挠性油管在缠绕过程中的大部分的应变能都被耗散掉(转化成热)，只有一小部分应变能可以恢复。
Only a small part of the total strain energy is recovered. The recovered energy is the elastic energy that is stored during reeling.
分析了挠性油管的性能及其使用寿命的影响因素，并对挠性油管在使用过程中出现的各种破坏机理进行了探讨。
The factors that have influences on coil tubing properties and service life were analyzed, and the mechanism of failure of coiled tubing are discussed.
在井筒中被卡住的油管柱或挠性管柱能够自由移动的深度。
The depth at which a tubing or coiled tubing string that is stuck in the wellbore is free to move.
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