In recent years, coiled tubing has become the product of choice for completing horizontal wells in unconventional resource plays. In these applications, service companies and operators have found that fatigue life performance of the tubing sometimes varies significantly from the life predicted using conventional fatigue models.

In particular, users have found that bias welds in certain portions of the string sometimes fail before their predicted safe working life. To address this issue, Global Tubing has introduced SMARTaperR, a patentpending coiled tubing product designed to extend fatigue life and improve safety in unconventional resource development.

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