鄂尔多斯盆地定边庆阳地区长7段致密油烃源岩地质数据挖掘与评价

发布时间：2018-04-02 19:36

本文选题：鄂尔多斯盆地　切入点：长段　出处：《成都理工大学学报(自然科学版)》2017年04期

【摘要】：探讨鄂尔多斯盆地上三叠统长7段致密油有效烃源岩的主控地质因素及分布特征。结合地质异常理论,采用因子分析、痕量元素分析、趋势面分析及标准化处理等技术手段,提出一种对研究区长7段烃源岩进行地质数据挖掘与信息整合的评价方法,建立表征烃源岩品质的综合性无因次线性组合,揭示出在有机碳丰度普遍较高的背景下,有效烃源岩的发育主要受控于低等水生生物勃发(有机质类型指数)与有机质热演化程度(镜质体反射率)。有效烃源岩集中分布于姬塬南部、定边西部、油房庄东部、华池地区及合水东北部,对致密油高产富集带的分布具有一定的控制作用。有利于进一步提高长7段致密油勘探开发成效的地区主要是耿湾-环县、华池北部、油房庄-吴仓堡及定边。
[Abstract]:The main controlling geological factors and distribution characteristics of effective source rocks of tight oil in Chang7 member of Upper Triassic in Ordos Basin are discussed.Based on the theory of geological anomaly, factor analysis, trace element analysis, trend surface analysis and standardized processing, a method for geological data mining and information integration of hydrocarbon source rocks in Chang7 member of the study area is proposed.A comprehensive dimensionless linear combination is established to characterize the quality of the source rock, which reveals that the organic carbon abundance is generally high.The development of effective source rocks is mainly controlled by the occurrence of low aquatic organisms (type index of organic matter) and the degree of thermal evolution of organic matter (vitrinite reflectance).The effective source rocks are mainly distributed in the south of Jiyuan, the west of Dingbian, the east of Youfangzhuang, the Huachi area and the northeast of Heshui.The main areas to improve the exploration and development effect of dense oil in Chang 7 are Geng Wan-Huan County, Huachi North, Youfangzhuang-Wu Cang Bao and Dingbian.
【作者单位】：中国石油勘探开发研究院;
【基金】：“十三五”国家科技重大专项(2016ZX05046002)
【分类号】：P618.13

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