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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

technical field [0001] The invention relates to a connection device, in particular to a connection device between a deepwater FPSO (Floating Production Storage and Offloading, floating production storage and offloading device) turret and a steel riser. Background technique [0002] FPSO has been widely used in the world's offshore oil and gas development due to its advantages of full-sea operation, strong sea area adaptability, long-term mooring, large storage capacity, reusable transferability, short construction / modification cycle, low cost, and fast return on investment. It has become a mainstream facility for offshore oil and gas production. With the expansion of the offshore oil industry to the deep water field and the development of marginal oil fields, there will be a potential market and broad development space for FPSO. FPSO usually has a large oil storage capacity and high stability. However, due to the large water plane of FPSO, it can be used in the periodic sec...

Claims

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Application Information

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IPC IPC(8): B63B35/44
Inventor 曹静周巍伟沙勇康庄宋儒鑫康有为李丽玮谢彬李新仲
Owner CHINA NAT OFFSHORE OIL CORP
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