青海柴西地区常规测井裂缝识别方法

根据青海柴西地区裂缝油气藏的测井系列特点，探讨了用常规测井资料导出一些特征参数，以突出裂缝显示的方法和技术，在此基础上结合地层倾角资料进行了储层类型划分和流体性质识别研究。采用的裂缝识别方法有曲线变化率法、孔隙结构指数法、视地层因素指数法、饱和度比值法、孔隙度比值法、骨架指数比值法、等效弹性模量差比法、电阻率侵入校正差比法、综合概率指数法，地层倾角的电导率异常检测（ＤＣＡ）和裂缝识别测井（ＦＩＬ）

Fracture Identification Technique by Conventional Logs from Western Chaidamu Basin, Qinghai Oilfield

According to the logging suits used in western Chaidamu Basin, Qinghai Oilfield, characteristic parameters are derived from conventional logs to highlight fracture indication. And then combined with diplog data, identification of reservoir type and fluid type is made on the basis of fracture identification. Fracture identification techniques adopted include curve changing rate, pore structure index, apparent formation factor, saturation ratio, porosity ratio, matrix index ratio, relative difference ratio of equivalent elastic modulus, relative difference ratio of resistivity correction for invasion, composite probability index, diplog conductivity anomaly identification and fracture identification log. The processed results from more than ten wells show that these methods are quite effective.