Subsea flowline hydrate remediation

Challenge

• Hydrate in the flowline prevented the well from being able to flow to the production facility
• The customer estimated that we needed to remove 650 bbls of fluid to reduce the flowline pressure enough to disassociate the hydrate
• A traditional ROV Subsea pump was envisioned but due to the volumes needed to be removed it was decided that an alternate method would be needed

Solution

• A unique combination of a stimulation manifold, along with CT downlines was suggested to produce a continuous gas lift system and remove fluid from the line

Result

• This configuration was able to remove a total of 850 bbls of fluid and remove the hydrate
• Equipment configuration enabled reduced NPT due to our larger weather operating window