小型压裂测试分析方法在页岩气开发中的应用

页岩气成藏条件、岩性、物性、含气性等差异性特征使得不同页岩具体的开发方案和储层改造技术有很大区别,为正确认识页岩气储层的地质特征、储层参数,在实施改造工艺前有必要进行测试压裂对改造储层进行识别分析。通过对页岩气示范区Z井的测试压裂压降数据进行分析,基于G函数曲线的特征识别,获得了超低渗透页岩储层参数,并结合测井解释结果与岩石物性分析与解释结果进行对比,从现场的角度验证了在页岩气开发方案编制、动态分析以及产能评估等过程使用参数的合理性。测试压裂分析技术可更清楚地认识储层,提高页岩气储层改造的成功率,也给页岩气勘探和开发提供更加有力的依据。

Application of min-frac analysis in the development of shale plays

Different shale gas reservoir has different accumulation conditions , lithologies , physical properties , gas bearing properties, which need particular treatment strategies for individuals. It is necessary to carry out the mini-frac testing before the stimulation to correctly understand the geological information and characteristics . this work provide the shale information thorough the analysis of mini-frac pressure decline data in well Z , based on G-function plot ,which proved the the rationality of the parameters used in development plan,dynamic analysis,and production evaluation . The analysis can evaluates the formation layers accurately, improves the ratio of success, and provides dependency for exploratory and development in shale.