Nitrogen stand-by system of ground blowout preventer control device

Abstract

The invention discloses a nitrogen stand-by system of a ground blowout preventer control device and belongs to the technical field of petroleum drilling control. The nitrogen stand-by system provides high-pressure gas serving as an emergency power source for the ground blowout preventer control device and comprises a high-pressure nitrogen gas cylinder, a valve and relevant pipelines. The relevant pipelines of the nitrogen stand-by system include at least a first group of pipelines, a second group of pipelines, a third group of pipelines and a fourth group of pipelines. A nitrogen pressure reducing valve, a nitrogen cylinder valve and a high-pressure nitrogen cylinder are sequentially arranged on the first group of pipelines of the nitrogen stand-by system, wherein the nitrogen pressure reducing valve is connected with a driller's console of the ground blowout preventer control device and a gas inlet of an auxiliary console through an external hose. When an emergency situation occurs in a field and a well is required to be rapidly closed, emergency auxiliary energy is provided for a control manifold of the ground blowout preventer control device, and blowout and other major accidents caused by the fact that an energy accumulator group or a pump group of the ground blowout preventer control device cannot provide a power fluid for the control manifold.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling well control, in particular to a nitrogen backup system of a ground blowout preventer control device. Background technique [0002] The surface blowout preventer control device is an important equipment for controlling the wellhead blowout preventer group, hydraulic throttle valve and well kill valve in oil and gas drilling, and is the necessary safety equipment for preventing blowout in drilling operations. [0003] The prior art ground BOP control device is mainly composed of remote console, hydraulic pipeline, driller's console or auxiliary console, and air pipe cable; the driller's console or auxiliary console is usually installed on the ground BOP control It is installed on the drill floor, so that the driller can easily realize the remote control of the remote console. The remote console is composed of a base, a fuel tank, a pump group, an accumulator group, a control manifold, v...

AI Technical Summary

Problems solved by technology

[0005] However, if there is an emergency situation where a sudden blowout on site requires well closure, and the accumulator group or pump group of the ground BOP control device accidentally causes insufficient fluid volume or pressure to provide power fluid for the control manifold, It will lead to failure to close the well in time and blowout, which will lead to major safety accidents

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