The main objective of running an EMDS log in this well was to identify the location of leak path in the 7.00” scab liner (log done during hoist intervention after 7.00” scab liner pressure test failure).
The well completion design across the logging interval was 7.00” scab liner, 9 5/8” casing and 13 3/8” casing. The Log result showed that the 7.00” scab liner had a hole basically caused by corrosion initiating externally from 13 3/8” casing, through, 9 5/8” casing. This was clear as that area had large zones of extensive corrosion. Based on log result, decision was taken to remove scab liner and run new one. Physical inspection of scab liner when pulled to at the surface confirmed log result.