Abstract Objectives/Scope: The latest developments in well construction demand equipment that defies the current industry limits to access the full length of the pay zones in 40,000+ ft wells. With the growing trend of drilling horizontal wells in the mega reach category and beyond, there is a need for a new level of engineering design of Coiled Tubing (CT) strings and downhole technology with a specific approach to reach these new and expanding requirements. Methods, Procedures, Process: Extended reach conveyance of CT is a challenge that service companies and operators have progressively addressed as wells are drilled deeper into the mega reach area. Advanced CT string designs and materials, as well as systematic variations of parameters affecting friction coefficients between CT and wellbore completions, provide benefits to operators in extending the reach of the horizontal sections. Special downhole tools and engineering testing are required to plan the best outcome from the available downhole force technology to increase wellbore coverage while maintaining well underbalance, reducing operational footprint, and safely deploying the heaviest 40,000 ft 2-3/8 in CT pipe offshore. Results, Observations, Conclusions: This paper describes the systematic process used to address the mega reach challenges, as CT is required to reach Total Depth (TD) in wells longer than 40,000 ft in one offshore oil field in Abu Dhabi. It summarizes the considerations taken to design the right string for the project and describes the multiple technologies used to extend the reach of the CT in the horizontal sections while remaining underbalanced. Additionally, this paper discusses the implementation of a surfactant-based Friction Reducer (FR) system to extend the CT reach and the friction matching analysis performed while calculating the extended lock-up depth. In addition, the special transportation solutions to deploy the CT reel to the wellhead are discussed, along with the track stack required to make these operations possible. Novel/Additive Information: Detailed data collected throughout the campaign enabled the operating company and the service company to benchmark the results of the operations, drawing better conclusions well after well and enabling a positive loop of improvement leading to economic gains as the campaign was executed. Technical challenges, downhole tools, and fluid solutions to reach TD Transportation solutions for mega reach CT string deployment