Based on kerogen-generated hydrocarbon model, a new method to calculate hydrocarbon yields for coals and coaly samples was put forward by means of pyrolysis technique. At the same time, the empirical criteria suggeste...Based on kerogen-generated hydrocarbon model, a new method to calculate hydrocarbon yields for coals and coaly samples was put forward by means of pyrolysis technique. At the same time, the empirical criteria suggested by Powell were revised. The threshold value was preliminarily defined as HC yields >30 mg HC per gram TOC for effective gas source rocks and >60 mg HC per gram TOC for effective oil source rocks. Additionally, it was also confirmed that the relative compositions of the three ranges of C1-C5 total hydrocarbons, C6-C14 n-alkanes plus n-alkenes and C15+ n-alkanes plus n-alkenes from pyrolysates can be effectively used to distinguish the coal-generated hydrocarbon types.展开更多
Some typical coal and maceral samples are selected for oil and gas-generatingsystematic thermal simulation experiments, Rock-Eval, GC and GC-MS analyses. Results cause productivity curves of extracts and gaseous, ligh...Some typical coal and maceral samples are selected for oil and gas-generatingsystematic thermal simulation experiments, Rock-Eval, GC and GC-MS analyses. Results cause productivity curves of extracts and gaseous, light, liquid as well as total hydrocarbon. Effects of macerals and maturation on hydrocarbon productivities and compositions are synthetically discussed. Evaluation indexes and plan on coal-generated oil and gas in bituminous coal rank are suggested according to the data from experiments and analyses.展开更多
Ordos is located in the western part of North China Platform and was subjected to erosion at the late stage of Caledonian movement when the platform was uplifted. Later, Variscian movement made this region subside and...Ordos is located in the western part of North China Platform and was subjected to erosion at the late stage of Caledonian movement when the platform was uplifted. Later, Variscian movement made this region subside and the paleo-North China Sea and Qilian Sea transgressed onto Ordos, from both the east and west sides during the展开更多
文摘Based on kerogen-generated hydrocarbon model, a new method to calculate hydrocarbon yields for coals and coaly samples was put forward by means of pyrolysis technique. At the same time, the empirical criteria suggested by Powell were revised. The threshold value was preliminarily defined as HC yields >30 mg HC per gram TOC for effective gas source rocks and >60 mg HC per gram TOC for effective oil source rocks. Additionally, it was also confirmed that the relative compositions of the three ranges of C1-C5 total hydrocarbons, C6-C14 n-alkanes plus n-alkenes and C15+ n-alkanes plus n-alkenes from pyrolysates can be effectively used to distinguish the coal-generated hydrocarbon types.
文摘Some typical coal and maceral samples are selected for oil and gas-generatingsystematic thermal simulation experiments, Rock-Eval, GC and GC-MS analyses. Results cause productivity curves of extracts and gaseous, light, liquid as well as total hydrocarbon. Effects of macerals and maturation on hydrocarbon productivities and compositions are synthetically discussed. Evaluation indexes and plan on coal-generated oil and gas in bituminous coal rank are suggested according to the data from experiments and analyses.
文摘Ordos is located in the western part of North China Platform and was subjected to erosion at the late stage of Caledonian movement when the platform was uplifted. Later, Variscian movement made this region subside and the paleo-North China Sea and Qilian Sea transgressed onto Ordos, from both the east and west sides during the
