Provided complete hydrate blockage remediation support from initial onshore Engineering Assessment to execution planning and eventual successful field execution using nitrogen.

A Gulf of Mexico (GoM) operator in the process of decommissioning one of its fields requested the engineering assessment of a blockage existing in their flowline-riser. The reservoir fluid characteristics and the field’s operational history were extensively reviewed. The review indicated hydrates to be the likely cause of the blockage.

Custom solvent products and flow assurance engineering provide total approach to plugged GoM pipeline.

LiquiGel® pig maps internal pipeline geography and provides target area for remediation pill with no shut-in required.

A West Africa field operator witnessed an abnormal increase in pressure topsides when the flowline circulation pump was used to pump dead oil into the production line. No increase in subsea pressure was observed. Operational history prior to blockage hinted at the possibility of the presence of one or both wax and hydrate blockages in the production line. Depressurization options were limited by the blocked gas lift line.