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Rotary liner hanger for drilling and completion separately

A liner hanger, tubular technology, applied in wellbore/well components, earthwork drilling and other directions, can solve problems such as inability to cement wells, and achieve the effects of reliable drilling, safe operation and excellent cementing quality

Active Publication Date: 2011-12-28
DAQING PETROLEUM ADMINISTRATION +1
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of existing liner hangers that do not participate in drilling and cannot cement wells under the condition of rotating liner, the present invention provides a rotating liner hanger that can perform drilling and well completion separately. The liner hanger During operation, it can not only participate in drilling, but also perform rotary cementing. It can also be used alone as a completion tool such as a liner hanger for cementing under rotary conditions. It has reliable drilling, safe operation, and high cementing quality. excellent features

Method used

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  • Rotary liner hanger for drilling and completion separately
  • Rotary liner hanger for drilling and completion separately

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing:

[0030] Depend on figure 1 As shown, the rotary liner hanger capable of drilling and completion respectively includes a lower joint 19 and an upper joint 1, which are composed of a hollow plug mechanism, a set-hang mechanism, a setting mechanism and a feeding mechanism;

[0031] The described feeding mechanism mainly transmits the torque through the spline, and at the same time, plays the role of emergency release when the unjamming ball 4 is separated from the upper joint 1 and the central pipe 24 . The feeding mechanism mainly includes an upper joint 1 , a retaining pin pressing cap 6 , a retaining pin 23 and a central tube 24 . The central tube 24 is mainly used for connection. The central tube 24 is tubular, and there are splines outside the middle. The splines mainly play a role in transmitting torque. The corresponding holes of the upper joint 1 and the central tube 2...

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Abstract

A rotary liner hanger for drilling and completion separately. It mainly solves the problem that the existing liner hanger cannot participate in drilling and cannot cement well under the condition of rotating liner. It is characterized in that it is composed of a hollow plug mechanism, a sitting and hanging mechanism, a setting mechanism and a feeding mechanism. The liner hanger can not only participate in drilling during operation, but also perform rotary cementing, and can also be used alone as a liner hanger completion tool for cementing under rotary conditions. It has the advantages of reliable drilling, safe operation, solid Well quality features are excellent.

Description

Technical field: [0001] The invention relates to a hanger used for liner drilling in the field of oil field drilling, in particular to a rotary liner hanger which can perform well drilling and well completion respectively. Background technique: [0002] Casing drilling technology is a revolutionary new technology in the field of drilling worldwide, with broad application prospects. Liner drilling is a form of casing drilling. The liner hanger is one of the core technologies of liner drilling. The current liner hanger cannot fully meet the needs of this technology, and the existing cementing process of the liner hanger has certain disadvantages. At present, the liner hanger developed abroad is mainly used in well completion operations, and the liner hanger used in liner drilling itself does not participate in drilling. At present, domestic liner hangers can only be used for well completion, but not for drilling. The liner hanger used for well completion generally adopts two...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/01
Inventor 刘玉民金志富李秋杰
Owner DAQING PETROLEUM ADMINISTRATION
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