【摘要】 涪陵页岩气田多采用多级压裂分段射孔方式完井,气藏开发与管理者迫切需要了解各层段的产出情况,产出剖面测试是获取各层段产出情况最为直接的方法。对于生产稳定的水平井,水平段可以划分为两个射孔簇之间的管流段以及射孔簇位置的射孔段。在全井所有的管流段、射孔段分别应用管流能量方程、射孔簇流体流入能量守恒方程,从而建立全井的产出剖面的解释模型。根据某页岩气井的沿水平段所测温度、压力等数据,选择相应的地质参数、井眼轨迹等,应用全井的产出剖面的解释模型,通过调用MATLAB的lsqnonlin函数,求解模型方程组,实例计算结果显示能够满足工程应用的要求。可见利用温压测试可实现水平井产出剖面的定量计算。更多还原

【Abstract】 In Fuling shale gas field, multistage fracturing and staged perforation are often used to complete well. The gas reservoir development and management need to know the production of each section. The output profile test is the most direct method to obtain the output of each section. For the horizontal well with stable production, the horizontal section can be divided into the pipe flow section between two perforation clusters and the perforation section at the perforation cluster position. The energy conservation equations of pipe flow and inflow fluid in perforating cluster were applied to pipe flow sections and perforation sections respectively in the whole well. Then the interpretation model of the whole well output sections was established. The temperature, pressure, well trajectory and other data were measured along the horizontal section of a shale gas well. And the corresponding geological parameters were selected. The interpretation model of the whole well production profile was applied, and the model equations were solved by calling the lsqnonlin function of MATLAB. The example calculation results show that the model can meet the requirements of engineering application. It is concluded that the quantitative calculation of horizontal well production profile can be realized by using temperature and pressure test.更多还原