Connecting device for deepwater FPSO rotating tower and rigid stand pipe

A technology of connecting device and flexible riser, applied in the direction of floating buildings, etc., can solve the problems of system risk, reduce FPSO load, expensive construction, etc., and achieve the effect of reducing technical requirements, improving fatigue life, and increasing bending stiffness

Active Publication Date: 2014-07-23
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The flexible jumping pipe of the single-top tensile riser/composite riser tower is directly connected to the FPSO turret. The flexible jumping pipe has a shorter length and less liquid in the pipe, which reduces the load on the FPSO. Therefore, in the FPSO turret Deep waters have been promoted to a certain extent, but due to its high cost, it is difficult to promote i

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  • Connecting device for deepwater FPSO rotating tower and rigid stand pipe

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 As shown, the present invention includes a flexible standpipe 1, an I-shaped pipe 2, a support block 3, a centering device 4 and a bend stopper 5.

[0015] Wherein, both ends of the flexible riser 1 are provided with flanges, the upper end of the flexible riser 1 is fastened to the FPSO turret 6 through the flange, and the lower end is fastened to the steel riser 7 through the flange, so that the rigid riser The oil and gas in the pipe 7 are transported to the FPSO turret 6 through the flexible riser 1 . The I-shaped pipe 2 is sleeved on the upper part of the flexible riser 1, and flanges are also provided at both ends of the I-shaped pipe 2. The upper end of the I-shaped pipe 2 is rigidly connected to the FPSO turret 6 through the flange to ensure that the flexible riser 1 is vertically connected to the FPSO. Turret 6, easy ...

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Abstract

The invention relates to a connecting device for a deepwater FPSO rotating tower and a rigid stand pipe. The connecting device for the deepwater FPSO rotating tower and the rigid stand pipe is characterized by comprising a flexible stand pipe, an I-type pipe, a supporting block, a centering device and a bending stopping device. Through the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe, the rigid stand pipe at low cost can be directly connected to the FPSO rotating tower, the selection of production pipes of FPSOs operating in deepwater areas is not limited to single-top stretching stand pipes, composite stand pipe towers and flexible stand pipes which are extremely high in cost any more, the technical requirements for the connectors of the stand pipe of the FPSO rotating tower are lowered, and cost is lowered to a certain extent. Even though the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe is designed for the FPSO rotating tower, the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe can also be popularized to connection of other types of offshore floating type structures and rigid stand pipes, and therefore, the connecting device for the deepwater FPSO rotating tower and the rigid stand pipe can be widely applied to the fields of deep sea engineering and deep sea oil and gas resource development.

Description

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Claims

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Application Information

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Owner CHINA NAT OFFSHORE OIL CORP
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