Hydrocarbon Accumulation Condition and Model of Lithologic Reservoir in Northern Beidagang Buried Hill Structural Zone
渤海湾盆地北大港潜山构造带北翼岩性油气藏成藏条件与成藏模式

After more than 40 years of exploration and development in Dagang oilfield,the main structure has been explored fundamentally and exploration difficulty is increasing by degrees.The extensive slope zones between the sags and the uplifts,which were not attention-getting previously,will become an important research field in future.Taking example for Es3 of the slope zones,on the basis of synthetical analysis of hydrocarbon reservoir accumulation in Es3 ,we establish lithologic hydrocarbon reservoir accumulation model of “sag-fault-break-uplift” in deep zone of this area by means of palaeogeomorphic recovering research and beneficial sand body predication.The model has been validated by exploration drilling,and shows good exploration potential in northern Beidagang buried hill structural zone.