Extended‑reach wells are critical to modern field development, and deep‑well sidetracking continues to grow as operators optimize reservoir contact. In Qatar, as part of a production enhancement campaign, the customer encountered a unique technical challenge: the specialized well design restricted weight‑on‑bit transfer within the extended‑reach horizontal section. This constraint created difficulties in both achieving the required sidetrack window placement and releasing the milling assembly when using conventional set‑down weight solutions. Close collaboration between the operator and the Wellbore Integrity Solutions (WIS) team in Qatar led to the development of a tailored, technically robust solution.

WIS performed a comprehensive torque and drag analysis to define the true operational limits and engineer an optimized modular assembly. The resulting solution enabled the TrackMaster Select™ whipstock system to be conveyed to the target depth, hydraulically set, and disengaged using upward overpull rather than weight‑down. The modular design featured a customized retrievable packer to allow full recovery from the well. The milling assembly incorporated an integral tri‑mill configuration capable of milling the window and drilling the 11‑ft rat hole in a single run.

WIS successfully executed the 9-5/8” cased‑hole sidetrack, allowing the customer to meet all well objectives. The innovative approach enabled accurate whipstock setting at the planned depth, reliable disengagement of the tri‑mill assembly via overpull, and smooth passage of the directional assembly through the window. The whipstock was later recovered using a hook‑retrieval tool, completing the sidetrack without the need for remedial trips. The operation delivered three days of rig‑time savings while ensuring operational efficiency and wellbore integrity.