Creative Methanol Injection Line Repair
Date & Time
Wednesday, October 6, 2021, 2:00 PM - 2:30 PM
Chet Molbert

A critical umbilical line that supplies methanol for both flow assurance purposes and SCSSV equalization to the King field ruptured at the top of the pull-in head on the Marlin TLP.  The King field is a 17 mile long subsea tieback to Oxy’s Marlin TLP and the umbilical is a single dedicated 1.5” OD carbon steel AMON tube to supply methanol to the King wells and flowlines.
The location of the failure of the methanol injection line was in a difficult to access location and left only inches of quality umbilical above the pull-in head which presented challenging potentials for repair solutions.  Methanol injection is also critical for flow assurance with longer duration shut-ins and the inability to pump methanol at high enough rates presented critical flow assurance challenges.
The team was able to design and implement a creative solution utilizing an internal slip connector and restore functionality in less than a month while overcoming several execution challenges during the operation.

Location Name
Hall A