深海油气勘探中的海底地形勘测技术

Seabed Topographic Survey Technology in Deep-sea Oil and Gas Exploration

在简述船载多波束测深系统、三维地震、AUV搭载的多波束系统测量深水水深原理的基础上,利用实测数据,从勘测结果的分辨率、精度以及勘测成本方面比较了这三种深海油气海底地形勘测方式,并根据比较结果给出了在深海油气勘探的不同阶段海底地形勘探的方式。总体和初步勘探阶段可以使用效率和精度都较高的船载多波束和地震勘探,在大比例尺详查阶段,使用AUV搭载的多波束系统。这样,既能发挥各自的长处,又能使深海油气勘探经济有效的实施。

Based on a brief description of the principles of deep water bathymetries by the shipborne multibeam system,3D seismic exploration,multibeam system on board AUV,as well as the observed data,the three methods for deep-sea seabed topographic surveying are compared from the aspects of resolution,accuracy and cost. According to the comparative results,the seabed topographic survey methods are given in the different stages of the Deep-sea Oil and Gas Exploration： In the general and preliminary exploration stage,the shipborne multibeam and seismic exploration can be used; In the large scale investigation stage,multibeam system on board AUV can be used. The advantages of the above mentioned systems can make the deep-sea oil and gas exploration economical and effective.