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Submarine cable positioning method and device

A submarine cable and positioning method technology, which is applied in the direction of measuring devices, radio wave measuring systems, and the use of re-radiation, can solve the problems of complex installation, high construction costs of equipment and personnel, and many positioning auxiliary equipment, so as to improve construction efficiency, The effect of saving manual inspection time and reducing failures in cable laying operations

Inactive Publication Date: 2016-05-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many positioning auxiliary equipment in submarine cable construction, the installation is complicated, and the construction cost of equipment and personnel is high.

Method used

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  • Submarine cable positioning method and device
  • Submarine cable positioning method and device
  • Submarine cable positioning method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] When configuring the cable, record the corresponding relationship between the acoustic transponder and the geophone and the address information of the transponder (as shown in Table 1). Edit the corresponding relationship file ASSET file as shown in Table 2, import it into the main navigation system, and the corresponding cable laying file Aslaid matches. When the cable laying is completed, the cable primary positioning file (namely the cable laying file) generated by the cable laying ship. The file contains the coordinates of the geophone's falling point after the cable enters the water, and the corresponding water depth data.

[0083] Table 1

[0084]

[0085] Table 2

[0086]

[0087] Aslaid files are displayed in the navigation system, such as file name, front painting name, cable-laying ship, cable-laying sequence number, geophone range, cable-laying start time, cable-laying end time, geophone stake number (arrangement point number), etc. Water depth, posi...

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Abstract

The present invention provides a submarine cable positioning method and device, relating to the field of submarine cable operation. The invention aims to reduce submarine cable operation faults and improve construction efficiency. The method comprises a step of generating a corresponding relation between an acoustic transponder and a detector, a step of controlling a detection water entry point position through a time control signal, and a step of obtaining a detection seabed position through the acoustic positioning of the detector. According to the method, a lot of manpower and material costs is saved, the submarine cable operation faults are reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of submarine cable operations, in particular to a method and device for locating a submarine cable (OBC, Oceanbottomcable). Background technique [0002] The submarine cable operation adopts the mechanical cable laying method to lay the cable together with the geophone to the seabed, and the position of the geophone leaving the cable-laying ship is recorded by the navigation system as a positioning result. During the process of reaching the seabed, the geophone will be affected by currents, tides, etc. and deviate from the design position. Acoustic secondary positioning and primary arrival secondary positioning require the entire cable to be laid before positioning can be performed, and first arrival positioning requires instruments to record seismic data, which is relatively cumbersome. [0003] Before laying the cable, it is necessary to set the address of the radio head of the transponder, such as figure 1 RFID (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/14
CPCG01S11/14
Inventor 梁兵
Owner CHINA NAT OFFSHORE OIL CORP
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