流压计算_如何计算水流量_抽油机泵效

前言：以多相流理论为基础，结合我国油田的具体情况，介绍了一种计算抽油井井底流压的方法。该方法分３段分别考虑抽油井从井底经环空到井口的压力分布情况：从动液面到井口段按纯气控计算；从泵入口到动液面的环空含气油柱段采用零静液流理论计算；从井底到泵入口段采用Ｈａｇｅｄｏｒｎ－Ｂｒｏｗｎ的方法计算。此外，考虑到国内油田对抽油井的产气量往往不测或测不准的实际。情况，以地层油气比为基础，计算泵入口处的自由气量，按油套管截面自由分离和气锚分离计算出环空气流量。流压计算实测资料验证结果表明，该方法的计算精度高于目前普遍采用的Ｓ曲线法。

On the basis of new research results in vertical multiphase flow and taking into account our oilfield conditions,a method for predicting flowing bottom-hole pressure in pumping wells is presented.In the method, fluid flowing is divided into three segements from bottom-hole to suce.The pressure drop in the segement from bottom-hole to pump intake may be predicted by the pressure gradient prediction model in vertical multiphase flow of Hagedorn and Brown, one from pump intake to fluid level predicted with ...

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