Blowout rescue device and method for clustered well head of marine drilling platform

An offshore drilling platform and platform technology, applied in wellbore/well components, earthwork drilling, sealing/packing, etc., can solve problems such as inability to carry out blowout rescue work, worker life safety, marine environmental hazards, and limited space, etc. Achieve the effect of reducing the labor intensity of workers, shortening operation time, and enhancing safety

Active Publication Date: 2016-09-28
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The space of the offshore drilling platform is small, and the cluster wellheads are densely distributed. Once a blowout accident occurs, it is almost impossible to carry out the rescue work of the blowout. The resulting toxic gas and explosion will cause great harm to the safety of workers and the marine environment.

Method used

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  • Blowout rescue device and method for clustered well head of marine drilling platform
  • Blowout rescue device and method for clustered well head of marine drilling platform
  • Blowout rescue device and method for clustered well head of marine drilling platform

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The invention proposes a blowout rescue device for cluster wellheads on an offshore drilling platform. During the drilling and completion of cluster wells on an offshore drilling platform, when a blowout occurs and the wellhead casing head is severely damaged, the damaged blowout preventer and casing at the wellhead can be cleaned up. After the pipe head, the blowout emergency device proposed by the present invention can be connected with the light casin...

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Abstract

The invention provides a blowout rescue device for a clustered well head of a marine drilling platform. When a blowout accident occurs in a drilling and completion process, the blowout rescue device after being in place can be rapidly and automatically butted with a light casing head, and closes a fluid channel in a casing by closing an annular blowout preventer and a blind ram blowout preventer after butted joint. The blowout rescue device comprises a rootage system, a bottom fixing bracket, fixing bracket supports, fixing bracket moving oil cylinders, a second-layer frame, lifting oil cylinders, a racking platform, transverse guide rails, a fixing bracket, the blind ram blowout preventer, a blowout spool, a sliding support, longitudinal guide rails, the annular blowout preventer, a casing chucking device, fixing bracket moving tracks and lifting oil cylinder support barrels. The device can rapidly and automatically close the well head during blowout of the clustered well of the marine drilling platform, improves safety of a blowout rescue process, prevents explosion and fire accidents of the marine drilling platform due to blowout and reduces economic loss.

Description

technical field [0001] The invention relates to a blowout rescue device in the process of drilling and completing wells in the petroleum industry, in particular to a rescue device for blowouts occurring during the drilling and completion of cluster wells on an offshore drilling platform, and also relates to a blowout emergency device during the drilling and completion of cluster wells on an offshore drilling platform. Rescue method in case of blowout. Background technique [0002] During the drilling and completion process of offshore drilling platforms, due to inaccurate control of formation pressure, low mud density, tripping suction and other improper measures, blowout accidents are easily caused. Blowout accidents are catastrophic accidents that may cause serious casualties , environmental pollution and huge property losses. [0003] Compared with land drilling, offshore drilling platforms are more prone to blowout accidents during drilling and completion due to factors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/064E21B33/038
CPCE21B33/038E21B33/064
Inventor 牛文杰郑士坡徐箐箐刘赫徐囯慧
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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