柿庄南煤层气井压裂效果评价及影响因素分析

目前压裂效果分析通常采用产量评价方法、经济评价方法和裂缝参数计算对比法。其中应用较多的是利用各种数学模型以及测试资料对裂缝几何参数进行计算。首先证实煤层气井压裂后增产效果显著,然后再利用压裂施工曲线获取数学模型计算中需要的参数,对裂缝几何参数(缝长、缝宽)进行计算,优选压裂设计参数,并建立简单可行的裂缝参数计算模型,实际计算表明建立的改进模型提高了裂缝长度、宽度计算的精准率。

An Analysis of the Fracturing Effect and the Influencing Factors in the Case of Coalbed methane wells in Shi Zhuang-nan

The fracturing effect analysis mainly has three methods： production evaluation method, economic evaluation method, and the contrast method of fracture parameters calculation. But nowadays, using various mathematical models and test data to calculate the fracture geometry parameters is the most useful of the three. Use fracturing curve to obtain the required parameters in the mathematical model, calculate the fracture geometry parameters （fracture length, slit width）, and preferably, optimize the fracture design parameters. On this basis, combine the geological factors and the engineering factors, analyze the fracturing parameters affecting factors, in order to provide a basis for the subsequent construction design.