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The Comparision of Gas Generation Potential and Model between Two Different Thermal Simulation Systems
Author(s): HU Guoyi, LI Zhisheng, LUO Xia, LI Jian, JIANG Zhusheng, WANG Chunzuo
Pages: 718-
723
Year: 2004
Issue:
4
Journal: ACTA SEDIMENTOLOGICA SINICA
Keyword: 热模拟; 开放体系; 封闭体系; 裂解; 生气模式;
Abstract: 对海相Ⅱ1型有机质在封闭体系和开放体系下开展了产气率热模拟实验,并对其在两种体系下的产气率和生气模式进行了对比研究.在开放体系下,样品产气率较低,Ⅱ1型有机质产气率为84.2 m3/吨·TOC,但在封闭体系下实验热模拟产气率很高,Ⅱ1型有机质产气率可达371.2 m3/吨.TOC;在开放体系下Ⅱ1型有机质大量生气阶段Ro为1.0%~1.5%之间,在封闭体系下Ⅱ1型有机质大量生气阶段在Ro在1.5%~2.5%之间.在不同实验体系下有机质产气率和生气模式的差异主要与有机质的生气机理有关,在开放体系下有机质主要为干酪根裂解气,而在封闭体系下有机质生成的天然气为原油和干酪根裂解的混合气.
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