测井资料在碳酸盐岩储层酸化压裂效果分析中的应用  

The Application of Log Data to the Effect Analysis of Carbonate Reservoir Acid Fracturing

作　　者：张传举[1] 徐大年[1] 韩东春[1] 王冬冬[1] 申小虎[1] 

机构地区：[1]中海油田服务股份有限公司油田技术事业部,北京101149

出　　处：《测井技术》2014年第3期365-369,共5页Well Logging Technology

摘　　要：介绍了酸化压裂工艺原理及酸化压裂前后测井响应特征变化。通过对酸化压裂前后测井资料的对比,常规测井曲线中自然伽马值有一定幅度的增加,井径有不同程度的扩大,双侧向电阻率值均减小且其差异幅度增大,中子、密度、声波等测井曲线所反映的孔隙度增大;在电成像测井图像上,储层段会有成组压裂缝出现,而层状地层则没有明显变化。利用酸化压裂前后双侧向电阻率差异变化幅度与泵压差异幅度评价实际井的酸化压裂效果,建立酸化压裂效果测井评价指标。实例分析表明该方法应用效果良好。Introduced is the principle of acid fracturing technology and the log responses changes after the acid fracturing operation.This article obtains each curve＇s response characteristics through contrasting log data before and after acid fracturing.In conventional logging,the magnitude of gamma-ray has a little increase,and the borehole diameter will have a little expansion.The value of dual laterolog curves will decrease and the magnitude of differences will become larger,and the neutron,density and acoustic wave logging curves which stand for porosity will become large.In the electric imaging logging,there will be groups of fracturing fractures in the reservoir intervals and block layers after acid fracturing,but there is no apparent change in the laminar formation.It is believed that the well acid fracturing effect can be evaluated through contrasting the dual laterolog resistivity amplitude of variation and the pumping pressure difference before and after the acid fracturing.And the logging valuation index of acid fracturing has been built.This method obtains good effect in actual log application.

关 键 词：测井解释 酸化压裂 常规测井 成像测井 电阻率差异 泵压差异 测井资料 

分 类 号：P631.84[天文地球—地质矿产勘探]