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Fatigue Life Analysis of Coiled Tubing in Deep Well Jet Plugging Removal
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作者 Ju Liu Qiao Wang +3 位作者 Wei Zhang Zhihong Zhou Wenzhong Hu Yan Wang 《World Journal of Engineering and Technology》 2023年第1期48-54,共7页
The coiled tubing plugging has become the main means of plugging in gas Wells in Xinjiang. These Wells are deep and have high pressure, which can easily affect the fatigue life of the operating coiled tubing. In order... The coiled tubing plugging has become the main means of plugging in gas Wells in Xinjiang. These Wells are deep and have high pressure, which can easily affect the fatigue life of the operating coiled tubing. In order to improve the life of coiled tubing in high-pressure gas Wells, this paper studies the plugging conditions of coiled tubing in high-pressure ultra-deep Wells. Firstly, the cross section deformation of coiled tubing under high internal pressure is analyzed. Secondly, the factors influencing the fatigue life of coiled tubing and the influence of surface damage on the fatigue life of coiled tubing were studied. Finally, the mechanism of furrow damage caused by coiled tubing and the main measures to reduce furrow damage are analyzed. The following suggestions are made to improve the life of coiled tubing: select the right material and the right size coiled tubing;Use appropriate measures to prevent premature coiled tubing failure and reduce operating costs. 展开更多
关键词 Coiled Tubing Plug Removal by Jetting Fatigue Life plough Surface Damage RESONANCE
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