石油实验地质2017，Vol.39Issue(3)：397-401,408,6.DOI:10.11781/sysydz201703397
确定烃源岩有效排烃总有机碳阈值的方法及应用
Method and application for identifying TOC threshold of hydrocarbon-expelling source rocks
摘要
Abstract
Considering the fact that hydrocarbon-expelling source rocks are difficult to identify in oil and gas geology, a method to distinguish hydrocarbon-expelling source rocks was proposed using the conventional TOC and pyrolysis analysis parameters (Rock-Eval).This method is used to identify the TOC threshold, based on hydrocarbon-generation amount parameters [IHC=S1/w(TOC) and w(A)/w(TOC)].Only when TOC content is higher than the threshold, can the source rock be regarded as hydrocarbon-expelling source rock.This method was applied to the source rocks in the Permian Lucaogou Formation in the Junggar and Santanghu basins, the Cretaceous Xiagou Formation in the Ying'er and Qingxi sags in the Jiuquan Basin, and the Upper Triassic Yanchang Formation Chang-7 member in the Ordos Basin.The discriminant results are useful, but it requires source rocks with similar organic matter type and maturity.The parameters represent liquid hydrocarbon amount.Gaseous hydrocarbons are lost easily, and as a result, the method is more effective for oil source rock.关键词
总有机碳阈值/生烃量/残留烃量/饱和吸附/排烃源岩/油气生成Key words
TOC threshold/hydrocarbon generating amount/remained hydrocarbon amount/saturated absorption hydrocarbon/hydrocarbon-expelling source rock/oil and gas generation分类
能源科技引用本文复制引用
高岗,杨尚儒,陈果,胡丹丹,赵克..确定烃源岩有效排烃总有机碳阈值的方法及应用[J].石油实验地质,2017,39(3):397-401,408,6.基金项目
中国石油股份公司科技重大专项 (2012E330)和中国石油第四次油气资源评价(2013E-050209)资助. （2012E330）
