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Laying process of subsea pipeline crossing floating production and storage device system

A technology for floating production and storage of oil and submarine pipelines, which is applied in pipeline laying and maintenance, mechanical equipment, pipes/pipe joints/fittings, etc., to achieve the effect of low difficulty of operation, simple process operation and simple process

Active Publication Date: 2011-12-07
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
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Problems solved by technology

[0003] The main purpose of the present invention is to overcome the disadvantage that the conventional pipe laying method cannot lay the submarine pipeline passing through the floating production and storage device system, and provide a laying process for the submarine pipeline passing through the floating production and storage device system. Without affecting the normal production of the FPSO system, the subsea pipeline laying operation across the FPSO system is realized, which is convenient for the subsea pipeline laying operation

Method used

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  • Laying process of subsea pipeline crossing floating production and storage device system
  • Laying process of subsea pipeline crossing floating production and storage device system
  • Laying process of subsea pipeline crossing floating production and storage device system

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Embodiment Construction

[0033] Such as Figure 1 to Figure 9 As shown, the laying process of the submarine pipeline passing through the floating production and storage device system of the present invention is characterized in that it includes installing the starting anchor, laying the starting cable, laying the crossing section pipeline, and dragging the crossing section pipeline through the floating production and storage device system (FPSO), the pipeline tension test of the crossing section and the steps of laying the submarine pipeline; among them:

[0034] The step of installing the initial anchor is to install the initial laying fixed point on the seabed. The fixed point is located on the extension line of the pipeline route in the crossing section. The initial anchor 4 is used as the initial laying fixed point. The machine places the starting anchor on the seabed, such as figure 1 shown;

[0035] The step of laying the starting cable is to lay the starting cable connected with the starting ...

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Abstract

The invention provides a laying process for a submarine pipeline traversing floating type production oil-storing device system. The laying process comprising the following steps: installing a starting anchor, laying a starting cable, laying a traversing part pipeline, a traversing part drag-traversing floating type production oil-storing device system, a traversing part pipeline tension test and laying a submarine pipeline; and the laying process is adopted to realize the submarine pipeline laying task of the traversing floating type production oil-storing device system without influencing the normal production of the floating type production oil-storing system, thus being convenient in the submarine pipeline laying task.

Description

technical field [0001] The invention relates to a laying process of a submarine pipeline crossing a floating production oil storage device system. Background technique [0002] Generally, the subsea pipelines crossing the Floating Production, Storage and Offloading System (FPSO) are laid before the installation of the FPSO system. After the FPSO system is in place, the existing conventional pipeline laying methods cannot cross the FPSO system. Submarine pipeline laying operations, because after the FPSO system is installed, the FPSO system cannot be dismantled, and the FPSO system occupies the position of the pipe-laying ship, and the pipe-laying ship cannot perform pipe-laying operations, so the submarine pipeline laying through the FPSO system is a subsea pipeline engineering field Facing a problem to solve. Contents of the invention [0003] The main purpose of the present invention is to overcome the disadvantage that the conventional pipe laying method cannot lay the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/12
Inventor 邢厚宽燕晖康一龙杜永军
Owner CHINA NAT OFFSHORE OIL CORP
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