Fundamentals And Techniques of coiled tubing drilling CTD

Abstract

This thesis explores the fundamentals, techniques, and optimization strategies related to Coiled Tubing Drilling (CTD), an innovative drilling method that has emerged as a cost-effective and efficient alternative to conventional rotary drilling in specific well conditions. The study begins with a detailed explanation of CTD principles and system components, followed by an analysis of the various applications such as underbalanced drilling, horizontal drains, and well re-entry operations. Emphasis is placed on the operational advantages of CTD, including continuous circulation, minimal surface footprint, and reduced non-productive time (NPT). A real field case is examined to highlight practical challenges and successful optimization strategies. The thesis concludes by offering technical recommendations and future perspectives for enhancing CTD performance.