【摘要】 根据大量岩心薄片,铸体、物性等分析资料,从储集层岩石学、物性、孔隙结构。储层发育以及展布规律等方面,对四川盆地川中-川南过渡带中三叠统雷口坡组雷一1亚段储集层特征进行了研究。研究区内储层主要发育白云岩,硬石膏质白云岩,少量灰质白云岩。储集空间除白云石的晶间孔以外,主要以溶孔为主,物性较差,属低孔、低渗孔隙性储集层。雷一1亚段储集层白云岩均成夹层,产生于硬石膏岩层,或硬石膏岩、盐岩之中,形成“盐下孔隙性白云岩储集层”。更多还原

【Abstract】 Integrating with the petroleum exploratory progress of the leikoupo-11 submember in the transition zone of Sichuan basin,this paper highlights the petrology,petrophysical properties,pore structure and the reservoir developed and outspread law based on the core thin—section and cast thin—section analysis data,etc.The result shows that the lithology in this area is mostly dolomite,anhydrite dolomite and a few lime dolomites.The main reservoir space is dissolved pore besides the dolomite intercrystalline pore.The reservoir of the petrophysical properties is poor,belonging to low porosity and low permeability reservoir it developed in the anhydrite or salt rock,and formed eventually the pore dolomite reservoir under the salt in leikoupo-11 submember.更多还原