scope:

This part of ISO 10414 provides standard procedures for determining the following characteristics of oil-based drilling fluids:

a) drilling fluid density (mud weight);

b) viscosity and gel strength;

c) filtration;

d) oil, water and solids concentrations;

e) alkalinity, chloride concentration and calcium concentration;

f) electrical stability;

g) lime and calcium concentrations, calcium chloride and sodium chloride concentrations;

h) low-gravity solids and weighting material concentrations.

The annexes provide additional test methods or examples that can optionally be used for the determination of:

- shear strength (Annex A);

- oil and water concentrations from cuttings (Annex B);

- drilling fluid activity (Annex C);

- aniline point (Annex D);

- lime, salinity and solids concentration (Annex E);

- sampling, inspection and rejection (Annex F);

- rig-site sampling (Annex G);

- cuttings activity (Annex H);

- active sulphides (Annex I);

- calibration and verification of glassware, thermometers, viscometers, retort kit cups and drilling fluid balances (Annex J);

- permeability plugging apparatus with set-screw secured end cap (Annex K);

- permeability plugging apparatus with threaded end cap (Annex L);

- elastomer compatibility (Annex M);

- sand content of oil-based fluid (Annex N);

- identification and monitoring of weight-material sag (Annex O);

- oil-based drilling fluid test report form (Annex P).