And use the fourthstrengththeory, the axial tension in the coiled tubing under the influence of internal and external pressure from a comprehensive stress of checking.
并利用第四强度理论,对连续油管在轴向拉力与内外压力的作用下的综合应力进行了校核。
2
This paper adopts the fourththeory of strength to decide the maximum depth of tubing pump. A better effectiveness is attained through applying the method in Wenliu Oilfield.