焦石坝页岩储层矿物含量测井计算方法探讨  

Discussion on Logging Calculation Method of Mineral Content in Shale Reservoirs of Jiaoshiba Area

作　　者：周依南 刘帅[1] 严伟[1] 冯明刚[1] 王燕[1] Zhou Yinan;Liu Shuai;Yan Wei;Feng Ming gang;Wang Yan(Research Institute of SINOPEC Exploration Company, Chengdu Sichuan 610041)

机构地区：[1]中国石化勘探分公司勘探研究院,四川成都610041

出　　处：《中外能源》2019年第3期60-64,共5页Sino-Global Energy

基　　金：国家科技重大专项"上扬子及滇黔桂区页岩气资源调查评价与选区"(编号:14B12XQ151001)

摘　　要：页岩储层的矿物组分与含量是影响储层压裂的重要因素。页岩储层矿物含量纵向上变化大,矿物组分复杂,测井资料具有纵向分辨率高的特点,利用测井资料能较好地评价页岩储矿物,指导储层改造。目前主要有四种页岩储层矿物含量的测井计算方法 :复杂岩性分析CRA法、ELAN最优化模型分析法、ECS测井计算法和经验统计法。这四种方法适用范围不同,在勘探初期缺少岩心实验资料时,CRA法和ELAN法适合应用,但这两种方法的计算结果精度相对偏低;ECS测井资料可用于地层矿物含量的计算,但ECS测井费用相对昂贵,普遍应用会增加勘探成本;常规测井资料和岩心实验资料丰富时适合使用经验统计法,该方法具有较好的地区适用性,解释精度较高。在不同的勘探阶段和不同的资料录取情况下选择合适的方法不仅有利于勘探效果的提升,也有利于勘探成本的控制。Mineral component and content of shale reservoirs are the important factors influencing reservoir fracturing.The mineral content is various on the vertical and the component is complex,which shows high vertical resolution on the logging data.The logging data can be used for mineral evaluation and reservoir refor-mation guide.At present,there are four logging calculation methods of shale reservoir mineral including tradi-tional complex lithology analysis method(CRA),ELAN optimization model analysis method and ECS logging calculation method and empirical method.They were applied at various ranges.CRA and ELAN method are suitable when lacking of core experiment data in the initial exploration,but the accuracy of their results is relatively low.ECS logging data can be used to calculate mineral content of the formations,but universal application will increase the cost of exploration for expensive ECS logging.The empirical method is applicable when conventional logging and core experiment data are plentiful,which has good effect and high interpretation accuracy in the study area.Various methods may be selected in various exploration stages and on differ-ent data acquisition conditions.It not only enhances the exploration effect,but also is beneficial to control the exploration cost.

关 键 词：焦石坝地区 页岩储层 矿物含量 测井计算方法 

分 类 号：P618.13[天文地球—矿床学]