API RP 13B-2
API RP 13B-2: Field Testing Oil-based Drilling Fluids (Not Current)
CDN $388.00
This publication was last reviewed and confirmed in 2025.
Description
This recommended practice 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 sulfide (Annex I);
Edition
6
Published Date
2025-04-09
Status
Not Current
Pages
180
Language
English
Format
Secure PDF
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Abstract
This recommended practice 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 sulfide (Annex I);
