潘谢矿区石盒子组煤系页岩有机质特征及其对含气量的影响Shihezi Formation Coal Measures Shale Organic Matter Features and Their Impact on Gas Content in Panxie Mining Area
和钰凯,李贤庆,李杰豪,张学庆,李阳阳,邹晓艳
摘要(Abstract):
潘谢矿区是安徽省淮南煤田重要的深部煤炭生产矿区,其石炭-二叠系煤系地层具有丰富的天然气资源。应用有机碳、热解、显微组分定量、等温吸附等实验分析数据,对潘谢矿区石盒子组煤系页岩有机质特征与含气量进行研究,并利用梯度下降算法建立了含气量与有机碳含量(TOC)和有机质成熟度(R_O)的多元线性模型。结果表明:潘谢矿区石盒子组煤系页岩TOC较高(平均为1. 20%),有机质类型为Ⅲ型,成熟度R_O为0. 75%~1. 12%,处于成熟阶段,页岩含气量较高(平均为1. 93 m~3/t)。多元线性模型表明,煤系页岩TOC和R_O的增加会有利于页岩气生成,但R_O对含气量的影响更为明显。
关键词(KeyWords): 煤系页岩;石盒子组;有机质特征;含气量;多元线性模型;潘谢矿区
基金项目(Foundation): 国家自然科学基金项目(U1810201、41572125);; 国家科技重大专项课题(2016ZX05007-003);; 中央高校基本科研业务费专项资金项目(2010YM01)
作者(Author): 和钰凯,李贤庆,李杰豪,张学庆,李阳阳,邹晓艳
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