测试期间地层压力变化的气井产能数据处理方法

A NEW METHOD FOR PROCESSING GAS WELL TESTING DATA WITH THE CHANGE OF FORMATION PRESSURE

试井确定的无阻流量是气井产能建设的重要依据。在气井产能测试期间,地层压力必然会降低。当测试时间间隔较长时,地层平均压力下降更为明显。进行产能数据处理如不考虑这种变化,会导致无阻流量计算偏低。提出了考虑每一测试点地层压力变化的气井产能数据处理方法,实例应用证明了方法的可靠及实用性。

The absolute open flow potential predicted from testing is the basis of gas well producing. The formation pressure will decrease during well testing, when testing time is longer , the decrease of formation pressure will be quicker. The calculated absolute open flow potential will be smaller without considering the change of formation pressure. A new method for processing gas well testing data was studied with considering the change of formation pressure. The results from case study show the new method is practical.