RESERVOIR AND CONTROLLING FACTORS OF THE SECONDARY MEMBER OF THE JIALING RIVER FORMATION IN THE HIT AND THE SOUTH TRANSITION STRIP OF SICHUAN
川中―川南过渡带嘉二段储集性及储层控制因素研究

The Jia-2 member is the best developed segment in the Jialing River formation of resourceful region. The Jia-2 member develops the enclosed sands, platform, restricted lagoon, half-restricted lagoon and open subtidal sedimentary subfacies mostly. The different porosity show that the enclosed sands subfacies and the platform's dolomite flat microfacies in the native Jialing River formation is the best reservoir facies belt. But because of the alteration caused by the diagenesis in anaphase, the different reservoir facies belt can transform together. Therefore this segment's reservoir is mainly controlled by the tape of the sedimentary facies, the effect of syngenetic solution, the embedding solution and the structure burst and so on. According to this area's condition, the Jia-2's reservoir was divided to good, better, ecumenical and non-reservoir four types.