基于阵列声波测井信息的页岩储层裂缝评价

Evaluation of Fractures in Shale Reservoirs Based on Array Sonic Logging Data

为准确评价页岩气储层裂缝特征,利用偶极声波测井实验,获取阵列声波模式波衰减信息与裂缝的关系,形成阵列声波测井模式波衰减计算方法,并利用衰减信息制订判别不同裂缝类型、裂缝尺度大小的方法。研究成果能为制定更加合理高效的储层压裂方案提供指导。

In order to accurately evaluate the characteristics of fractures in shale gas reservoirs,this study utilizes dipole sonic logging experiments to obtain the relationship between array sonic wave attenuation data and fractures.It develops a calculation method for wave attenuation in array sonic logging data and formulates a technique to discriminate different types and sizes of fractures using attenuation information.The findings can provide guidance for developing more reasonable and efficient reservoir fracturing programs.