石油实验地质2018，Vol.40Issue(3)：454-460,7.DOI:10.11781/sysydz201803454
鄂尔多斯盆地山西组低成熟度页岩生烃热模拟
Hydrocarbon generation simulation of low?maturity shale in Shanxi Formation, Ordos Basin
摘要
Abstract
Low-maturity organic-rich shale from the Paleozoic Shanxi Formation in the eastern margin of Ordos Basin was chosen for pyrolysis simulation in order to find out hydrocarbon generation laws and its influencing factors,and to reveal the hydrocarbon generation potential of shale. A pyrolysis system of sealed gold tubes in high pressure vessels was employed to conduct pyrolysis experiments at two heating rates of 20℃/h and 2℃/h under a constant confining pressure of 50 MPa. The yields of gaseous hydrocarbons and liquid hydrocarbons,and the carbon isotopic compositions of gaseous hydrocarbons were measured. The experimental products at different heating rates were analyzed, the carbon isotope characteristics and genesis were discussed, and a hydrocarbon generation model of Shanxi group was established. The research demonstrated that(1)the relatively low heating rate was favorable for the generation of hydrocarbon gas;(2)at the relatively low heating rate, both yield of liquid hydrocarbon and temperature of maximum yield were low;(3)the temperature had a significant effect on the carbon isotope of pyrolysis gas. However,the effect of heating rate on the carbon isotope of pyrolysis gas was not obvious. A shale hydrocarbon generation model was established according to the thermal simulation experi-ment. The results of hydrocarbon generation simulation indicated that the shale in the Shanxi Formation in the Ordos Basin had a good potential of hydrocarbon generation.关键词
页岩/热模拟/升温速率/碳同位素/生烃模式/山西组/鄂尔多斯盆地Key words
shale/thermal simulation/heating rate/carbon isotope/hydrocarbon generation model/Shanxi Formation/Ordos Basin分类
能源科技引用本文复制引用
高栋臣,郭超,姜呈馥,张丽霞,王晖,史鹏,陈奕奕..鄂尔多斯盆地山西组低成熟度页岩生烃热模拟[J].石油实验地质,2018,40(3):454-460,7.基金项目
国家科技重大专项"延安地区陆相页岩气勘探开发关键技术"(2017ZX05039)和陕西延长石油集团科技计划"延长探区陆相页岩油气资源评价与富集区预测"(ycsy2017ky-A-20-3)共同资助. （2017ZX05039）
