石油实验地质Issue(2)：179-186,8.DOI:10.11781/sysydz20130212
不同类型优质烃源岩生排油气模式
Hydrocarbon generation and expulsion pattern of different types of excellent source rocks
摘要
Abstract
Semi-closed pyrolysis experiments were conducted in order to evaluate what controls the hydrocarbon generation and expulsion efficiency for three types of excellent source rocks ( siliceous, calcareous and clay ones). Each type of source rock has different relative hydrocarbon expulsion efficiencies in the stage of early-middle oil window, where siliceous source rock has the highest oil expulsion efficiency and oil expulsion quanti-ty, reaching to 50% , and the expelled products are dominated by heavy oil. This is followed by calcareous source rock, about 30% . The oil expulsion efficiency of clay source rock is the lowest, about 4% -11% . During the middle-late maturation stage, siliceous source rock tends to achieve the highest expulsion efficiency first, fol-lowed by calcareous source rock (65% ) and then clay source rock. During the late and high-mature stage, the oil expulsion efficiencies of siliceous and calcareous source rocks do not change obviously, while the oil expulsion efficiency of clay source rock increases rapidly from 20% to 90% . The models of hydrocarbon generation and ex-pulsion of three types of excellent source rocks are different in the stage of early-middle oil window.关键词
优质烃源岩/排油效率/生排油气模式/动态演化Key words
excellent source rock/oil expulsion efficiency/hydrocarbon generation and expulsion model/dy-namic evaluation分类
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秦建中,申宝剑,腾格尔,郑伦举,陶国亮,付小东,张玲珑..不同类型优质烃源岩生排油气模式[J].石油实验地质,2013,(2):179-186,8.基金项目
国家重大专项“海相碳酸盐岩层系烃源演化与评价技术(二期)”(2011ZX05005-001-002)资助 （二期）
