Case History Discussion: The objective was to displace 17.5 lb/gal diesel oil base mud with filtered 10 lb/gal NaCl completion fluid. This task was to be accomplished utilizing a direct displacement. This would reduce costly disposal fees of additional fluids. Rig-Chem designed a displacement package utilizing specialized surfactants and viscosifiers to clean and water wet…
DetailsCase History Discussion: The objective was to displace the wellbore in a two stage displacement. Displacing the riser first then displacing the wellbore. Removing the 12 lb/gal synthetic base mud from wellbore and riser separately and replacing with filtered 9.2 lb/gal CaCl2 completion fluid. Rig-Chem designed a displacement package utilizing specialized surfactants and viscosifiers to…
DetailsIntroduction: Customer approached Rig-Chem; riser retrieval during disconnects were costing additional rig time and compromising safety issues due to excessive mud left on riser walls. Customer challenged Rig-Chem for a solution to remove mud from the riser walls using chemicals, while not adding any mechanical steps or increasing rig time. Wellbore Information Rig Semi-Submersible Water…
DetailsCase History Discussion: The objective was to displace the wellbore in a direct displacement. Removing the 11.3 lb/gal synthetic base mud from wellbore and riser in one circulation and replacing with filtered 11.2 lb/gal NaBr completion fluid. Rig-Chem designed a displacement package utilizing specialized surfactants and viscosifiers to clean and water wet all surfaces. The…
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