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Rotary blowout preventer and system capable of monitoring rubber core state and preventing drilling fluid from overflowing

A technology of rotating blowout preventer and drilling fluid, which is applied in the directions of surveying, earthwork drilling, wellbore/well components, etc. It can solve the problems of heavy labor, inability to remotely monitor the state of rubber core, limited pressure level, etc., and reduce labor Strength, avoid repeated wellhead climbing, and meet environmental protection requirements

Pending Publication Date: 2022-06-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this equipment can only achieve environmental protection to a certain extent, and cannot remotely monitor the state of the rubber core, and is locked by manual operation, the pressure level is limited, and the on-site operation requires a lot of labor.

Method used

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  • Rotary blowout preventer and system capable of monitoring rubber core state and preventing drilling fluid from overflowing
  • Rotary blowout preventer and system capable of monitoring rubber core state and preventing drilling fluid from overflowing
  • Rotary blowout preventer and system capable of monitoring rubber core state and preventing drilling fluid from overflowing

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Embodiment Construction

[0054] Hereinafter, a self-locking rotary blowout preventer capable of monitoring the state of the rubber core and preventing the overflow of drilling fluid of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments. It should be noted that "first", "second", etc. are only for the convenience of description and distinction, and should not be construed as indicating or implying relative importance. "Upper", "lower", "inner" and "outer" are only for convenience of description and constitute relative orientation or positional relationship, and do not indicate or imply that the referred component must have the specific orientation or position.

[0055] In the first exemplary embodiment of the present invention, the self-locking rotary blowout preventer capable of monitoring the state of the rubber core and preventing the overflow of drilling fluid mainly includes three parts: a casing assembly, a rotating assembly and ...

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Abstract

The invention provides a rotary blowout preventer and system capable of monitoring the state of a rubber core and preventing drilling fluid from overflowing, the rotary blowout preventer comprises a shell assembly, a rotary assembly and a drilling fluid recovery drainage device, the shell assembly comprises a shell, a first pressure sensor and at least two hydraulic cylinder locking assemblies, the shell is fixedly and hermetically connected with the wellhead annular blowout preventer, the first pressure sensor can detect the internal pressure of the shell, and the rotating assembly and the shell assembly are locked by the at least two groups of hydraulic cylinder locking assemblies; the drilling fluid recovery and drainage device can pump leaked drilling fluid into the drilling fluid circulation tank; the rotating assembly is arranged in the shell assembly and can rotate relative to the shell assembly along the axis of the shell assembly, and the rotating assembly can seal an inner channel of the shell assembly. The device has the beneficial effects that centralized recovery of drilling fluid can be realized, the safety of a drilling environment is protected, and the sealing state of the rubber core can be remotely judged.

Description

technical field [0001] The invention relates to the technical field of energy drilling, in particular to a rotary blowout preventer and a system capable of monitoring the state of a rubber core and preventing the overflow of drilling fluid. Background technique [0002] At present, oil drilling has entered the stage of highly difficult and high-risk drilling operations such as deep wells and ultra-deep wells, offshore deep water and deep layers, complex ground conditions and complex strata, shale gas, and geothermal resources exploration and development. higher requirements. Rotary blowout preventer is a key equipment for managed pressure drilling, which is widely used in major oil fields and various underbalanced and gas drilling construction sites. [0003] However, a new type of environmentally friendly rotary blowout preventer is urgently needed in the technical services of marine managed pressure drilling to meet the needs of underbalanced drilling and managed pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/08E21B33/06E21B41/00E21B47/00E21B47/06
CPCE21B33/085E21B33/06E21B41/00E21B47/00E21B47/06
Inventor 刘小玮杨玻许期聪雷雨任伟李赛舒梅左星刘庆唐国军梁玉林江迎军
Owner BC P INC CHINA NAT PETROLEUM CORP
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