Based on the principle of mass balance, the Pseudo-Level Depth Finder can attain the true level by testing annular gas rate. 根据物质平衡方法设计的拟液面测试仪,可通过测试油井环空排气量来确定油井的真实液面。
Testing the Well Pseudo-Level in Annular Space by Application of Mass Balance 应用物质平衡方法测试抽油井的环空拟液面