Solid towed receiving device for marine seismic survey

Abstract

The invention belongs to the field of geophysical exploration, and relates to a solid towed marine seismic survey receiving device, which comprises a towing rope acoustic part and two towing rope connectors connected to the two sides of the towing rope acoustic part respectively. The towing rope acoustic part of the towed marine seismic survey receiving device comprises a power conductor, a signal conductor, a hydrophone and an outer sheath, wherein the power conductor is positioned on a central part; a first polyethylene protective layer, Kevlar ropes and a second polyethylene protective layer are sequentially arranged outside the power conductor from inside to outside; the signal conductor is wound outside the second polyethylene protective layer; a third polyethylene protective layer is arranged outside the signal conductor; a rigid foam layer is arranged on the third polyethylene protective layer; the hydrophone is positioned in a slim tube of which two ends are sealed; a conductor is led out from one end of the slim tube, and is connected to the signal conductor; a helical groove is reserved on the rigid foam layer; the slim tube is wound on the rigid foam layer along the groove; and the outer sheath is arranged outside the rigid foam layer and the slim tube. The device has the advantages of no pollution, high environment adaptability and reliability in use, and is easy to maintain.

Description

technical field [0001] The invention belongs to the field of geophysical prospecting, in particular to a solid drag type marine seismic prospecting receiving device. technical background [0002] The towed marine seismic exploration receiving device is mainly used to receive the acoustic wave reflection signals from different strata of the ocean during marine seismic exploration through the hydrophone in the tow cable. The hydrophone in the cable converts the received acoustic signal into an electrical signal, and then transmits the electrical signal to the recording instrument through the signal wire, and the recording instrument receives, stores and analyzes the electrical signal from the hydrophone, and then learns about the ocean and Information on seabed formations. [0003] At present, there are two structures of conventional towed marine seismic survey receiving devices: [0004] 1. The liquid tow cable is composed of wire, hydrophone, cable bracket, Kevlar rope, to...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and to provide a towed marine seismic survey receiving device that can avoid the problem that the traditional tow cable is easy to pollute the working sea area, can continue to work when the sea conditions are relatively bad, and has low maintenance costs.

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