1. Drilling Fluids, Aguamul II Brochure;Anchor,1994
2. Cationic polymer drilling fluid can sometimes replace oil-based mud;Beihoffer;Oil Gas J.,1992
3. Quality Criteria in Selecting Glycols as Alternatives to Oil-Based Drilling Fluid Systems;Bland,1994
4. Laboratory and Field Evaluations of Novel Inorganic Drilling Fluid Additive;Burba,1988