Prediction of Favorable Reservoir in Qixia Formation of Lower Permian in Huangqiao Area, Lower Yangzi Basin

The Huangqiao area is a selected area with relatively active oil and gas exploration in the lower Yangtze Basin. The research work mainly focused on structural traps in the early stage. It was successful in some sense, but the findings were not on the scale as expected.With the breakthrough of exploration in carbonate deposits, the facies of organic bank became an important target for oil and gas hunting.The Huangqiao area has been proved by drilling data a place with well developed organic banks.Based on regional geological data, studies were contributed to the spatial distribution of organic banks. Integrated approaches, such as sedimentary facies, logging, and seismic attributes are adopted. In this paper, together with the study of karst geology, we presented the distribution pattern of organic banks as favorable reservoirs of the Qixia Formation in the Huangqiao area.