川东北地区飞仙关组鲕滩气藏是西南油气田分公司近年的勘探重点之一 ,在该区近 5 0 0 0km2 的范围内 ,已钻有多口预探井或评价井。尽管上述井的部署 ,特别是单个圈闭的第一口预探井 ,主要依据地震“亮点”(飞仙关组内部的强反射同相轴 )预测成果 ,但由于各过井地震剖面内飞仙关 The Feixianguan Formation oolitic beach gas reservoir in northeastern Sichuan is one of the exploration priorities of the Southwest Oil and Gas Field Branch in recent years. There are many pre-exploration wells or appraisal wells drilled in the range of nearly 5 000 km 2 in this area. Although the deployment of the above wells, especially the first pre-exploration well of a single trap, is mainly based on the prediction of the “bright spot” of the earthquake (the strong reflection event within the Feixianguan Formation), the Feixianguan