Submarine Cable Retrieval Device for Seismic Exploration

Abstract

The invention discloses a seismic exploration submarine cable recycling and coiling device, which is applied to collecting underwater cables after seism in areas such as lakes, rivers and oceans in oil seismic exploration. The seismic exploration submarine cable recycling and coiling device is characterized by mainly comprising a bow crawler-type cable collecting machine and a hoisting cable coiling device, wherein the bow crawler-type cable collecting machine is fixed to the deck of the bow of a cable boat; the hoisting cable coiling device is longitudinally fixed to the center of a working area of the cable boat; a submarine cable is inserted into the bow crawler-type cable collecting machine through a cable guide slot and is posited on a rubber track and between a driven pinch roller and a driving pinch roller; and then the submarine cable is inserted between a driven suspend roller and a driving suspend roller of the hoisting cable coiling device. The invention has the advantages that the seismic exploration submarine cable recycling and coiling device can normally recycle cables under the six-grade oceanic condition; the cables are recycled by machines under the assistance of staff, and the maximum 50-meter depth mechanical cable recycling operation is realized; 40 to 50 percent of the conventional cable recycling operators are saved, and the labor intensity of the cable recycling operators is reduced to the greatest extent; and the cables are prevented from being damaged and the damage rate of the cables is reduced.

Description

technical field [0001] The invention relates to the technical field of petroleum seismic exploration, in particular to a device for collecting and coiling underwater cables after earthquakes are carried out in areas such as lakes, rivers and oceans. Background technique [0002] At present, in offshore geophysical exploration, the cable receiving machine currently used only has a cable recovery device, and there is no deck cable coiling device. Its structure is to install a shaft in a fixed frame, add a roller to the shaft, connect a hydraulic motor to one side of the shaft, and use the friction between the rotating drum and the cable and human dragging to lift the cable in the sea to the cable release position. on board. The existing cable take-up machine has a single function and cannot adapt to the ever-changing demand for cables, often resulting in low construction efficiency. Some disadvantages of the mainly used cable receiving equipment are: [0003] 1. In the cabl...

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Problems solved by technology

[0003] 1. In the process of cable retraction, it mainly depends on human dragging and mechanical assistance. Personnel are greatly affected by the environment, and wind, waves and low temperature affect work efficiency.

When the temperature is lower than 10 degrees, the working conditions of the operator deteriorate sharply, and the seawater and low temperature make the efficiency of cable winding and coiling work drop sharply

[0004] 2. The existing cable take-up machine is only suitable for carrying out cable take-up operations in waters where the water depth is not greater than 30 meters. Since the operation mode of mechanical assistance and manpower is adopted, the pulling force of manpower and the cable take-up machine is not enough when the water depth is greater than 30 meters. Recycled cables, unable to construct

[0005] 3. The radius design of the drum of the existing cable receiving machine and the recovery device is too small, and the protective layer of the light submarine cable has weak tensile strength. Weak, the use of existing cable receiving equipment will cause strong bending of the cable when the cable is lifted, causing a certain degree of damage to the cable

[0006] 4. During the cable receiving process, it is necessary to arrange additional staff to sort out the cables received on the ship. The cable receiving and laying the cables on the deck need to be carried out at the same time, and the workload is large, and the efficiency of using manpower to coil the cables is low.

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