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
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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.
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.
引文
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[3]尚教辉,卢双舫,王伟明,等.乌尔逊、贝尔凹陷南一段优质烃源岩测井识别及分布[J].科学技术与工程,2011,11(26):6 285-6 289.
[4]卢双舫,马延伶,曹瑞成,等.优质烃源岩评价标准及其应用:以海拉尔盆地乌尔逊凹陷为例[J].地球科学-中国地质大学学报,2012,37(3):535-544.
[5]卢双舫,黄文彪,陈方文,等.页岩油气资源分级评价标准探讨[J].石油勘探与开发,2012,39(2):249-256.
[6]范厚江,罗小平,李鹏.辽中凹陷优质烃源岩评价[J].天然气技术与经济,2013,7(4):18-21.
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