Equipment module yield pressure detection method and device of underwater Christmas tree

Abstract

An embodiment of the invention provides an equipment module yield pressure detection method and device of an underwater Christmas tree. The method includes: filling an equipment module of the underwater Christmas tree with liquid, sealing a port of the equipment module, and injecting liquid into the equipment module through a high-pressure pump; when a ratio of inside pressure of the equipment module to rated pressure is a first preset ratio, stopping injecting the liquid; when the circumstance that the inside pressure of the equipment module does not change is detected within a first preset time period, continuing injecting the liquid into the equipment module to enable a ratio of the inside pressure increased within unit time of the equipment module to the rated pressure to be a preset increase ratio; determining inside pressure changing amount and liquid entering amount of the equipment module to determine a turning point from a linear relation to a nonlinear relation, and taking inside pressure corresponding to the turning point as yield pressure, Performance testing of the underwater Christmas tree can be improved, and a guarantee can be provided for long-time, stable and safeworking of the underwater Christmas tree.

Description

technical field [0001] The embodiment of the present invention relates to a performance detection technology of an underwater Christmas tree, in particular to a method and a device for detecting yield pressure of an equipment module of an underwater Christmas tree. Background technique [0002] The subsea tree is an indispensable part of any subsea system. It is a component located at the opening to the top of the oil well. It includes valves for measurement and maintenance, safety systems for parking and a series of monitoring instruments. Including many valves that can be used to regulate or prevent the production of crude oil vapor, natural gas and liquids from gushing out of the well. [0003] As the key production equipment in the underwater production system, the subsea tree plays a vital role in controlling the production of oil wells and adjusting the oil output. Its performance will directly determine the operation of the entire subsea production system. state, whi...

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Problems solved by technology

At present, in the performance test research of each equipment module of the subsea tree, there is no research on the yield pressure test of the equipment module. Safe work guarantee

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