Bearing body structure of ocean electromagnetic node acquisition station

Abstract

The invention discloses a bearing body structure of an ocean electromagnetic node acquisition station. The bearing body structure comprises a degradable and non-magnetic bearing body, wherein the bearing body is formed by pouring degradable cement; and a plurality of flow guide holes are formed in the bearing body in a penetrating mode in the longitudinal direction. The bearing body structure is made of a degradable and non-magnetic material, so that the influence of exploration on the ocean environment is reduced to the maximum extent, and the influence of the magnetic material on the electromagnetic signal acquisition of the acquisition station is avoided; and due to the design of the flow guide holes, the influence of seawater resistance and ocean current on the acquisition station in the sinking process of the acquisition station can be effectively reduced, and the putting precision of the acquisition station is greatly improved.

Description

technical field [0001] The invention relates to the technical field of marine geophysical prospecting electromagnetic methods, in particular to a load-bearing structure of a marine electromagnetic node collection station. Background technique [0002] Marine electromagnetic prospecting has become an important means of offshore oil and gas exploration. At present, there are three types of marine electromagnetic prospecting systems: streamer type, submarine armored cable type and submarine node type, among which submarine node type electromagnetic prospecting is the most commonly used exploration method. The most important part of the system is the marine electromagnetic node collection station, which is composed of the main body of the collection station and the load-bearing body. When working, the main body of the collection station and the load-bearing body are connected as a whole. The collection station is put into the seawater from the deck of the ship and sinks into th...

AI Technical Summary

Problems solved by technology

In order to increase the impact resistance of the load-bearing body, the method of adding steel bars to the cement material is usually used as the load-bearing body reinforcement. The disadvantage of this method is that the steel bars are magnetic, which interferes with the electromagnetic signals collected by the collection station. On the other hand, the load-bearing body released After reaching the seabed, the steel bars cannot be degraded, which will have a certain impact on the marine environment

At the same time, due to the large surface area of ​​the load-bearing body and being a whole, the collection station will encounter great resistance during the sinking process

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