Study of 3D seismic acquisition in Y area of Xihu Sag in the East China Sea Basin
The Y area of Xihu depression in the East China Sea is located at the eastern edge of the depression,crossing the Baidi deep depression and Dongping fault terrace zone,and the geological conditions are complex.In combination with the reser-voir development characteristics of the slope zone and central anticline zone of Xihu Sag,where oil and gas have been found,it is considered that the primary target strata in Y area are the Oligocene Huagang Formation and Eocene Pinghu Formation,which are mainly sedimentary rocks with sandstone and mudstone lithology.In addition,volcanic rocks are also developed.The burial depth of the main target layer in Huagang Formation is between 2 500-5 000 M.There are some problems in the Y area,such as signal-to-noise ratio of 2D seismic data,insufficient resolution of the target layer,unclear basement imaging,etc.In order to im-plement trap and rock mass description and improve the quality of 3D seismic data,a 3D seismic acquisition design demonstra-tion in the Y area is carried out.It provides technical support for 3D seismic acquisition.
国家科技期刊平台
NSTL
万方数据
