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Subsea Flowline Hydrate Remediation
DOWNLINES CASE STUDY

Subsea Flowline Hydrate Remediation

Halliburton uses coiled tubing downlines to remove 650 bbls of fluid to reduce the flowline pressure enough to disassociate the hydrate in the flowline.

Opportunity

Deep Water

Opportunity
Specific Challenge

Subsea intervention to remove the hydrate and increase production

REGION

Gulf of Mexico

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

850

bbls of fluid removed

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