Heat transfer of nucleate boiling of water and n-hexane in a vertical cylindrical annulus with inner side heated has been experimentally investigated.
以水和正己烷作为介质，考察了通入空气对内管加热的竖直圆柱形环隙内的沸腾传热性能的影响。
Structural character, working principle and main technical specification of WJ-1 new type through annulus logging tool used to measure production water cut has been introduced in this paper.
文中介绍了WJ 1型过环空新型产液剖面测井仪的结构特点、工作原理以及主要技术指标。
Moreover, the wellbore annulus pressure increased with the increasing of invaded formation water quantity. but the amplitude is not obvious.
此外，井筒环空压力也随着地层水侵入量的增加而增大，但增幅不明显。
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