In recent years there has been increased usage of coiled tubing (CT) to drill1  shallow wells or to drill laterals from an existing wellbore. Often the weight on bit (WOB) which can be applied with CT is limited due to friction between the CT and the wellbore, preventing some drilling operations and methods from being possible. Two methods proposed to reduce this friction are vibration of the CT and rotation of the CT. This paper presents research that was performed to determine the effectiveness and practicality of these two methods.

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