柴达木盆地高原复合油气系统多源生烃和复式成藏
网络出版日期: 2011-06-20
基金资助
中国石油天然气股份有限公司“柴达木盆地油气勘探开发关键技术研究”项目(编号:07-01Z-01)资助
Multi-source hydrocarbon generation and accumulation of plateau multiple petroleum system in Qaidam Basin
Online published: 2011-06-20
李传亮 , 彭朝阳 . 柴达木盆地高原复合油气系统多源生烃和复式成藏[J]. 岩性油气藏, 2011 , 23(3) : 7 -14 . DOI: 10.3969/j.issn.1673-8926.2011.03.002
Undergoing an evolution cycle of Palaeozoic “block-trough” andMesozoic “basin-orogenic belt”, Qaidam Basin developed four different types of source rocks, including Carboniferous marine-continental transitional facies, Jurassic limnetic facies, Tertiary saline facies and Quaternary salt lake facies, and formed a compound oil/gas system of “multisource, multi-depression, and multi-kitchen”, which has a characteristic of “multi-factor controlling hydrocarbon-charging, multi-structure and multi-type-trap reservoir formation, multi-layer oiliness”. Based on the research of reservoir forming mechanism, it is revealed that different types of reservoir can form outside the source rock, on slope, in late Himalayan traps and deep layer, which can guide the exploration and bring newdiscoveries and progress.
Key words: coalbed methane; cheat; matrix; adsorption; desorption; degas; diffusion
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