Compact underwater high-integrity pressure protection system strengthening area device

Abstract

The invention relates to a compact underwater high-integrity pressure protection system reinforcing area device. The device comprises a mounting chassis; the reinforcing area pipeline is formed by coiling a hard pipeline, and the reinforcing area pipeline is fixedly mounted on the mounting chassis; one end of the production well crossover pipe connector is connected with a production well crossover pipe, and the other end of the production well crossover pipe connector is connected with an inlet of the reinforcing area pipeline; one end of the manifold crossover pipe connector is connected with an outlet of the reinforcing area pipeline, the other end of the manifold crossover pipe connector is connected with the downstream low-pressure manifold, and the production well crossover pipe connector and the manifold crossover pipe connector are both installed on the installation chassis. The strengthening area device is high in pipeline design pressure and high in pressure bearing capacity and can meet the pressure requirement for pressure rise caused by downstream blockage in the SHIPPS switching-off execution process, and then the safety of underwater production facilities in the switching-off execution process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of deep-water gas field development, and in particular relates to a compact underwater high-integrity pressure protection system (Subsea High Integrity Pressure Protective System, hereinafter referred to as SHIPPS) strengthening zone device. Background technique [0002] Generally, in the process of deepwater gas field development, the shut-in pressure of the subsea wellhead is very high. During the process of connecting the subsea production system to the supporting platform for gathering and transportation, the possible overpressure conditions will be caused by the following two types of accidents: (1) The oil nozzle of the Christmas tree fails to fully open; (2) The emergency shutdown of production caused by the platform technology accident or the blockage of hydrate in the submarine pipeline due to the low transmission temperature. When an overpressure condition occurs, the pressure in the pipeline will ...

AI Technical Summary

Problems solved by technology

However, the hose material cannot be localized at present, and needs to be imported, which is expensive and has a slow construction period; under the existing technology, the hose is used as the pipeline material in the reinforcement area, which occupies a large area of ​​the seabed.

Because there must be a certain safety distance between other underwater production facilities and the sea pipe, it is not conducive to the installation and construction of the underwater production facility and the sea pipe, and it also affects the safe positioning of the drilling ship during the subsequent adjustment well drilling process.

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