环空测试用俯心井口的研究和发展

Eccentric tubing hangers for the convenience of annulus testing

在环空测试技术中,可转动偏心井口是一关键设备,它解决了在抽油井油、套管环形空间顺利起下下井仪器的多项技术难题。详细介绍了现场常用的几种偏心井口的结构特点和功能,分析了存在的问题,提出了改进意见。

There are certain technical difficulties in tripping the down-hole instruments easily through the tubing-casing annulus. Several kinds of eccentric tubing hangers can resolve these problems. Their design features, functions and schemes for further improvement are introduced in detail.