implement to creep into drilling rod tail band drill bit;
4, after the finishing drilling, public plug is extracted in spline housing, trips out working column, recycling.
Like the probing of certain mouthful of colliery, dark 701m down in this device well, female spline is connected 103/4 " sleeve bottom manage outer well cementing of cement, and public spline is connected 7 " working column bottom, it is once successful to be lowered to the butt joint spline, after with rod boring coal seam 45 days, sleeve pipe does not have the dropout phenomenon,
The above only is the preferred embodiment of the utility model, is not the structure of the utility model is done any pro forma restriction.Every technical spirit according to the utility model is to any simple modification, equivalent variations and modification that above embodiment did, all still belongs in the scope of technical scheme of the utility model.

Claims (3)

1. working column trip-proof device; It is characterized in that: comprise connecting hoop, public plug, spline housing and lower contact; Said connection hoop and spline housing cylindrical are spirally connected; Circle is provided with spline in the said spline housing, and said spline is slidingly matched with the spline that is embedded in the public plug lower end, and said spline housing is bolted with lower contact.
2. working column trip-proof device according to claim 1 is characterized in that: the spline quantity of said spline housing and spline quantity Matching, its quantity are three-five.
3. working column trip-proof device according to claim 1 is characterized in that: said spline lower end is provided with the guiding wedge angle.
CN2011204782207U 2011-11-25 2011-11-25 Anti-tripping device of working casing pipe Expired - Fee Related CN202325291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204782207U CN202325291U (en) 2011-11-25 2011-11-25 Anti-tripping device of working casing pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204782207U CN202325291U (en) 2011-11-25 2011-11-25 Anti-tripping device of working casing pipe

Publications (1)

Publication Number Publication Date
CN202325291U true CN202325291U (en) 2012-07-11

Family

ID=46437273

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204782207U Expired - Fee Related CN202325291U (en) 2011-11-25 2011-11-25 Anti-tripping device of working casing pipe

Country Status (1)

Country Link
CN (1) CN202325291U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104563905A (en) * 2015-01-14 2015-04-29 江苏曙光石油钻采设备有限公司 Deepwater petroleum drilling casing pipe joint rotation preventing structure
CN106694559A (en) * 2016-12-30 2017-05-24 中钢集团邢台机械轧辊有限公司 Key-connection combined vertical roll
CN112412349A (en) * 2020-11-29 2021-02-26 江苏力克石油机械有限公司 Rotatory buckle formula oil production pipe anticreep device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104563905A (en) * 2015-01-14 2015-04-29 江苏曙光石油钻采设备有限公司 Deepwater petroleum drilling casing pipe joint rotation preventing structure
CN106694559A (en) * 2016-12-30 2017-05-24 中钢集团邢台机械轧辊有限公司 Key-connection combined vertical roll
CN112412349A (en) * 2020-11-29 2021-02-26 江苏力克石油机械有限公司 Rotatory buckle formula oil production pipe anticreep device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120711

Termination date: 20121125