兴隆台构造带沙河街组三段浊积岩优质储层叠前地震预测  

PRE-STACK SEISMIC PREDICTION OF THE HIGH-QUALITY TURBIDITE RESERVOIR IN E_S^3 OF XINGLONGTAI STRUCTURAL BELT

作　　者：陈昌[1] CHEN Chang(Research Institute of Exploration and Development, PetroChina Liaohe Oilfield Branch Company, Panjin 124010, China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《大庆石油地质与开发》2017年第1期144-149,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目"富油凹陷的形成与前景预测"(2013D-0708)资助

摘　　要：兴隆台构造带沙河街组三段发育多套深水浊积砂体,并被优质烃源岩所包围,是岩性油气藏发育的有利地区。但由于浊积砂体具有泥质体积分数大、储层非均质性强的特点,且砂泥岩波阻抗分异性差,故常规叠后波阻抗反演无法准确识别优质储层,制约了这一地区岩性油气藏的勘探发现。从岩石物理建模入手,通过多种弹性属性交会分析,指出泊松比为识别浊积岩优质储层的有效弹性参数。利用保幅保真地震资料,采用叠前反演得到泊松比,对浊积岩优质储层分布进行了预测,预测结果与钻探成果吻合。该方法可以有效预测复杂岩性优质储层。Several sets of deep turbidite sandbodies are well developed in Member-3 of Shahejie Formation（ES～3） in Xinglongtai Structural Belt,and moreover surrounded by the high-quality source rocks,thus the favorable region of the lithologic hydrocarbon reservoirs is formed. However,these turbidite sandbodies are characterized by bigger volume fractor of the mud content and stronger reservoir heterogeneity,and furthermore the wave impedance diversity is so poorer for the sandstones and mudstones that the wave impedance inversion after the conventional stacks can＇t accurately predict the high-quality reservoirs,thus the exploration discovery of the lithologic petroleum pools is constrained in the area. In the light of the petro-physical modeling and cross plot analysis of multiple elasticity attributes,the Poisson＇s ratio is presented to be the effective elastic parameter to recognize high-quality turbidite reservoirs. With the help of the amplitude-reality preserved seismic data and pre-stack inversion,the Poisson＇s ratio is deprived to predict the distributions of the high-quality turbidite reservoirs,and moreover the predicted achievements are well matched with the drilling results. In a word,the method can effectively predict the complex highquality lithologic reservoirs.

关 键 词：浊积砂体 岩石物理 泊松比 沙河街组三段 

分 类 号：P631[天文地球—地质矿产勘探]