成煤环境不同类型烃源岩生排烃模式研究

STUDY ON THE MODELS OF HYDROCARBON GENERATION AND EXPULSION FROM VARIOUS SOURCE ROCKS IN COAL-BEARING ENVIRONMENTS

秦建中 刘宝泉

QIN Jian-zhong LIU Bao-quan

中国矿业大学, 北京校区, 北京, 100083 2. 中国石化, 石油勘探开发研究院, 无锡实验地质研究所, 江苏, 无锡, 214151 3. 中国石油, 华北油田, 勘探开发研究院, 河北, 任丘, 062552

Beijing Campus, China University of Mining Industry, Beijing 100083, China 2. Wuxi Research Institute of Experimental Geology, SINOPEC, Wuxi, Jiangsu 214151, China 3. Institute of Petroleum Exploration and Development, Huabei Oilfield, Renqiu, Hebei 062552, China

该文运用热压模拟试验和油气地球化学等新技术,在系统分析和总结大量分析数据和地质资料的基础上,对成煤环境不同类型烃源岩的生排烃模式进行了深入细致和系统的研究.本中提出,成煤环境沉积的暗色泥岩、碳质泥岩和煤生烃能力差别很大,滨海(湖)沼泽煤及碳质泥岩多好于泥岩,而较深水—浅水湖(或海)沼泽泥岩多优于煤.作者还创建了煤系4种有机质类型和2种主要岩类的9种生排烃模式,并用实际地质剖面排烃模式进行了验证,指出成煤环境Ⅲ1-Ⅱ1型泥岩排油能力明显优于煤及碳质泥岩.

Using new technologies such as the thermo-pressure simulation experiment and hydrocarbon geochemistry,the hydrocarbon generation and expulsion models for various source rocks in coal-bearing environments were studied in detail on the bases of the systematic analysis and summarization of a number of geochemical and geological data.There are dramatic differences in hydrocarbon generation potential among dark mudstone,carbargillite and coal in coal-bearing environments.The coal and carbargillite formed in shore swamp are better than the mudstone,but the mudstone formed in relative deep to shallow lacustrine (sea) is better than the coal.Nine hydrocarbon generation and expulsion models for four organic matter types and two main rocks in coal-bearing environments were established,and the models were tested byreal geological profiles.The ability of hydrocarbon expulsion for mudstone with type Ⅲ1-Ⅱ1 organic matter is in an advantageous position comparing with coal and carbargillite in coal-bearing environments.

https://doi.org/10.11781/sysydz200306758