Reservoir Characteristics of Buried-hill Draping Zone in L Oilfield, Offshore China

The reservoir in different parts of buried-hill draping zone is often quite different, so it great significance to clarify the characteristics for exploration and development. Based on core, well logging, seismic data production data, oil layer Ⅱ lower second member Dongying Formation L oilfield, Bohai Bay Basin, offshore eastern China are systematically studied. Analyses facies, well-seismic combination, paleogeomorphology, sedimentary carried out. Sediment source supply, lake level buried hill basement geomorphology all contribute quality. research suggests that can be divided into four types. Reservoir thickness physical properties vary. area where provenance direction consistent with ancient valley a favorable location development high-quality reservoirs. Under guidance results, oilfield practices successful. Knowledge gained from study has application other similar fields.