深层气井井底流压折算方法及其应用

Reduced Method of Down Hole Flowing Pressure for Deep Well and Its Application

针对大庆油田深层气井试井压力计记录的压力存在深度误差这一问题,采用积分叠代方法进行了井底流压折算。为验证理论计算结果的准确性,利用深层气井试井过程中记录的井口油压数据,折算出压力计深度处的压力,与压力计实测流压进行对比分析,确定了该方法的适用范围,并对理论计算和实测压力对比符合较好的深层气井进行了气层中部流压折算,符合较好,为深层气井储层评价和勘探开发提供了依据。

According to depth error of well testing gauge in the deep well of Daqing oilfie ld, using method of reducing down hole pressure by integral itration. To verify its accuracy, using noted well-head oil pressure during well testing process for deep well to reduce pressure at depth of setting gauge. By comparing with press ure of acquired one, the applied scope is determined and the reduced pressure of middle part for better correspondence of theoretical calculation and actual pre ssure is perfect which provides a basis for interpretation and exploration and d evelopment of gas well of deep layer.