Deepwater pipeline multi-circuit jumper system and its test installation method

Abstract

The invention discloses a deep water pipeline multi-circuit bridging system and a testing and installing method thereof. The deep water pipeline multi-circuit bridging system comprises a seabed manifold, an underwater electric distribution assembly, a first underwater Christmas tree, a second underwater Christmas tree, a first underwater umbilical cable terminal and a second underwater umbilical cable terminal, wherein the seabed manifold, the underwater electric distribution assembly, the first underwater Christmas tree, the second underwater Christmas tree, the first underwater umbilical cable terminal and the second underwater umbilical cable terminal are connected through a hydraulic bridging wire and a water and gas injection pipeline. The hydraulic bridging wire comprises male connector terminals and female connector terminals matched with the male connector terminals. The testing and installing method of the deep water pipeline multi-circuit bridging system includes the following steps that a leakage test and a flushing test are performed on the male connector terminals and the female connector terminals, after the tests are finished, the water and gas injection pipeline and the hydraulic bridging wire are moved underwater, and the water and gas injection pipeline and the hydraulic bridging wire are installed between underwater equipment respectively through the ROV operation. According to the deep water pipeline multi-circuit bridging system and the testing and installing method thereof, fast connecting and disconnecting between the underwater equipment can be achieved, it is ensured that all key parts and moving portions can be recycled, and the stopping and connecting states of an ROV can be safe and reliable.

Description

technical field [0001] The invention relates to the technical field of offshore oil and gas exploitation, in particular to a deep-water pipeline multi-circuit bridging system for connecting oil and gas drilling and production manifolds and its testing and installation methods. Background technique [0002] In hydraulic pipelines or water pipelines, it is often encountered that the pipelines are connected. In the process of connecting or disconnecting the pipeline, how to ensure the sealing degree of the pipeline and optimize the connection method of the connecting joint is a technical problem. Especially in the marine environment, the technical difficulty of drilling and producing oil in the ocean is much greater than that of drilling and producing oil on land. In order to adapt to the specific working environment of the ocean, there are corresponding technical requirements for the supporting oil drilling equipment, and the most basic technical requirement is that no leakag...

AI Technical Summary

Problems solved by technology

In addition, in the existing quick connectors, the internal structure of the male connector and the female connector is relatively complicated. In the case of a complex structure, it is difficult to guarantee the sealing performance, especially in the high-pressure environment such as the marine field, when the male connector and the female connector are docked. The operation of connecting the inner channel between the male connector and the female connector is cumbersome and the connection speed is slow

The existing quick connectors have poor sealing effect and may easily cause fluid leakage

[0004] At the same time, in the field of offshore oil and gas production, two underwater devices (such as Christmas trees and manifolds) are usually connected by jumpers. The traditional jumper structure is relatively complicated, and it is inconvenient to connect with trees or manifolds. It is not convenient for ROV operation, the connection efficiency is low, and the sealing performance cannot be guaranteed

[0005] The disadvantages of the existing technology are: the existing quick-installation joints cannot take into account the effect of instant cut-off and fast clamping, and the clamping method is relatively traditional, and threaded connection is mostly used, and specific tools are required for disassembly or connection. It is very troublesome to operate, which makes the operator time-consuming and laborious, and the pipeline cannot be connected in time and quickly during the operation process. At the same time, the structure is relatively complicated and there are many components, so that the sealing performance cannot be guaranteed, and the existing jumper wire , the connection is cumbersome and the operation is inconvenient

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