川西坳陷优质烃源岩测井定量预测及分布——以须家河组五段为例  

Well-logging Quantitative Prediction of High-quality Source Rock in Western Sichuan Depression and Its Distribution: An Example from Xujiahe 5 Member

作　　者：李强[1] 袁东山[1] 杨映涛[1] 朱丽[1] 李定军[1] 

机构地区：[1]中国石化西南油气分公司勘探开发研究院,四川成都610041

出　　处：《天然气技术与经济》2018年第2期21-23,58,共4页Natural Gas Technology and Economy

基　　金：国家科技重大专项(2016ZX05002004)

摘　　要：根据岩心粒度实验分析资料,采用测井交会分析方法建立了川西坳陷须家河组五段岩石粒度中值测井解释模型。通过逐步回归方法对表征烃源岩有机碳特征的测井敏感参数进行分析,结合岩石粒度中值测井解释模型成果,建立了岩性约束下高精度有机碳含量测井解释模型,为优质烃源岩的定量预测及分布评价奠定了基础。结合川西坳陷须家河组五段优质烃源岩有机碳含量下限标准,建立了优质烃源岩测井评价标准并对单井优质烃源岩进行划分统计,完成了对川西坳陷须家河组五段各亚段优质烃源岩分布的定量预测与评价工作。Based on some core analysis data on grain size, we developed a well-logging interpretation model of grain-size median for Xujiahe 5 Member in Western Sichuan Depression by means of logging crossplot. Moreover, we employed a stepwise regression method to analyze some parameters sensitive to well-logging characterizing the source-rock TOC; and integrated with the obtained median, we established another high-precise logging interpretation model for the lithology-constrained TOC, providing foundation for quantitatively predicting and evaluating the high-quality source rock and its distribution. Additional, combined with the TOC lower limit, we set up a well-logging evaluation standard for the source rock, and quantitatively predicted the source-rock distribution in different members of Xujiahe Formation, Western Sichuan Depression.

关 键 词：岩石粒度中值 有机碳含量 测井解释模型 优质烃源岩 须家河组 川西坳陷 

分 类 号：P618.13[天文地球—矿床学] P631.81[天文地球—地质学]