地层切片技术在沉积相研究中的应用探讨  

Strata slices in sedimentary facies research

作　　者：陈文浩[1,2] 王志章[1,2] 侯加根[1,2] 魏超[3] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]延长石油股份有限公司,陕西延安716000

出　　处：《石油地球物理勘探》2015年第5期1007-1015,808,共9页Oil Geophysical Prospecting

摘　　要：通过分析地层切片技术的使用原则和适用条件,探讨地层切片技术在沉积相研究中的适用性和使用方法。以陆丰13-1油田恩平组上段为例,依据高分辨率层序地层学理论,以分频解释为基础建立等时地层格架,在最小等时单元内应用地层切片提取多种属性进行沉积相展布研究,提出了合理利用地层切片预测岩性的思路。研究表明:在分频地震数据体上寻找不随频率变化的低级序等时地层界面,能较好地确定地层切片研究的最小等时单元,保证切片等时标准面的地球物理与沉积的等时性,为井控地层切片属性研究奠定了基础;地震波阻抗反演数据体可以作为地层切片识别岩性的输入数据体;在钻井分层控制下,以等比例地层切片方式提取地层属性,这样的地层切片更具等时性和地质意义。This article analysis the using principles and application conditions of strata slice technique,discuss the applicability and usage of strata slice technique.We set Lufeng 13-1oil field as an example,based on theory of high resolution sequence stratigraphy,with the spectral decomposition technique, high resolution isochronal stratigraphic framework was built.In order to discuss the reasonable approach to predict reservoir lithology using strata slice,we collect various seismic attributes to analyze the distribution and evolution of sedimentary facies in minimum isochronous research unit with strata slice technique.The research shows that:we looked for lower-order isochronous stratigraphic interfaces maintained invariable in frequency-division seismic data,which can be properly determined minimum isochronous research unit of strata slice,and ensure standard interface items of strata slice has geophysical and depositional isochronous,lays the foundation for well-controlled seismic attributes of strata slice;Impedance inversion can be used as input data to identify lithology with strata slice.We use scale strata slice to extract seismic attributes with control of drilling layer,in order to make the strataslice more isochronous and explicit geological significance.

关 键 词：地层切片 分频解释技术 地震多属性分析 沉积相研究 

分 类 号：P631[天文地球—地质矿产勘探]