烃源岩TOC测井反演技术在南海西部油田的应用  

Application of source rock TOC log inversion technology in the west South China Sea oilfield

作　　者：秦圆明 刘婕 高弘毅 杨坚 程宝庆[1] 杨宝伟[1] QIN Yuanming;LIU Jie;GAO Hongyi;YANG Jian;CHENG Baoqing;YANG Baowei(CNOOC Energy Development Co.,Ltd.,Engineering Technology Zhanjiang Branch,Zhanjiang Guangdong 524057,China)

机构地区：[1]中海油能源发展股份有限公司工程技术湛江分公司,广东湛江524057

出　　处：《石油化工应用》2023年第10期78-82,共5页Petrochemical Industry Application

摘　　要：地球化学实验分析烃源岩的方法来评价有机质容易受样品采集、样品质量和分析化验工作量的限制,常规的有限样品均值法更是易漏优质烃源岩且存在较大误差。而烃源岩总有机碳(TOC)测井反演技术则是通过运用测井曲线信息实现了对烃源岩TOC含量连续分布情况的精准评价,特别是针对海洋勘探存在某些井无法取样的困难,通过线性回归和BP神经网络算法利用一口井的地球化学资料和测井资料建立模型去模拟另一口井的烃源岩地球化学特征,从而实现了海上烃源岩相关指标的精准评价。通过实际井应用证实该技术的有效性,结果符合率达95%以上,极具推广应用价值。The method of geochemical experiment analysis of source rock to evaluate organic matter is easily limited by sample collection,sample quality and analysis workload.The conventional limited sample mean method is more likely to leak high-quality source rock and has large errors.The total organic carbon(TOC)logging inversion technology of source rock realizes accurate evaluation of the continuous distribution of TOC content of source rock by using logging curve information,especially for the difficulty of sampling in some wells of marine exploration,the geochemical data and logging data of one well are used to establish a model to simulate the geochemical characteristics of source rock of another well through linear regression and BP neural network algorithm.Thus,accurate evaluation of relevant indicators of offshore source rock is realized.The effectiveness of this technology has been confirmed through practical well applications,with a coincidence rate of over 95%,which has great promotion and application value.

关 键 词：总有机碳(TOC) 数值分布不连续 模拟 测井反演 

分 类 号：TE132.14[石油与天然气工程—油气勘探]