地震沉积解释技术在高邮凹陷泰二段烃源岩预测中的应用  

Application of the Technology of Seisimic Sedimentology to Prediction of the Source Rock of K_2t_2 in Gaoyou Sag

作　　者：高韧[1] 沈荣[1] 季红军[1] 

机构地区：[1]中国石化股份有限公司江苏油田分公司物探技术研究院,南京210046

出　　处：《科学技术与工程》2014年第32期16-21,共6页Science Technology and Engineering

摘　　要：泰州组是高邮凹陷现实的勘探接替层系和重要的资源接替领域。钻井数量少、勘探程度低、烃源岩的分布范围及油气资源潜力难以准确评价是制约其油气勘探的主要难点。以研究区内现有钻井资料及烃源岩地化分析成果为基础,充分利用地震资料横向分辨率高的优势,开展基于地层切片的地震多属性融合分析,首次将地震沉积解释技术运用到烃源岩平面发育及展布特征预测中,取得较好效果。研究表明,高邮凹陷中东部泰二段为半深湖相沉积,烃源岩有机质丰度高、热演化为低熟—成熟阶段,是高邮凹陷泰州组烃源岩有利发育区。地震沉积解释成果与区域沉积环境、烃源岩发育特征吻合较好,是井资料较少地区研究烃源岩发育、分布范围的有效技术手段。K2t2 is the realistic potential target and important replacement area of Gaoyou Sag. Few wells, low-de-gree exploration, how to predict the distribution of the source rock and evaluate the resource potential exactly, theseare main difficulties to restrict the oil exploration of k2t2. Based on the well data and geochemical data of the sourcerock and take full advantage of high horizontal resolution of seismic data, multi-attribute fusion were analyzed basedon the strata slice, firstly applied the technology of seisimie sedimentology to the prediction of distribution of thesource rock and obtained a striking effect. This indicated that K2t20f middle-east of Gaoyou Sag show the sedimen-tary characteristic of Semi-deep lacustrine facies with high TOC, low mature-mature thermal maturity, it is favorablearea of the source rock of K2t2, Gaoyou sag. The results of seisimic sedimentology agree well with the depositionalenvironments and the source rock generation feature. It was proved to be the effectual method of researching charac-teristics and distribution of source rock for few-well areas.

关 键 词：高邮凹陷 泰二段 烃源岩预测 地层切片 地震沉积学 

分 类 号：P631.44[天文地球—地质矿产勘探]