An oil base fluid can be defined as a drilling fluid which has oil as its continuous or external phase and the water, if present, is the dispersed or internal phase. The solids in an oil base fluid are oil wet, all additives are oil dispersible and the filtrate of the mud is oil. The water, if present, is emulsified in the oil phase.Continue reading “Oil Muds And Its Troubleshooting”
There are several operational indicators and trends from the mud engineer’s daily mud checks and a few special tests that can be used to identify water wetting of oil-mud solids before the problem becomes serious and irreversible.Continue reading “Water-Wet Solids In Drilling Mud”
Oil-based mud is a drilling fluid used in drilling engineering. It is composed of oil as the continuous phase and water as the dispersed phase in conjunction with emulsifiers, wetting agents and gellants. The oil base can be diesel, kerosene, fueloil, selected crude oil or mineral oil. –wiki
Drilling fluids are generally categorized as “water-base” or “oilbase”, and as “weighted” or “unweighted” muds.