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Tech Report: SAFE-VIS OGS Additive Reduces Lost Circulation by 85% in Gulf of Mexico

Solids-free fluid loss control additive slows fluid losses to 3.5 bbl/h, enabling operator to complete well

SAFE-VIS OGS Additive Reduces Lost Circulation by 85% in Gulf of Mexico

Publication Date: 09/29/2016

A Gulf of Mexico operator perforated a deepwater well using an overbalanced tubing-conveyed perforating (TCP) technique to maintain well control. However, after the well was perforated, it unexpectedly started taking in fluid at a rate of 24 bbl/h. The operator needed to reduce lost circulation and regain well control before it could pull the TCP guns out of hole.

To meet operational and environmental requirements, M-I SWACO proposed using SAFE-VIS OGS additive, a solids-free, viscous pill. In addition to reducing fluid losses into the formation, the additive passed all the required oil, grease, static sheen, and toxicity tests. After treatment with a 20-bbl pill, the measured loss rate dropped from 24 bbl/h to just 3.5 bbl/h, enabling the operator to recover the perforation guns and continue completing the well.




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