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Abstract For years, the need to quickly and accurately determine where drill pipe is free during a stuck pipe event has been critical – in turn leading to a pipe backoff or cut that can either result in successful fishing and continuing to planned TD: or an unsuccessful fishing attempt and side-track. Today, accurate free pipe depth determination is equally important when pulling tubulars as part of workover and plug and abandon (P&A) operations. In both scenarios, high accuracy free-pipe determination methodology enables maximum pipe length to be cut and retrieved out of the well at the first attempt. In a high-pressure, deep-water environment, electric line (e-line) intervention, where well depths exceed 30,000 ft. MD and bottom hole pressures surpass 25,000 psi, operational challenges are intensified by complex completion architectures. A recent Gulf of America operation involved a six-zone, multi-packer completion that had become immobilized due to suspected premature setting of an unknown number of packers at various positions in the bottom hole assembly (BHA) close to total depth (TD). The completion string had an outer diameter between 6 and 7 in. with wall thickness up to 0.8095 in. The inability to differentiate between free versus stuck intervals introduced significant operational uncertainty. Traditional free-pipe detection methods had proven unreliable in this environment, so a different solution was needed. Next-generation pipe recovery technology was selected to carry out a "diagnosis" e-line survey of the downhole completion string, to identify the shallowest packer that had set and determine the free versus stuck zones. This was followed by an electro-mechanical cutter enabling subsequent tubular recovery. It was critical that all technology proposed was rated to 30,000 psi to be able to operate under the extreme downhole pressure near TD. The paper will present a summary of the operation including the high-quality data acquired that clearly and reliably identified the initial free-pipe vs stuck pipe zone due to the shallowest packer that had prematurely set. The initial data acquisition survey was then followed by an electro-mechanical cutter installed with a bespoke no-go to precisely land on the packer profile enabling blade position inside the narrow 8 in. cut window. A controlled cut was performed allowing the BHA to be retrieved to surface. To recover the entire BHA, three more pipe recovery data acquisition trips were completed, each time pin-pointing deeper free versus stuck zones determining the packers that had been set and each time followed by a controlled electro-mechanical cut positioned by bespoke no-go. The operation demonstrated the value of integrating advanced diagnostic sensors and electro-mechanical technologies in a high-pressure, high-debris environment. Key takeaways include the importance of tool diagnostics and adaptive planning in ultra-deep-water interventions. The approach restored wellbore access and ultimately prevented a sidetrack.