Problem
A West-Texan operator discovered excessive casing wear across seven wellbores and raised concerns around the mechanical integrity. Given plans to frac were imminent, Coretrax was mobilized to minimize the risk of casing collapse.
Solution & Achievements
A total of seven wells were selected to patch before beginning frac operations. The ReLine MNS was selected as the ideal solution, given its ability to set an expandable liner across more than 300ft of worn casing in a single trip, without requiring a shoe to mill-out. Additionally, the 3-7/8” expandable pipe has a much larger ID than conventional solutions.
Increasing time efficiencies was critical to the success of the client’s drilling programme, with any delay likely to result in the frac itself being postponed, incurring significant cost to the operator. Close collaboration allowed Coretrax to mobilize the relevant crew and equipment to the rig site to repair the seven wellbores. After each well was patched, the rig moved immediately to the next well and began operations. The patch's ratings were designed to withstand potential frac hits, avoiding unnecessary cleanouts required on wells spaced in close proximity.
Compared to conventional solutions the ReLine MNS provided an increased ID, allowing the operator to use larger mills to drill out composite plugs deeper in the wellbore.
As a result of this successful operation, and Coretrax’s ability to adapt to strict operational timelines, the client has planned several additional multi-well programs.
