Because of these characteristics, the pressure measurement system with capillary tubing can be used without depth limit and can measure the downhole pressure continuously without time limit.
由于这些特点，毛细管测压系统在使用时无深度限制，可以不受时间限制连续地测取井下压力。
2
This paper adopts the fourth theory of strength to decide the maximum depth of tubing pump. A better effectiveness is attained through applying the method in Wenliu Oilfield.
文章采用第四强度理论来确定最大下泵深度，并在文留油田的应用中取得了较好的效果。
3
A coiled tubing string is generally used to apply the treatment, which involves running to depth while pumping high-pressure nitrogen gas.