Research On Tension Analysis Of The Ocean Bottom Node And Optimal Design Of Laying Method

With the continuous improvement of industrial technology,the equipment for seismic exploration is also constantly improving.Ocean bottom node acquisition equipment is the seismic data acquisition equipment in marine seismic exploration,which is becoming popular all over the world at present.The basic function of the ocean bottom node acquisition device is equivalent to the geophone of land exploration,but the overall function is more powerful.Marine seismic exploration differs from terrestrial seismic exploration,it is affected by the complex and changeable ocean climate and seabed currents.The premise for application of ocean bottom node is to have a set of equipment and technologies for laying and recycling the ocean bottom node.The ocean bottom node has no valueif it cannot be laid on the seafloor and recycled.Due to the different laying methods of the ocean bottom node,the laying accuracy and construction efficiency of ocean bottom node are greatly different.At present,the precision of ocean bottom node laying is a difficult task in actual marine construction,and the efficiency of laying and recycling is the bottleneck in the whole construction.How to lay the ocean bottom node with high quality and high efficiency has become an important issue in the application of ocean bottom node.This paper starts with the commonly used ocean bottom node and laying methods in the world,analyzing the efficiency and precision of different laying methods of the node,and summarizing the advantages and disadvantages of different laying methods.The mechanical analysis of ocean bottom node with free-falling and tension laying in the ocean is carried out,and the advantages and disadvantages of the two laying methods are compared.In this paper,an optimal laying method for ocean bottom node with position precision control and laying efficiency is proposed,and a matching laying and recycling equipment are designed for this laying method.The working process is refined.It provides some reference for the better application of ocean bottom node in construction.