This recommended practice provides standard procedures for determining the following characteristics of water-based drilling fluids:
a) drilling fluid density (mud weight);
b) viscosity and gel strength;
c) static filtration;
d) water, oil, and solids contents;
e) sand content;
f) methylene blue capacity;
g) pH;
h) alkalinity and lime content;
i) chloride content;
j) total hardness as calcium;
k) low-gravity solids and weighting material concentrations;
l) static filtration at high-temperature and high-pressure through permeability plugging testing.
