【摘要】 贵州大方地区地表出露不同地质年代的灰岩,地表起伏剧烈,为典型的喀斯特地貌。页岩层埋藏深度变化大,地下构造复杂,上覆碳酸盐岩地层对其下的地震信息屏蔽作用也影响了成像效果。随着页岩气开发的需求,页岩气勘探工作必将大范围开展,而页岩气地震勘探采集方法与常规勘探方法有所不同,为探索更适合于页岩气的采集方法,结合大方页岩气勘探试验,从多方面进行分析,确定出适合于该区的页岩气采集方法。更多还原

【Abstract】 Dafang area of Guizhou is the typical karst physiognomy with limestones of different geology period existing in surface and dramatically uneven terrain.Depth of shale layer storage varies greatly and subsurface stnicture is complicated.The overlying carbonalite stratas shield the seismic signals below and affect imaging accuracy.Willi the demand of shale gas development,shale gas exploration work will be carried out with larger scale.However,shale gas seismic prospecting acquisition method differentiates conventional prospecting acquisition method,and in order to find the acquisition method more suitable for shale gas.based on the experience accumulated in shale gas exploration tests in Dafang,this paper made analysis from many aspects and determined the acquisition method suitable for the shale gas in this region.更多还原