页岩气储层岩屑与岩心录井量化描述方法探讨

The Way of Quantitative Description of Shale Gas Reservoir Cuttings and Core Log

多年来,页岩气储层描述的技术思路和实现方式主要源于常规油气藏储层,对页岩气藏并不适用。为了实现页岩气储层岩屑与岩心特征信息的录井量化描述,以页岩气录井实践经验为基础,针对页岩气储层的特殊性确定了包括分类收集页岩气井资料,待描述井的页岩气储层描述井段、井类别,描述参数和描述曲线刻度范围,曲线图充填方式与绘图风格,以及确定页岩气储层岩相组合类型、评价页岩气储层品质的具体描述方法等。涪陵页岩气田多口井的应用显示:给出的页岩气储层岩屑与岩心录井量化描述方法,能够有效指导页岩气水平井地质导向和页岩品质综合评价,能够为页岩气高效开发提翔实数据,可供同行业借鉴与参考。

In order to realize logging quantitative description of shale gas reservoir cuttings and core characteristic information,on the basis of shale gas logging practice experience and in view of the particularity of shale gas reservoir,this paper identifies the specific Description method,steps and technical process including classified collection of shale gas well data,description sections of the shale gas reservoir of the wells to be described,well category,description parameters and describing curve graph scale range,packing way and the drawing style,and determining the shale gas reservoir lithofacies combination type and evaluating shale gas reservoir quality.The application of several wells in Fuling Shale Gasfield shows that the quantitative description method of shale gas reservoir cuttings and core logging can effectively guide the geological guidance of horizontal shale wells and comprehensive evaluation on shale quality,and provide detailed data for efficient development of shale gas,which can be used for reference in the industry.