井间地震资料拟露头技术研究与应用

Research and application of crosswell seismic data as pseudooutcrop

中国石油化工股份有限公司胜利油田分公司物探研究院,山东东营257022

Xia Jizhuang,Geophysical Research Institute,Shengli Oilfield Company,SINOPEC,Dongying 257022,China

储层原型模型的建立是储层建模中一项重要的基础工作,是油藏描述的重点和难点。在油田生产开发工作中往往没有直接的露头资料可供研究统计,而密井网解剖工作难度大、周期长,无法满足油田实际生产的需要。井间地震资料分辨率高,可以精细解释地下小尺度地质现象,因此，可以近似地代替实际研究区域的真实露头研究或密井网解剖模式的作用。综合分析了井间地震资料的地质分辨能力,结合F124和K71等实际区块的应用,阐述了井间地震资料作为“拟露头”在解决井间储层展布模式、构型分析以及为岩性和物性建模提供准确的地质统计关系参数等方面的技术优势,介绍了该项技术对提高储层非均质性表征精度和确定性以及直接指导油田生产所具有的积极意义。

Establishment of situmodel of reservoir is one important basis step in reservoir modeling,which is the key and difficult point of reservoir characterization.During the development of oilfield,we often cannot find direct outcrop for statistics,and the analysis of dense well pattern is difficult with long period,which cannot satisfy the requirement of actual development.Crosswell seismic has high resolution,which can fine interpret smallscale subsurface geologic bodies,and approximately replaces research of actual outcrop or analysis of dense well pattern.By comprehensively analyzing the geologic identification capability of crosswell seismic data,combining with the application in F124 and K71,we characterized the technical advantages of crosswell seismic data regarding as “pseudooutcrop” in solve crosswell reservoir distribution style,configuration analysis and providing accurate geologic statistic parameters for the modeling of lithology and physical properties,which is meaningful for improving the accuracy of characterizing reservoir heterogeneity and guiding the production of oilfield.