Base oil for well fluids having low pour point temperature
Bentonite nodules
Biodegradable drilling mud and process for its preparation
Biodegradable surfactant for invert emulsion drilling fluid
Biopolymer/oil suspension compositions utilized in aqueous-based
Blended drilling fluid thinner
Blends of glycol derivatives as gas hydrate inhibitors in water
Borehole fluid containing a lubricating...
Borehole treating substance containing ether carboxylic acids
Borehole treatment agent containing low-toxic oil phase
Brine fluids having improved rheological charactersitics