川东北YB气田灰岩储层裂缝识别与有效性评价  

Identification and Effectiveness Evaluation of Fractures in Limestone Reservoir of YB Gas Field in Northeastern Sichuan

作　　者：凡睿[1] 

机构地区：[1]中国石油化工股份有限公司勘探分公司,四川成都610041

出　　处：《测井技术》2015年第6期729-732,共4页Well Logging Technology

基　　金：国家科技重大专项碎屑岩层系大中型油气田富集规律与勘探关键技术(2011ZX05002-004)资助

摘　　要：利用岩心、常规测井、电阻率成像测井等资料开展裂缝识别与有效性评价研究。YB气田大安寨段裂缝以低角度的微裂缝、小裂缝为主;常规三孔隙度测井、双侧向测井结合电阻率成像测井能有效识别裂缝;阵列声波测井可有效评价裂缝的有效性。针对电阻率成像测井与阵列声波测井资料较少,提出利用电成像测井标定常规测井建立裂缝发育指标分类(Ⅰ类、Ⅱ类、Ⅲ类)标准与定量评价方法。该方法在现场储层评价中取得了良好效果。A lot of extra low porosity and low permeability reservoirs with carbonate rock are developed in Daanzhai formation of YB gas field in northeast Sichuan.The development of fractures is the key to the effectiveness and high oil and gas yield of reservoir.Therefore,it is needed to research the identification and effectiveness evaluation of fractures with the help of core,conventional logging and resistivity imaging logging data.Research shows that the majority of fractures are micro-cracks and small cracks with low angle;the conventional three porosity log curves,the dual laterolog curves combining with resistivity imaging logging can effectively identify the fractures;array sonic logging can effectively evaluate effectiveness of fractures.But the resistivity imaging logging and array sonic logging data are lacking in oilfield,so the idea of calibrating conventional logging by electric imaging logging is proposed,and the development index classification(class I,II and III)standard of fractures and its evaluation method are established.The application effect is better.

关 键 词：电阻率成像测井 阵列声波测井 裂缝识别 裂缝有效性 大安寨 

分 类 号：P618.13[天文地球—矿床学] P631.81[天文地球—地质学]