当抽油机井环空中出现泡沫段时,将会失去明显的油-气界面。这时用回声测深法所测得的液面实际上是反映了泡沫段顶部的深度,从而使折算的井底压力偏大。本文介绍了应用物质平衡原理测试抽油机井环空拟液面深度和折算井底压力的一种新方法。它对于有泡沫段和没有泡沫段的井来说,都同样适用。 When a foam section appears in the annulus of the pumping well, a significant oil-air interface will be lost. At this moment, the liquid level measured by echo sounding actually reflects the depth of the top of the foam section, so that the converted bottom hole pressure is larger. In this paper, a new method of testing the annular depth of the sucker rod wells and the conversion of bottomhole pressure using the principle of material balance is introduced. It also applies to wells with and without foam.