岩性油气藏 ›› 2016, Vol. 28 ›› Issue (6): 1622.doi: 10.3969/j.issn.1673-8926.2016.06.003
摘要: 针对古老碳酸盐岩能否成为有效烃源岩的问题,对我国中部盆地典型古老碳酸盐岩热解的实验结果和成烃实例的分析等展开研究,讨论了古老碳酸盐岩烃源岩能否有效生烃和排烃的问题。结果表明,泥灰岩和泥晶灰岩等相对富有机质岩石,热解模拟生烃量高。在数值模拟初次运移时期,泥灰岩和泥晶灰岩等烃源岩排油较为困难,排气是主要形式,且排气方式以微裂缝排气和扩散排气为主,所以,该类灰岩可以成为有效气源岩,这一认识为古老碳酸盐岩层系的烃源岩评价提供了理论依据。
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