复杂孔隙结构低阻成因及测井评价方法研究

大庆八厂葡萄花油层广泛发育低阻油气藏,复杂孔隙结构是低阻油藏形成的主要原因之一。通过研究区低阻油层的岩石孔隙结构特征研究,结合试油资料,验证了本区复杂孔隙结构是造成低阻油层发育的主要原因之一。通过分析化验资料,利用研究区孔隙结构参数建立了储层分类标准,指出了低阻油层发育的储层类型;利用压汞和常规孔渗资料,建立了孔隙结构参数和储层品质指数的关系模型,形成了利用测井资料评价孔隙结构的方法和模型,为低阻油层有利区预测提供了技术保证。研究表明:该技术对于解决低阻油层的识别和评价具有重要的应用价值。

Study on the Genesis of Low Resistivity Layer With Complicated Pore Structures and the Method of Log Evaluation

There developed plenty of low-resistive formations in Putaohua formation of Daqing oilfield,one of the genesises of low-resistive formations is complicated pore structures of the rock. In this paper, by studying the characteristics of rock pore structures and combining with the well test result, it’s proved that complicated pore structures is one main reason which caused low resistivity formation development. Through using all kinds of analysis data, the standard of reservoir classification was established by employing the parameter of pore structures; the relationship between physical property and pore structure of reservoir was established by using mercury penetration experiment and Porosity and permeability data, the method and model for pore structure evaluation based on well log were obtained, witch could provide technical guarantees for the prediction of favorable development formation with low resistivity. It’s point out that the technology has important application value for the evaluation and recognition of reservoir with low resistivity.