Methods of Evaluating the Gas Potential of Marine Mature Kerogen

详细信息   

• 责任者：Shuai Yanhua (Research Center of Petroleum Geology ; Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Zhang Shuichang
• 刊名：Acta Geologica Sinica
• 出版年：2008
• 卷期：82(8)
• 关键词：生烃作用 ; hydrocarbon generation ; 天然气 ; natural gas ; 干酪根 ; kerogen
• 页码：p.1129-1134
• 图表：3 illus., 2 tables, 19 refs.
• 分类号：1003
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

摘要

///This paper analyzes kerogens from various mature stages of kerogens by using elemental analysis and pyrolysis simulation test, finding that gas-generating potential is multiple of HI. For example, the sample with TOC of 12 mg/g and H/C atomic ratio of 0.46 still has a gas generating of 65 mg/g TOC, which accounts for 15% of total gas generation in a close system. This fact indicates that the HI of mature or over-matured organic matters can not be used to evaluate gas-generating potential. Meanwhile, gas generation of kerogen has a good correlation to H/C atomic ratio, with a correlation factor up to 0.96. Calculation by the regression function shows that the minimum H/C atomic ratio for a gas-generating kerogen is 0.26.