1. Report of special sub-committee on corrosion fatigue of drill pipe. Proc. API Prod. Bull. 224, 109–135.
2. Recommended Practice for Testing Foaming Agents for Mist Drilling. API RP 46, first ed. API Division of Production, Dallas.
3. API Bulletin on Drilling Fluids Processing Equipment. API Bull. 13C, first ed. API Division of Production, Dallas.
4. Standard Procedure for Testing Drilling Fluids. API RP13B, seventh ed. API Division of Production, Dallas.
5. Oil base drilling fluids often boost production;Alexander;Oil Weekly,1944