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A deep-water floating multifunctional dry tree semi-submersible platform and its offshore installation method

A water-floating, multi-functional technology, applied in anchoring arrangement, transportation and packaging, floating buildings, etc., can solve the problems of high cost and poor economy, and achieve the effect of low installation cost, large draft and improved heave performance

Active Publication Date: 2021-09-07
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Condensate oil resources generally need to be transported through pipelines, but laying a separate deepwater condensate oil pipeline is expensive and economical; if the deepwater floating platform has the function of condensate oil storage, the project cost will be greatly reduced

Method used

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  • A deep-water floating multifunctional dry tree semi-submersible platform and its offshore installation method
  • A deep-water floating multifunctional dry tree semi-submersible platform and its offshore installation method
  • A deep-water floating multifunctional dry tree semi-submersible platform and its offshore installation method

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, a deep-water floating multifunctional dry tree semi-submersible platform provided by the present invention includes a main hull 1, an upper block 2 and a grouped mooring system 3. Wherein, the main hull 1 includes an upper floating body 11, a lower floating body 12 and telescopic connection columns 13, ballast tanks and functional compartments are arranged in the upper floating body 11, and a tensioning riser 4, a production riser, and a drilling vertical are provided in the middle of the lower floating body 12. The channel through which pipes and other cables pass; the upper floating body 11 and the lower floating body 12 are connected by a telescopic connection column 13; Topside facilities 21 such as modules and living buildings; the grouped mooring system 3 includes windlasses (not shown) and a plurality of moori...

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Abstract

The invention relates to a deep-water floating multifunctional dry tree semi-submersible platform and an offshore installation method thereof, wherein the semi-submersible platform includes a main hull, an upper block and a grouped mooring system; the main hull includes a ballast tank inside and the upper floating body of the functional compartment, the lower floating body with a channel for the passage of the tensioned riser, the production riser and / or the drilling riser in the middle, and the telescopic connection column connecting the upper floating body and the lower floating body. The main hull is connected by telescopic The column can be switched between the folded state and the unfolded state. In the folded state, the lower floating body is close to the lower part of the upper floating body. In the unfolded state, the lower floating body and the upper floating body maintain a certain distance; the upper block is installed on the upper part of the upper floating body. The upper block includes upper facilities; the grouped mooring system includes a plurality of mooring lines, and the mooring lines are connected with the floating body. The technology of the invention is simple, the installation cost is low, and it can be widely used in the development of oil and gas fields under the environment conditions of deep water ocean.

Description

technical field [0001] The invention belongs to the technical field of deep-water marine oil and gas development, and in particular relates to a deep-water floating multifunctional dry tree semi-submersible platform and an offshore installation method thereof. Background technique [0002] Deepwater floating platform is the main equipment for deepwater offshore oil and gas development. In recent years, a variety of floating production platforms have emerged for deepwater offshore oil and gas development, including semi-submersible platforms, deep-draft single-column platforms, and tension-leg platforms. Among them, the heave motion performance of the semi-submersible platform is poor. As a deep-water oil and gas development and production platform, a wet tree must be used, and the wet tree technology is complicated and expensive; the deep-draft single-column platform has good motion performance and can Dry mining, but the upper and lower parts of the deep-draft single-colum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44B63B75/00B63B21/50
CPCB63B21/50B63B35/4413B63B2021/505B63B71/00
Inventor 谢彬王俊荣谢文会粟京周巍伟王世圣李阳韩旭亮冯加果
Owner CHINA NAT OFFSHORE OIL CORP
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