Hydraulic locking device and method for blowout preventer

A technology of locking device and blowout preventer, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc., can solve the problem that the locking rod cannot be completely locked, and achieves a simple and reliable working principle, self-contained The effect of size reduction

Pending Publication Date: 2018-12-25
CHINA MERCHANTS HEAVY IND JIANGSU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing locking device of the ram BOP, the locking slider will still move backward in the locked state, resulting in the inability of the locking lever to be fully locked

Method used

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  • Hydraulic locking device and method for blowout preventer
  • Hydraulic locking device and method for blowout preventer
  • Hydraulic locking device and method for blowout preventer

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0026] The up, down, left, and right mentioned in this application are for the convenience of technical personnel to understand, and only represent the relative connection positional relationship between the structures obtained from the drawings, and are not intended to limit the technical solution of this application.

[0027] figure 1 A blowout preventer hydraulic locking device according to the present invention, comprising: a casing 180 containing a blowout preventer locking rod 140; the blowout preventer locking rod 140 in the The inside of the casing moves up and down along the casing between an unlocked position and a locked position to lock the blowout preve...

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PUM

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Abstract

The invention relates to a hydraulic locking device and method for a blowout preventer, and belongs to drilling control key equipment in the field of marine engineering. The device comprises a lockingdevice cylinder, a locking sliding block and a hydraulic spring brake device. The locking device cylinder is located at the end of a blowout preventer hydraulic cylinder and connected with the blowout preventer hydraulic cylinder; the locking sliding block is arranged in the locking device cylinder, and the two ends of the locking sliding block are pushed by hydraulic pressure to lock the position of a blowout preventer locking rod; the hydraulic spring brake device is located outside the locking device cylinder, a brake piston and a brake shaft which are inserted into the locking device cylinder drive a brake pad to fasten the locking sliding block to complete locking of the locking sliding block and prevent the locking sliding block from moving backward, thereby ensuring locking of theblowout preventer locking rod. The hydraulic locking device and method for the blowout preventer have the advantages that the structure is more compact, the safe design is achieved, the device is safer and more reliable; the device is simple in structure and easy to install.

Description

technical field [0001] The invention relates to the field of offshore drilling engineering, in particular to a locking device for a ram blowout preventer. Background technique [0002] The ram blowout preventer is the most important well control equipment in the process of drilling and completion of oil production. The main features of the ram blowout preventer: first, the ram has strong sealing ability, high reliability, high pressure resistance, and can keep the closed state for a long time to close the wellhead; The rams for pipes and oil pipes can also be equipped with full-sealing rams to close empty wells, and shear rams to cut drill pipes in emergency situations. [0003] After the ram BOP is closed, the BOP locking rod needs to be kept in a fixed position for a relatively long period of time, but under the action of wellhead pressure, the BOP locking rod may not be able to move due to the movement of the locking slider. Fully locked. If the locking rod of the BOP ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06E21B23/04
CPCE21B33/06E21B23/04
Inventor 徐立新缪宸陈文科袁远刘建成曹慧祝传钰庞晓波
Owner CHINA MERCHANTS HEAVY IND JIANGSU
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