Application of Reservoir Seismic Inversion at Damintun Sag in Liaohe Oilfield

According to the special geological conditions at Damintun sag in Liaohe basin, such as complex structures and rapid lateral change of thin and interbedded reservoirs, the technique of logging constrained seismic inversion based on pre-stack high-resolution seismic data was used to describe oil-gas reservoirs. In combination with lithologic interpretation, reservoir seismic inversion can effectively identify underground complex geologic structures and seismic anomalous reflection volume and quantitatively predict the distribution of sandstones in space and the law of their variation. The paper studies the method for reservoir prediction by using logging-restrained inversion technique based on the restriction of geological conditions and log to find out the rule of reservoir distribution in this region and fix prospective lithologic traps. And we have obtained satisfactory results in the exploration and development of the oilfield.