【摘要】 四川盆地北部阆中—南部(地名)地区处于川北坳陷与川中隆起的斜坡部位,具有优越的油气成藏条件。下二叠统茅口组沉积时处于台地边缘相带,东吴运动使其顶部长时间暴露地表。这种沉积环境不仅在沉积期有利于礁滩相岩溶改造型储层的发育,而且在成岩期也有利于建设性成岩作用的发生,同时还有利于裂缝的发育,因而对茅口组礁滩相储层进行预测对本区油气勘探具有重要的意义。参考川东北普光地区上二叠统长兴组储层的地震响应特征,结合本区茅口组储层特征,对研究区储层地震响应的特征进行了分析,并指出了茅口组有利的储层发育带:位于工区西南部呈NW-SE条带状展布的礁滩相储层。更多还原

【Abstract】 The sedimentary reservoirs in the Lower Permian Maokou formation,Nanbu area of Langzhong in North Sichuan basin,are situated in the platform edge marginal area,with its top surface exposed for a long time due to the Dongwu Movement.The environment here is advantageous not only for the development of converted karst(reef flat facies) reservoirs in the sedimentary period but for the diagenesis in this crucial period and for the formation of faults.Referring to seismic response performance in the Upper Permian Changxing formation,the Puguang area of East Sichuan basin,this paper analyzed that in the study area of the Makou formation and pointed out that the favorable reef flat facies reservoirs are distributed in the NW-SE belt of the southwestern exploration zone.更多还原