Rotary tail pipe hanger capable of respectively drilling and completing

A liner hanger and tubular technology, applied in wellbore/well parts, earthwork drilling and production, etc., can solve problems such as inability to cement wells, and achieve reliable drilling, safe operation, and excellent cementing quality

Active Publication Date: 2009-02-04
DAQING PETROLEUM ADMINISTRATION +1
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  • Summary
  • Abstract
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  • Claims
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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 han

Method used

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  • Rotary tail pipe hanger capable of respectively drilling and completing

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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

The invention relates to a rotating tail tube suspending device which can respectively carry out drilling and well completion and mainly solves the problems that the existing tail tube suspending device can not participate in drilling and can not accomplish well cementing under the condition of rotating the tail tube. The invention is characterized by consisting of a hollow stopper mechanism, a sitting-suspending mechanism, a sitting-sealing mechanism and a feed mechanism. When operating, the tail tube suspending device not only can participate in drilling, but also can carry out rotating well cementing; besides, the tail tube suspending device can be independently used as the well completion tool of the rotating tail tube suspending device under a rotating condition and has the characteristics of reliable drilling, safe operation and excellent well cementing quality.

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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IPC IPC(8): E21B23/01
Inventor 刘玉民金志富李秋杰
Owner DAQING PETROLEUM ADMINISTRATION
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