鄂西地区页岩气勘探地震采集主要参数分析

鄂西地区是寻找页岩气的有利区带。针对该区页岩气勘探多套目的层埋深不一、地表激发岩性多变及地下构造相对复杂等特点，以满足不同目的层兼探和实现经济勘探为目标，通过正演模拟研究，结合近几年在该区所获的实际地震资料，对在该区进行页岩气勘探的地震采集主要参数——最大炮检距、覆盖次数、激发因素等进行分析，提出了最大炮检距及覆盖次数的选取范围；通过系统试验，分析确定了各种出露地层中的地震激发参数。

The western Hubei Province is the potential zone for shale gas exploration,which is characterized by different buried depth of muti-layer targets,variable surface lithology and complex subsurface structures,etc.In order to achieve simultaneous prospecting of multi-layer targets and effective economic exploration in this region,by forward modeling,combining with the actual seismic data,we analyzed the main seismic acquisition parameters including maximum offset,fold and shooting factors,and proposed the valuable range of maximum offset and fold.By systematic testing,the shooting parameters of all outcropped formations were identified.