Structural transfer zones and their hydrocarbon significances in Bohai Bay area
Yu Yixin Zhou Xinhuai Wei Gang Tang Liangjie Xu Changgui
1 State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum（Beijing）, Beijing 102249
2 Basin and Reservoir Research Center, Faculty of Natural Resource & Information Technology , China University of Petroleum（Beijing）, Beijing 102249
3 China National Offshore Oilfield Corporation Limited-Tianjin, Tanggu 300452, Tianjin
Abstract Based on the interpretation results of seismic data and structural maps, the structural transfer zones and their significances hydrocarbon in the Bohai Bay area is discussed. The structural transfer zones are divided into regional transverse accommodation zones and local transfer zones. The former is the large-scaled NW-striking faults, where intense earthquake activities exist, and which divided the offshore area of the Bohai Bay Basin into the northern, the central and the southern segments. The local transfer zones are located in the overstepping area wherein which normal faults interact each other. According to the dips and assemblage characteristics of the normal faults, three types of local transfer zones have been classified in the Bohai Bay area, including the relay ramps, oblique anticlines and horsts. The hydrocarbon significance of the structural transfer zones involves their controlling influence in the traps formation, in the high quality reservoir development and in hydrocarbon migration.
