Key Takeaways XOM awards EnerMech a key contract to decommission the Hoover-Diana deepwater development. The project includes subsea flushing, pigging, and coiled tubing to retire aging infrastructure. This marks the first large Gulf decom job for EnerMech, boosting its presence in a growing U.S. market.Exxon Mobil Corporation (XOM) has awarded a major deepwater decommissioning contract to integrated energy services provider EnerMech for its 25-year-old Hoover-Diana development in the U.S. Gulf of Mexico, ...