Offshore oil platform underwater cable disconnecting and reconnecting method and equipment
An underwater cable and offshore oil technology, which is applied in the field of disconnection and reconnection of underwater cables on offshore oil platforms, can solve the problems of long construction period, labor and material resources, etc. Simple equipment and convenient operation
Active Publication Date: 2013-11-27
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide an underwater cable release and reconnection method in view of the problems in the related art that the release and reconnection of underwater cables takes a long time and consumes a lot of manpower and material resources
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[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0030] The invention discloses a method for disconnecting and connecting an underwater cable on an offshore oil platform, including an underwater cable disconnecting method and / or a method for connecting an underwater cable. The method for disconnecting an underwater cable includes the following steps:
[0031]S101: Untie the connection between the upper end 6 of the underwater cable and the offshore oil platform. Specifically, untie the connection between the upper end 6 of the underwater cable and the power supply system of the offshore oil platform and remove the upper end of the underwater cable. The connection between the suspension flange (2d) above the head lug 2c and the suspension point of the offshore oil platf...
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The invention discloses an offshore oil platform underwater cable disconnecting and reconnecting method and equipment. The method includes an offshore oil platform underwater cable disconnecting method and / or an under water reconnecting method. The method is short in work period of disconnecting and reconnecting an underwater cable, and is simple in process operation, use of professional well drilling equipment and consumption of massive manpower and material resources are not needed. The underwater cable disconnecting and connecting equipment comprises a sealing device used for sealing an upper end of the underwater cable, lowering rigging and an underwater robot, the lowering rigging comprises a first rigging component connected with the upper end of the underwater cable, a second rigging component detachably connected with the first rigging component and a third rigging component connected with the first rigging component, and the underwater robot is used for disconnecting or connecting the first rigging component and the second rigging component. The method is simple and convenient to operate, operation can be performed without various professionals, and simple and quick underwater cable disconnecting and reconnecting can be realized.
Description
technical field [0001] The invention relates to the field of offshore oil platform construction, in particular to a method and equipment for disconnecting and connecting underwater cables of an offshore oil platform. Background technique [0002] In offshore crude oil extraction operations, the offshore oil platform is connected to the underwater production system through a riser system. The riser system includes underwater cables, wellhead hydraulic control cables, and underwater service risers. or other emergency situations, it is necessary to release and connect the pipelines such as underwater cables, wellhead hydraulic control cables, and underwater service risers. Although the methods of releasing and connecting these pipelines are slightly different, they are basically the same. Much the same, the following is an example of the release and return of underwater cables. [0003] Subsea cables are cables used by offshore oil platforms to transmit power to underwater Chr...
Claims
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IPC IPC(8): E21B41/00
Inventor 原庆东冒家友阳建军范志锋冯丽梅张宁
Owner CHINA NAT OFFSHORE OIL CORP