Distributed Temperature Sensing Using Tapered Monobore Completion for Extended Reach Wells

Abstract The oil industry faces several challenges when performing Lower Completions in Extended Reach Wells (ERW), such as increased friction factor, higher tortuosity, and so on. The introduction of Tapered Monobore Completion (TMC) for Extended Reach Wells (ERW) marks a significant advancement in the field of reservoir development. This paper explores the process of design and benefits of TMC, particularly in conjunction with Distributed Temperature Sensing (DTS) technologies and Limited Entry Liner (LEL) stimulation technique, to enhance production rates, reduce operational costs, and improve reservoir management. A new method was devised after several trials of running Distributed Temperature Sensing (DTS) Completions in longer horizontal wells with conventional 3-1/2″ completion in horizontal hole section. The Monobore Completion was adjusted to a tapered 4-1/2″ + 3-1/2″ in horizontal hole and the number of swell packers was reduced. DTS completion with carrier using Limited Entry Liner (LEL) was deployed with a length of more than 6350 ft in a carbonate reservoir in the Middle East. Various simulations of torque and drag analysis were performed to determine the optimal configuration of the Tapered Monobore Completion. After the first successful design and deployment of a well in the long horizontal hole, two more wells have been finished and more are planned in other reservoirs of the Field. Also, the Tapered Monobore Completion design is being considered for other Fields in the same area. The successful deployment sets a standard for best practices and improvements in well completion. It shows that TMC can work in ERW and can greatly affect operational efficiency and cost-effectiveness. The results and methods from this project are expected to shape future designs and operations, helping the oil and gas industry's skills in reservoir use and management. Combining Tapered Monobore Completion with DTS systems gives operators real-time reservoir monitoring abilities. This combination helps operators make informed choices for reservoir management, possibly increasing hydrocarbon recovery through accurate and timely actions. TMC has a streamlined design that needs fewer parts and less time to install, making it more affordable than conventional completion methods. This lower cost is helpful not only in the immediate term but also for the long-term profitability of well operations. The Monobore design is simple and allows for easier access for well interventions and maintenance. This access is crucial for reducing the time and costs of these operations, and improving operational efficiency.