API RP 13B-2 (R2010)
Recommended Practice 13B-2, Recommended Practice for Field Testing of Oil-based Drilling Fluids, Fourth Edition
standard by American Petroleum Institute, 03/01/2005
Full Description
This Recommended Practice provides standard procedures for determining the following characteristics of oil-based drilling fluids:
-drilling fluid density (mud weight);
-viscosity and gel strength;
-filtration;
-oil, water and solids contents;
-alkalinity, chloride content and calcium content;
-electrical stability;
-lime and calcium contents, calcium chloride and sodium chloride contents;
-low-gravity solids and weighting material contents.