摘要
实测四川二、三叠系及震旦系致密碳酸盐岩结果表明,束缚水膜厚度薄、束缚水饱和度低、含气饱和度高,再结合吸附烃、包裹体、沥青、热解色谱、生油指标、毛细管阻力等资料,认为致密碳酸盐岩中存在大量极难流动的原生天然气是形成自生自储气藏的气源,通过对3种类型的自生自储气藏的分析研究,探讨了自生自储气藏的形成机制。
Results of actual analysis of Permian, Triassic and Sinian tight gas reservoir rock demonstrate that it is characterized by thin irreducible water films, low irreducible water and high gas saturations. These results, combined with other data, such as those of adsorption hydrocarbons, inclus- ions, bitumens, pyrolytic chromatography, index of oil generation, capillary resistance etc., demonstrate that large amount of primary natural gas in the tight carbonate reservoir which is hard to migrate is the origin gas in such reservoir, the source rock formation being the reservoir formation itself. The mechanism of formation of such gas reservoir is further discussed by an analysis of 3 types of such reservoir.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1991年第2期20-27,共8页
Acta Petrolei Sinica
