Decompression valve throttling device for sharply increasing pressure in well cementation

Abstract

The invention discloses a throttling device for a cementing bumper pressure relief valve, which comprises an external threaded joint and an internal threaded joint, a center pipe is arranged at the center of the external threaded joint, and an internal thread buckle is provided at one end of the external threaded joint. One end is provided with an external thread union, the internal thread union is connected with the grouting gate, the external thread union is connected with the cementing pressure relief valve, and the side of the external thread joint is provided with an external thread A union joint, one end of the internal threaded joint is provided with a casing as a mud cover, and a high-pressure self-sealing joint is provided at the top of the casing as a mud cover. The throttling device of the cementing pressure relief valve of the present invention can prevent high-pressure drilling fluid from splashing and hurting people, protect the environment, reduce the labor intensity of workers, improve the working time and the safety factor of the equipment, and has a simple structure and low cost. Easy to operate.

Description

technical field [0001] The invention relates to an auxiliary device used in an oil field, in particular to a throttling device for a cementing bump pressure relief valve. Background technique [0002] In the current cementing construction, when the mud is bumped, the pump pressure is high, and the pump is not stopped in time, the pressure relief valve at the standpipe will suddenly open to release the pressure. At this time, the drilling fluid will splash all over the site and pollute the environment. If there are people around, Drilling fluid will injure personnel and cause personal injury, which is prone to accidents and affects life and property. Contents of the invention [0003] The technical problem solved by the present invention is to provide a throttling device for a cementing pressure bump relief valve, which has a simple structure, is easy to operate, and improves safety performance and working time. [0004] In order to solve the above-mentioned technical prob...

AI Technical Summary

Problems solved by technology

[0002] In the current cementing construction, when the mud is bumped, the pump pressure is high, and the pump is not stopped in time, the pressure relief valve at the standpipe will suddenly open to release the pressure. At this time, the drilling fluid will splash all over the site and pollute the environment. If there are people around, Drilling fluid will injure people and cause personal injury, which is prone to accidents and affects life and property

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