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A method and device for maintaining and replacing crude oil standpipes on an offshore platform

A technology for maintenance and replacement of offshore platforms, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve the problems of long construction period, high cost, and only maintenance of riser sections above the water surface, etc., to achieve shortening The time and effect of reducing cost output

Active Publication Date: 2016-04-13
CNOOC ENERGY TECH & SERVICES +2
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Problems solved by technology

[0002] The existing maintenance and replacement technology for crude oil risers on offshore platforms is divided into above-water maintenance and replacement technology and underwater maintenance and replacement technology according to the different damaged parts. The maintenance and replacement of the risers above the water adopts conventional methods to cut and replace crude oil risers above the water surface, and only the water surface can be repaired. The riser section above; the underwater riser maintenance and replacement technology mainly uses saturation diving equipment and technology or air diving technology to repair and replace crude oil risers, and its disadvantages are high cost and long construction period

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  • A method and device for maintaining and replacing crude oil standpipes on an offshore platform
  • A method and device for maintaining and replacing crude oil standpipes on an offshore platform
  • A method and device for maintaining and replacing crude oil standpipes on an offshore platform

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The schematic implementation and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0035] see figure 1 , which is a schematic diagram of the main structure frame of an offshore platform crude oil riser maintenance and replacement device according to the present invention, including a water-resistant tank 10, a water-resistant tank pipe clip 20, a frustum-shaped sealing assembly 30 and a water pump. The water-proof tank 10 is a cavity structure with an opening upward, and a through hole is provided at the bottom for the crude oil standpipe to pass through. The frustum-shaped sealing assembly 30 is used for sealing the gap between the crude oil riser and the watertight tank after the crude oil riser passes through the through hole. The water pump is c...

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Abstract

The invention discloses an offshore platform crude oil riser maintenance and replacement method and device. The device comprises a water proof chamber, a round table sealing assembly, a water pump and water proof chamber pipe clamps, wherein the water proof chamber is of a cavity structure with an upward opening and is provided with a through hole for a crude oil riser to pass through at the bottom, the round table sealing assembly is used for sealing a gap between the crude oil riser passing through the through hole and the water proof chamber, the water pump is connected to the bottom of the water proof chamber through a pipe, and the water proof chamber pipe clamps are respectively connected with the water proof chamber and an offshore platform spud leg. The offshore platform crude oil riser maintenance and replacement method and device utilizes the water proof chamber for the offshore platform crude oil riser maintenance and replacement, thereby reducing the security risk of marine operations, providing safeguard for the safe production of the platform, significantly shortening the platform shutdown period, and greatly reducing the cost of manual output.

Description

technical field [0001] The invention relates to a maintenance and replacement method and device for an offshore platform crude oil standpipe. Background technique [0002] The existing maintenance and replacement technology for crude oil risers on offshore platforms is divided into above-water maintenance and replacement technology and underwater maintenance and replacement technology according to the different damaged parts. The maintenance and replacement of the risers above the water adopts conventional methods to cut and replace crude oil risers above the water surface, and only the water surface can be repaired. The riser section above; underwater riser maintenance and replacement technology mainly uses saturation diving equipment and technology or air diving technology for crude oil riser maintenance and replacement, and its disadvantages are high cost and long construction period. Contents of the invention [0003] The purpose of the present invention is to provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/26
CPCF16L1/26
Inventor 王英叶冠群黄敢杨清邱中平吴成平赖书斌陈祺频刘剑李成志李红谢树军梁远修黄岩廖川张今士
Owner CNOOC ENERGY TECH & SERVICES
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