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Installation method of production riser of self-elevating drilling platform

A technology for drilling platforms and installation methods, which is applied in the direction of drilling pipes, drilling equipment, drilling pipes, etc., can solve the problems of unsuitable jack-up platforms and large platform displacements, and achieve the effect of solving irregular positioning and evacuation

Active Publication Date: 2018-09-18
OFFSHORE OIL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the great differences in the structure of the overall structure of the jack-up drilling platform, the structure of the pile leg system and the jacket structure, the platform displacement of the jack-up drilling platform is larger than that of the platform of the fixed jacket
And because the jack-up drilling platform has a movable function, it needs to carry out unscheduled positioning and evacuation operations
Therefore, the existing production riser structure is no longer suitable for use on jack-up platforms

Method used

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  • Installation method of production riser of self-elevating drilling platform
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  • Installation method of production riser of self-elevating drilling platform

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Embodiment Construction

[0028] Such as figure 1 — Image 6 As shown, the present invention includes: a rigid standpipe and a hose expansion bend 3 connected with the rigid standpipe, wherein the rigid standpipe is limited by the standpipe pipe clamp 4, and is installed on the automatic riser by the standpipe suspension device 5 On the lifting drilling platform 9.

[0029] The above-mentioned rigid riser is composed of the production riser main body 1 and the production riser bottom 2, wherein the production riser main body 1 is composed of several segmented riser connections; the riser pipe clip 4 is composed of the clip main body 6 and the clip The limit structure 7 is connected to form.

[0030] The above-mentioned hose expansion bend 3 is connected to the bottom 2 of the production riser through a flange, the clip body 6 is installed on the set position of the production riser body 1 by welding, and the clip limit structure 7 adopts a bolt connection method and the clip body 6 connected togethe...

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Abstract

The invention discloses an installation method of a production riser of a self-elevating drilling platform. The installation method comprises the following steps that 1, the production riser is prefabricated; 2, the bottom of the production riser is lifted to a side of the self-elevating drilling platform to be fixed; 3, a traction rope is lowered and connected with the bottom of the production riser at the side; 4, the bottom of the production riser is pulled into a reserved slide rail on platform pile legs; 5, the bottom of the production riser is lifted; 6, the production riser is lowered and clamp bodies on the production riser are put in place on riser suspension devices, and then clamp limiting structures are installed; 7, sections of a production riser body are hoisted into the reserved slide rail to complete the butt joint with the bottom of production riser, and the sections of the production riser body are connected with the bottom of the production riser; and 8, the bottom of the production riser is lifted until a next clamp body on the production riser body is put in place on the corresponding riser suspension device. The installation method of the production riser of the self-elevating drilling platform solves the problem that the self-elevating drilling platform has large displacement and needs to be put in place and evacuated irregularly.

Description

technical field [0001] The invention relates to a production riser, in particular to a method for installing a production riser of a self-elevating drilling platform. It belongs to the field of offshore oil engineering. Background technique [0002] Submarine pipeline is an important part of deepwater oil and gas field development engineering construction. Offshore production riser installations are usually installed on fixed jacket platforms. [0003] At present, in order to further expand the function of the jack-up drilling platform and increase a certain production capacity based on the drilling function of the jack-up drilling platform, it is necessary to design a production riser device suitable for the jack-up drilling platform. Due to the great differences in the overall structure of the jack-up drilling platform, the leg system structure and the jacket structure, the platform displacement of the jack-up drilling platform is larger than that of the fixed jacket pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/02E02B17/00
CPCE02B17/00E02B2017/0039E21B19/02
Inventor 孙国民王辉钟文军刘培林赵党何宁赵明冯现洪潘悦然杨琥苑健康王凤莲黄曙光王彦瑞郭庆冯宪文邬智慧顾天宝
Owner OFFSHORE OIL ENG
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