A combined submarine seismic acquisition node and its application method

Abstract

The invention discloses a group ocean bottom seismometer (GOBS) and a use method thereof. The group ocean bottom seismometer is an ocean bottom seismometer provided with a mooring cable type metal shell. The external structure of the group ocean bottom seismometer includes a pressure resistant cabin, an upper flange and a lower flange and a tether steel cable. A titanium alloy shell is adopted as the cabin of the group ocean bottom seismometer; an end surface O-shaped ring sealing mode is adopted to seal the cabin; a digital collector, a full-angle detector, a network communication module, a GPS, an electronic compass and a combined power source are arranged in the cabin; and a spread spectrum circuit is additionally arranged on the full-angle detector, so that a sensor can be designed. The group ocean bottom seismometer (GOBS) and the use method thereof invention are applied to high-density shallow seabed seismic observation and oil and gas exploration and the development of combined ocean bottom seismic detection equipment. With the group ocean bottom seismometer (GOBS) and the use method thereof adopted, the delivery and recovery technologies and data collection of corresponding instruments can be realized, and new technical means can be provided for deepwater oil and gas exploration in China.

Description

technical field [0001] The invention relates to the field of marine exploration, specifically to the technical field of marine seismic observation and underwater acoustic propagation technology, and in particular to a combined submarine seismic acquisition node and a method for using the same. Background technique [0002] The ocean is rich in mineral resources, not only rich in solid mineral resources such as oceanic manganese nodules and hydrothermal sulfide deposits, but also rich in oil and natural gas. Therefore, offshore oil and gas resources have become the focus of international energy competition. Among a series of core problems faced by marine resource exploration technology, how to improve detection accuracy and reduce ambiguity is the most important, which is the basis for improving drilling success rate and reducing exploration risk. Therefore, vigorously developing marine high-tech exploration technology and geophysical exploration combined seabed seismic acqu...

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