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Method for mounting deep water oil-gas platform steel catenary stand pipes

An installation method, catenary technology, applied in the direction of pipeline laying and maintenance, pipe/pipe joint/pipe fittings, mechanical equipment, etc., can solve problems such as mutual collision

Inactive Publication Date: 2017-08-04
OFFSHORE OIL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to overcome the above-mentioned shortcomings of existing steel catenary riser installation methods, and provide a steel catenary riser installation method for deep-water oil and gas platforms, which is suitable for multiple steel catenary risers in newly built deep-water oil and gas platforms. The installation of catenary risers can solve the problem of multiple steel catenary risers colliding with each other and crossing other existing pipelines and floating platform mooring anchor cables during installation

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  • Method for mounting deep water oil-gas platform steel catenary stand pipes
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  • Method for mounting deep water oil-gas platform steel catenary stand pipes

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Embodiment Construction

[0030] The floating platform of a large offshore oil field has multiple steel catenary risers installed on the floating platform. figure 1 It is a schematic diagram of the existing common deepwater floating platform mooring system and riser system. The method for arranging the standpipe can prevent the standpipe and the drill pipe from colliding with each other, without affecting the drilling operation, and each standpipe goes in different directions without affecting each other. Multiple standpipes can be arranged for a wide range of applications. Wherein 101 is a floating platform, and 102 is a mooring anchor cable of the floating platform. 103 is a steel catenary riser installed on both sides of the platform.

[0031] figure 2 It is a schematic side view diagram of the mooring system and riser system of the existing common deep-water floating platform, showing the state that the riser is suspended on both sides of the existing common deep-water floating platform. Where...

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Abstract

The invention provides a method for mounting deep water oil-gas platform steel catenary stand pipes. The method comprises the steps that 1, the stand pipes are recycled; 2, the stand pipes pass through a platform in a bottom striding manner; and 3, the stand pipes and the platform are connected back. The method is suitable for mounting the multiple steel catenary stand pipes of the newly built deep water oil-gas platform, and the problem that the multiple steel catenary stand pipes collide in the mounting process and pass through other existing pipelines and a floating type platform for anchor cable mooring is solved.

Description

technical field [0001] The invention relates to a method for installing a steel catenary riser on a deep-water oil and gas platform. Background technique [0002] Steel Catenary Riser (SCR, Steel Catenary Riser) is an extension of the deepwater submarine pipeline, used to connect the subsea oil and gas production system and the deepwater floating platform, and is a key structure for deepwater oil and gas production and development. There are two ways to install the deep-water steel catenary riser. One is that the riser is laid from the side of the mother platform to the seabed terminal, which is suitable for the follow-up development project of the existing platform; the other is that the sea pipe is laid by the seabed The terminal side is laid in the direction of the mother platform, which is suitable for the riser installation project of the new platform. The technical requirements and details of these two installation methods are very different. The present invention is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/15F16L1/20
CPCF16L1/15F16L1/202
Inventor 陈永訢朱绍华李建楠李斌杜永军刘凯王铭飞苏志勇宋亚新罗勇
Owner OFFSHORE OIL ENG CO LTD