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叙述了深层特殊岩性致密高阻薄层油气层的岩石学特征和储集类型,并指出深层高温高压环境下成岩中后期的脱碳酸盐化作用是该类储层次生孔隙发育的有利条件。分析了该类油气层的测井响应及成因机制,同时提出该类储层有效孔隙度的计算和流体性质的评价方法。利用神经网络技术,计算了储层的渗透率和束缚水饱和度,并从相对性原理出发,编制了该类储层测井资料数字处理软件。该方法在大港油田深层探井特殊岩性储层的评价中见到了良好的效果
The petrological characteristics and reservoir types of tight and highly resistive thin layers of oil and gas reservoirs in deep special lithologies are described. It is also pointed out that the decarbonization of mid-late diagenesis in deep high-temperature and high-pressure environments is favorable for the secondary porosity development of such reservoirs condition. The logging response and genesis mechanism of this type of oil and gas reservoir are analyzed. Meanwhile, the calculation of effective porosity and the evaluation method of fluid property are proposed. Using neural network technology, the reservoir permeability and irreducible water saturation were calculated. Based on the relativity principle, the digital processing software for logging data was developed. The method has good effect in the evaluation of the special lithological reservoirs in deep exploratory wells in Dagang Oilfield