大牛地气田奥陶系风化壳水平井测井解释评价

通过对大牛地气田奥陶系风化壳碳酸盐岩储层分类及裂缝的测井响应特征研究认为,风化壳碳酸盐岩储层主要分为裂缝-溶洞型、裂缝型和孔隙型三类;并根据储层类型和裂缝识别敏感参数建立了裂缝识别技术及相应的裂缝型储层测井解释模型,确定了储层物性下限;同时根据水平井测井特点,利用综合测井处理解释技术,确立了风化壳储层水平井测井解释方法,建立了气、水层测井解释识别标准,为风化壳水平井的测井解释评价奠定了基础。该方法在大牛地气田取得了较好的应用效果。

Horizontal well logging interpretation evaluation of Ordovician weathering crust in Daniudi gas field

Through carbonate reservoir classification and the logging response characteristics of fractures of Ordovician weathering crust in Daniudi gas field,the carbonate reservoir type of weathering crust can be divided into cracks,fracture and pore types.According to the types of reservoir and sensitive parameters of fracture identification,the technique of fracture identification and the corresponding fracture reservoir logging interpretation model has been established and the lower limit of reservoir physical property has been determined.Meantime,based on horizontal well logging characteristics,by using the comprehensive logging interpretation technology,the weathering crust reservoir logging interpretation method of horizontal wells and the logging interpretation identification standard for gas and water layers have been established,which lays a solid foundation for the horizontal well logging interpretation evaluation of the weathering crust.The method in Daniudi gas field has obtained the good application effect.