地震多属性分析在混积环境砂体识别中的应用——以桑塔木南地区石炭系Ⅳ砂组油为例  

Application of seismic multi-attribute analysis in sand body identification of mixed sedimentation environment:A case study of Carboniferous sand group Ⅳ in the south of Sangtamu area

作　　者：徐浩[1] 贾晓静[2] 张云峰[3,4] XU Hao;JIA Xiaojing;ZHANG Yunfeng(Petroleum Exploration and Production Research Institute,SINOPEC Northwest Oilfield Company,Urumqi 830011,China;Petroleum Exploration and Production Research Institute,SINOPEC Sorthwest Oilfield Company,Chengdu 610041,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;Southwest Petroleum University Division of Key Laboratory of Carbonate Reservoirs,SNPC,Chengdu 610500,China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司勘探开发研究院,新疆乌鲁木齐830011 [2]中国石化西南油气分公司勘探开发研究院,四川成都610041 [3]西南石油大学地球科学与技术学院,四川成都610500 [4]中国石油天然气集团有限公司碳酸盐岩储层重点实验室西南石油大学研究分室,四川成都610500

出　　处：《煤田地质与勘探》2018年第6期163-168,共6页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2012CB214800);国家科技重大专项课题(2011ZX05005-004);国家自然科学基金项目(41702122)~~

摘　　要：地震多属性分析是储层预测的重要手段之一。以塔河油田桑塔木南地区石炭系Ⅳ砂组油为例,在单井沉积相分析的基础上,优选振幅属性信息,进行AVF分频反演,建立振幅属性与砂体之间的耦合关系及砂体识别模式,刻画沉积相平面分布。将地震反射结构类型细分为4种类型;以Ⅳ砂组油层顶面为基准,上下浮动10ms进行平均波峰振幅属性提取,对灰质含量重的西南地区进行AVF分频反演;振幅属性与砂体之间总体存在正相关关系,砂含量越高,振幅值越大。水下分流河道主要分布在S1072井区及研究区西北缘;砂坪主要分布在AT10及S111井区,呈片状展布;潮砂脊主要分布在南部,可作为研究区岩性圈闭的重点目标区。Aiming at the actual situation that the amplitude may be distorted in a mixed sedimentation environment,by using the example of CarboniferousⅣsand group in the south of Sangtamu area,based on the analysis of the single well sedimentary facies,we select the useful amplitude information in sandstone to perform AVF frequency-divided inversion,combine the results with attributes,establish coupling relationship between the amplitude attribute and the sand body,establish the sand body recognition mode,and characterize the plane distribution of the sedimentary facies.The seismic reflection structure type is subdivided into four types.Based on the top surface of theⅣsand group,the average crest amplitude attribute extraction was carried out 10 ms above and below,AVF frequency-divided inversion was carried out in the southwest with heavy gray matter content.There is a positive correlation between the amplitude attribute and the sand body,and the higher the sand content,the larger the amplitude.Underwater distributary channel are mainly distributed in the S1072 well area and the northwest margin of the study area.Sand flat are mainly distributed in the AT10 and S111 well areas,exhibiting a sheet.Tidal sand ridge are mainly distributed in the south,and can be used as a research area to find the key areas of lithologic traps.

关 键 词：AVF分频反演 地震多属性分析 混积环境 砂体 石炭系 桑塔木南 

分 类 号：TE121.3[石油与天然气工程—油气勘探] P631[天文地球—地质矿产勘探]