Optimization of Single-Trip Milling Using Large-Diameter Coiled Tubing

摘要

Larger-diameter coiled tubing (CT) recently has been used to perform millouts because of its improved set-down force and increased annular velocities (AVs) for cleanout purposes. Service companies and operators have reduced the number of wiper trips when using larger-diameter CT, to save time and money. Milling efficiency using 2-in. CT can be dramatically improved by maintaining proper fluid rheology throughout the operation. By doing so, 2-in. CT has been used to perform single-trip millouts, reducing operational time by 40%.