The handover between drilling and production is where completions are won or lost. NEXA Energy and Support Services delivers engineered wellbore clean-up for onshore, offshore and deepwater wells across Nigeria, leaving you with clean casing, clear brine and protected completions.
One Engineered Displacement Programme
We combine mechanical and chemical workstreams in a single programme designed for your casing configuration, mud system and completion fluid. The result is one plan, one accountable supervisor and one set of acceptance criteria.
Mechanical Clean-Out
We run clean-out tools to remove debris from the casing wall:
- Casing scrapers remove mud cake and cement sheath
- Brushes scour residual solids from the casing ID
- Magnets collect metal swarf and ferrous debris
- Junk baskets capture loose junk ahead of completion
Chemical Displacement
An engineered spacer and pill train displaces the drilling fluid and leaves the casing water-wet, ready for completion brine:
- Push pills to lead the displacement
- Surfactant spacers to strip oil or synthetic based films and water-wet the casing
- Viscous spacers to sweep solids and maintain interface separation
Designed and Supervised On Site
NEXA engineers design the programme, including pill volumes, sequence, pump rates and returns criteria. They then supervise execution at the wellsite until returns meet specification.
Part of the Spud-to-Handover Package
Wellbore clean-up connects directly to drilling fluids engineering and completion fluid filtration. When one contractor manages all three, the displacement is designed around the actual mud in the hole and the brine is filtered to spec as it goes in.