石油实验地质2017，Vol.39Issue(4)：527-534,8.DOI:10.11781/sysydz201704527
渤海湾盆地东濮凹陷古生界煤成烃特征模拟实验研究
Simulation of hydrocarbon generation of the Paleozoic coals in the Dongpu Sag, Bohai Bay Basin
摘要
Abstract
The hydrocarbon generation and expulsion characteristics under different temperatures and pressures and the hydrocarbon potential of coals were studied based on the thermal simulation with water in a half-open system of coals using the geological conditions of the Carboniferous-Permian coals in the Dongpu Sag, Bohai Bay Basin.The results indicate that: (1) The Carboniferous-Permian coals in the Dongpu Sag show a very high hydrocarbon generation potential.The yield of hydrocarbon generated can reach 254 mg/g, among which the gaseous products account for 220 mL/g, and the liquid part about 145.8 mg/g.(2) The yield of thermal cracking oil from coal shows a single peak, which appears at 325 ℃ (Ro=1.08%).Almost 40% of the liquid hydrocarbon was expelled from coal.(3) The hydrocarbon generation of coal followed an increasing tendency in several stages.The intervals 325-400 ℃ and 500-550 ℃ are the stages when gaseous hydrocarbon shows a rapid increase.The former increase should be a result of thermal cracking of liquid hydrocarbon, while the latter maybe caused by the condensation of aromatic hydrocarbon.(4) The Carboniferous-Permian coals in the Dongpu Sag yielded both oil and gas, with an oil generation potential appro-ximately equal to that of the Jurassic coals in the Turpan-Harmi Basin, and a gas generation potential matching the Carboniferous-Permian coals in the Ordos Basin.关键词
热模拟/生排烃模式/生烃潜力/煤岩/古生界/东濮凹陷/渤海湾盆地Key words
thermal simulation/hydrocarbon generation and expulsion model/hydrocarbon generation potential/coal/Paleozoic/Dongpu Sag/Bohai Bay Basin分类
能源科技引用本文复制引用
张洪安,张爽,张云献,姚素平..渤海湾盆地东濮凹陷古生界煤成烃特征模拟实验研究[J].石油实验地质,2017,39(4):527-534,8.基金项目
"十三五"国家科技重大专项"东濮凹陷油气富集规律与增储领域"(2016ZX05006-004)资助. （2016ZX05006-004）
