测井技术在页岩气储层力学性质评价中的应用

测井技术在页岩气储层力学性质评价中有着非常重要的作用。利用声、电成像以及阵列声波等测井方法可以进行页岩气储层的地应力、岩石力学参数分析。通过地应力和岩石力学参数的分析,可以指导水平井钻井方向、压裂作业方式的选择,并且监控及评价压裂效果,为提高页岩气储层产量提供有力的支撑。本文总结了声、电成像、阵列声波等几种测井方法在页岩气储层力学性质评价方面的应用及意义,并分析了各种测井方法的局限性和适用条件,说明了结合这几种测井方法可以有效地评价页岩气储层的力学性质。

Application of Well Logging to the Evaluation of the Rock Mechanical Properties of the Shale Gas Reservoirs

Well logging plays a very important role in the mechanical property evaluation of the shale gas reservoirs. With the help of resistivity and acoustic imaging well logging and array acoustic well logging, we can analyze the stress and the mechanical properties of the shale gas reservoirs. These results of analysis can help us to increase the production of the shale gas by deciding the drilling direction, choosing the right method and monitoring and evaluating the effect of hydraulic fracturing. In this paper, several logging methods inclu- ding resistivity and acoustic imaging and array acoustic applied in the mechanical evaluation of shale gas reservoirs were introduced. The limitations and appropriate conditions of the logging methods are discussed and the conclusion is that combining the logging methods, mechanical properties of the shale gas reservoirs can be effectively evaluated.