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低孔低渗 (孔隙度一般小于 1 2 % ,渗透率大多在 1× 1 0 - 3μm2左右 )性质的碎屑岩作为储层的油气藏是我国中西部地区稳定克拉通盆地或者叠合盆地中最主要的油气藏类型。但是 ,通过近几年的勘探实践发现 ,在低孔低渗含油气区中 ,仍有具优质储集层的高产油气藏存在。从优质储层的构造、沉积和成岩等几个方面讨论了这些优质储层的形成条件、阐述了描述和识别优势储层的原则和方法基础。认为储层的原始物质组成和结构是影响其物性特征的最关键因素、先天母质条件是优质储层之本源 ,并认为从构造和沉积环境条件入手阐明优质储层的成因至关重要
Reservoirs with low porosity and low permeability (generally less than 1 2% porosity and mostly permeability of 1 × 10 -3 m 2) are reservoirs characterized by the fact that the reservoirs in the stable craton basin or superimposed basin in central and western China The most important type of reservoir. However, through the exploration practice in recent years, it is found that there are still high-yield reservoirs with high-quality reservoirs in the low-porosity and low-permeability oil and gas zones. The formation conditions of these high-quality reservoirs are discussed from the aspects of structure, sedimentation and diagenesis of high-quality reservoirs, and the principles and method bases for describing and identifying the dominant reservoirs are expounded. It is considered that the composition and structure of the original material in the reservoir are the most important factors that affect the physical characteristics of the reservoir. The congenital parent material is the source of high quality reservoirs and it is considered that it is very important to elucidate the causes of high quality reservoirs from the tectonic and sedimentary environmental conditions