Abstract：Through pre-stack depth migration data and combing study of drill data with study of regional stress field,the paper pointed out that undergoing transformation of local stress field from Indo-Chinese stag(NW)into Yanshan stage(NEE)and regional depression in Ximalaya stage,CB30 buried hill formed reversal structure in Paleozoic,leading to extreme development of reversed fault and fracture in buried hill inside and a lot of losses of Paleozoic;analyzing combination relation of reservoir and cap formation according to formation development,the paper pointed out that there exist multiple set of combination of reservoir and cap formation in buried hill,so constituting a good trap for oil-gas because of extreme development of fracture;also pointed out that pore-style weathered crust reservoirs mainly formed in Mesozoic and lump-shaped reservoir,mainly being structural fracture and dissolution cave,are formed in Paleozoic based on structural amplitude,formation lithology,development degree of faults and cap formation data;finally considered that CB30 buried hill reservoir belongs to typical light condensate reservoir and Zhuangdong Depression is main oil-gas source according to geochemical analysis.
谭明友, 刘福贵, 董臣强, 冯德永, 张桂霞. 埕北30潜山构造演化与油气富集规律研究[J]. 石油地球物理勘探, 2002, 37(2): 134-137,148.
Tan Mingyou, Liu Fugui, Dong Chenqiang, Feng Deyong, Zhang Guixia. Study for evolution of CB30 buried hill structure and role of oil-gas accumulation. OGP, 2002, 37(2): 134-137,148.
