Laying and recovery device and method for geophysical survey vessel seismic cable with A-shaped frame

Abstract

The invention relates to the field of comprehensive geophysical survey vessel seismic survey operations, in particular to a laying and recovery device and a method for a geophysical survey vessel seismic cable with an A-shaped frame. The device comprises a cable hanging point bearing mechanism, a mobile gangway bridge mechanism and a movable wind and rain shielding mechanism, wherein the cable hanging point bearing mechanism and movable wind and rain shielding mechanism are arranged on an exposed deck, the mobile gangway bridge mechanism is arranged on a seismic cable deck, and the cable hanging point bearing mechanism and the movable wind and rain shielding mechanism are located above the mobile gangway bridge mechanism. According to the invention, the problem of interference between seismic cable laying and recovery and the A-shaped frame is solved, so that the geophysical survey vessel loaded with a large A-shaped frame is capable of laying and recovering the seismic cable in the middle of a stern, and the foundation for the geophysical survey vessel to realize the two functions of seismic survey and geological sampling survey is laid.

Description

technical field [0001] The invention relates to the field of seismic survey operations of a comprehensive geophysical exploration ship, in particular to a device and method for laying and recovering seismic cables of a geophysical exploration ship with an A-frame. Background technique [0002] The geophysical exploration ship ("geophysical exploration ship" for short) is a survey ship mainly for geophysical surveys. Multi-channel seismic surveys are commonly used in geophysical surveys. Seismic waves are emitted to the seabed through seismic sources (mainly air guns) The receiver (seismic cable) can receive signals, which can be used for the study of seabed geological structure and the exploration of seabed oil and gas resources. Submarine geological sampling survey is a survey method for studying the shallow surface geology of the seabed, often using large A-frame systems and various geological sampling equipment as the main means. [0003] The multi-channel seismic survey...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and proposes a seismic cable laying and recovery device and method for a geophysical survey ship with an A-frame, which solves the problem of interference between seismic cable laying and recovery and the A-frame, so that The geophysical survey ship loaded with a large A-frame has the ability to lay and recover seismic cables in the middle of the stern, laying the foundation for the geophysical survey ship to realize the two functions of seismic survey and geological sampling survey

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