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Cable laying precision control method and device

A precision control and cable laying technology, applied in the direction of cable laying equipment, etc., can solve the problems that the cable precision cannot be controlled within a reasonable range, the sea conditions are complicated, and the construction cannot be carried out, etc., and it is easy to promote and implement, improve the operation accuracy, and structural composition reasonable effect

Active Publication Date: 2015-01-07
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

[0003] However, as the water depth increases, the sea conditions in the deep sea (the sea area with a depth of more than 100m) become more and more complicated. There are many factors such as multilayer flow, undercurrent, ocean current, and irregular flow in many sea areas. The traditional predictive free-fall laying method It is increasingly impossible to control the accuracy of the cable within a reasonable range, so that the construction cannot be carried out

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  • Cable laying precision control method and device
  • Cable laying precision control method and device
  • Cable laying precision control method and device

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0038] combine figure 1 , figure 2 As shown, the present invention provides a cable laying accuracy control device, including a cable system and a winch system, the winch system is used to realize the common sea-dropping operation of the cable system; the cable system includes a cable body 9 and a positioning rope, and the end of the positioning rope A gravity anchor 7 is connected, and the positioning rope includes a traction rope 8 and a connecting rope 10 connected in sequence. They are connected by a connecting piece, and the connection position of the connecting piece...

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Abstract

The invention discloses a cable laying precision control method and device. The method includes the steps that a, when the stern is located over the target coordinate points, at the sea bottom, of a positioning anchor, a gravity anchor connected to the front end of a traction rope inside a positioning rope is thrown into the sea bottom, wherein the length of the traction rope is determined according to the suspension length, in the sea water, of a submarine cable with wave detectors. The device comprises a mooring rope system and a winch system, wherein the winch system is used for throwing the mooring system into the sea together. The cable laying precision control method and device can be applied to the technical field of submarine cable seismic exploration operation, by the utilization of the cable laying precision control method and device, the defects in the prior art can be effectively overcome, influences of multi-lamination currents, undercurrents, ocean currents and irregular currents inside a deep ocean region can be effectively avoided, and the technical effect of precision control over deep ocean operation is achieved.

Description

technical field [0001] The invention relates to the technical field of submarine cable seismic exploration operations, in particular to a cable laying precision control method and device. Background technique [0002] At present, in the construction process of submarine cable seismic exploration, the accuracy of cable laying is a prerequisite for the operation. Usually, the accuracy of the cable is required to be DC12.5m in the horizontal direction and DA12.5m in the vertical direction. At present, the accuracy control of cables in submarine cable construction at home and abroad adopts pre-judgment means to lay cables in free fall, and artificially adjusts the DC and advance amount DA of the ship's travel path to compensate for the influence of tides and ocean currents, so as to control the accuracy of the cables. within reason. The current submarine cables are mainly used in shallow sea areas (sea areas with a depth of 50m), and artificial adjustment methods in the above s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/10
Inventor 罗东陈华张振波刘东杨爱兵李金生王刘博张伟姚满满李海宽
Owner CHINA NAT OFFSHORE OIL CORP
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