Anti-freezing and anti-theft watering gathering and transportation process flow valve bank for oil well

Abstract

The invention relates to an anti-freezing and anti-theft watering gathering and transportation process flow valve bank for an oil well. The anti-freezing and anti-theft watering gathering and transportation process flow valve bank for the oil well comprises a watering pipe, an incoming water total cut-off valve, a thermal washing cut-off valve, a watering one-way valve, a central watering pipe 1, a central casing pipe, a vertical watering pipe, an oil-gas inlet pipe, a central watering pipe 2, a watering regulating valve, an oil return one-way valve, a vertical oil return pipe, an oil return total cut-off valve and an oil outlet pipe. According to the device, the watering pipe is arranged in a gathering and transportation pipeline, waste heat of watering is utilized to perform cyclic heat preservation on the whole valve bank, if maintenance and well shutdown are needed due to faults of an operation, a wellhead device, a Christmas tree and an oil pumping unit, the overall cyclic heat preservation of the valve bank can be still ensured, and freezing blockage can be avoided.

Description

technical field [0001] The invention belongs to the field of oilfield machinery and equipment, and relates to an antifreeze and antitheft antitheft water-mixed gathering and transportation process flow valve group for oilfields. Background technique [0002] The anti-freezing measures for the combined wellhead of the water-mixing process currently in use are to use insulation layers such as thermal insulation cotton outside the device. Under normal water-mixing conditions, it can ensure that pipelines and equipment will not be blocked by freezing. If the oil well is shut down for a short period of time due to operations, wellhead failures, etc., the water or aqueous mixture in the pipeline will be blocked or cracked due to low temperature freezing, causing the pipeline or equipment on the pipeline to freeze, which will not only affect production, but also cause Frozen equipment caused losses; the existing combined wellhead of the water-mixed process has a messy shape, and th...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-freeze and anti-theft water-mixing process flow valve group for oil fields, which overcomes the problem that the current water-mixing process combination is not easy to keep warm when water is mixed, and it is easy to cause a large amount of heat loss.

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