API RP 13I
Laboratory Testing of Drilling Fluids, Ninth Edition
standard by American Petroleum Institute, 12/01/2020
Full Description
This standard provides procedures for the laboratory testing of both drilling fluid materials and drilling fluid physical, chemical and performance properties. It is applicable to both water-based and non-aqueous drillingfluids, as well as the base or "make-up" fluid.
It is not applicable as a detailed manual on drilling fluid control procedures. Recommendations regarding agitation and testing temperature are presented because the agitation history and temperature have a profound effect on drilling fluid properties.