Subsea production tree and tubing hanger flushing device

Abstract

The invention discloses a subsea production tree and tubing hanger flushing device, which comprise a rock debris collecting barrel, wherein the bottom of the rock debris collecting barrel is fixedly connected with the upper part step surface of a device body through a first fastening element; the upper end of the rock debris collecting barrel is in a reverse conical shape; upper drain holes a and lower drain holes b are uniformly distributed in the outer wall of the rock debris collecting barrel in the circumference direction; and an adsorption magnet is arranged in an inner cavity of the rock debris collecting barrel, and is fixed on the outer cylinder surface of the device body through a second fastening element. The subsea production tree and tubing hanger flushing device has the advantages that the sealing reliability of a tubing hanger is improved; and the working life of a locking ring and the working life of a sealing assembly are greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of offshore oil drilling equipment, and relates to a flushing device for an underwater Christmas tree and a tubing hanger. Background technique [0002] As an important part of the subsea production system, the subsea tree is under higher pressure and harsher environment than the land tree. It is installed through workover and well completion control systems. Workover or recovery operations are difficult, highly complex, and have many uncertain factors. Subsea tree installation, well workover or recovery operations take a long time, have high risks, and high costs, which require subsea trees to be more reliable. performance, and sealing performance is a key factor affecting its reliability. Before the installation of underwater equipment such as tubing hangers and Christmas tree caps, the rapid and effective flushing of the target sealing surface, seating surface, installation guide groove and installation ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a flushing device for an underwater Christmas tree and a tubing hanger, which solves the problem that the prior art is not equipped with a special flushing device, so that in the actual operation process, the internal cleaning of the components is not thorough, which may easily cause the test to fail. Recycling the equipment to the operating platform for processing increases the time and risk of underwater equipment installation and reduces work efficiency

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