【摘要】 运用地震地层学和地震沉积学原理,分析研究区二叠系长兴组沉积相,总结出应用地震资料分析碳酸盐岩沉积相方法,即用地震拉平体的古地貌(地震拉平体的地层切片)分析确定沉积相带边界和分布范围;参照古地貌相带边界和分布范围,结合正演模型和地质体的地震反射特征,通过地震相分析和地震相向沉积相转化,精细刻画沉积相平面展布特征。首次应用该方法完成了研究区二叠系长兴组各时期沉积相平面展布刻画。更多还原

【Abstract】 Based on the principle of seismic stratigraphy and seismic sedimentology,and by the analysis of the sedimentary facies of Permian Changxin Formation in study area,the method of analyzing carbonate sedimentary facies based on seismic data is generalized.The boundary and distribution area of sedimentary facies can be determined from the palaeogeomorphic map of seismic flattening cube(strata slice of seismic flattening cube).With the reference to the boundary and distribution area of sedimentary facies getting from the palaeogeomorphic map,integrating with the forward solution and seismic reflection characteristic of geologic body,accurate plan sedimentary facies characteristic can be got from the analysis of seismic facies and the transformation to sedimentary facies.Application of the abovementioned method firstly,the plan characteristic of the sedimentary facies of Permian Changxin Formation in study area can be got for different deposition periods,which provides the foundation to seismic reservoir prediction.更多还原