Design and research of seismic acquisition scheme for development in Wangji area of Biyang sag

Wangji area of Biyang sag, with developed complex fault block and fault lithologic reservoir, has entered the later period of exploration and development. The low-grade sequence fault section of existing seismic data on the upper 3 rd member of Hetaoyuan formation is not clear; it can't meet the demand of oil and gas exploration and development. In the development of seismic acquisition scheme design, the tectonic characteristics of Wangji area and the previous seismic acquisition factors should be fully considered. Through application of wave equation based on the need of pre-stack imaging, the bin attributes of the observation system are compared and analyzed. And then the seismic acquisition design of small bin, high coverage and wide azimuth has been determined. According to the construction of the seismic design scheme, the wave field information of seismic data collected are abundant, and the signal-to-noise ratio and seismic profile resolution are obviously improved, which improves the identification ability of small faults, small fault-blocks, microamplitude structures and fault-lithology reservoirs, and confirms multiple oil-bearing traps.