【摘要】 通过对川北阆中-南部地区大安寨段储层特征、储层形成的主控因素分析,认为有利的沉积微相是大安寨段储层形成的基础,建设性成岩作用形成的孔、洞、缝是储层形成的关键,即介屑滩提供优越的储渗岩相基础,再叠加成岩破裂、构造破裂以及多期次的重结晶、溶蚀作用,形成孔洞缝储层,该储层在地震资料上表现为强反射响应特征,再结合三维地震资料对裂缝进行预测,从而预测出大安寨段有效储层发育带(油气富集带)。更多还原

【Abstract】 Through reservoir characteristics analysis and controlling factor analysis of reservoir forming of Da’anzhai section in Langzhong-south area of north Sichuan,favorable sedimentary microfacies are considered to be the basis of reservoirs.The pores,fractures and caves formed by constructive diagenesis are considered to be the key reservoir forming factor,which is to say,the bio-fragmental beaches provide favorable permeable reservoirs.Through superposition of diagenesis fracturing and structural fracturing and multi-phases recrystallization and dissolution,the pore-fracture-cave developed reservoirs are formed.Strong reflection response characteristics have been displayed on seismic data. In combination with seismic data,the research on predicted hydrocarbon enrichment zone of Da’anzhai section in Langzhong-south area of north Sichuan has been carried out,which can provide guidance for next exploration and development.更多还原