API RP 13B-2 : 2014

1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols and Abbreviations
5 Determination of Drilling Fluid Density (Mud Weight)
6 Alternative Method for Determination of Drilling Fluid
   Density
7 Viscosity and Gel Strength
8 Static Filtration
9 Retort Test for Oil, Water, and Solids Concentrations
10 Chemical Analysis of Oil-based Drilling Fluids
11 Electrical Stability Test
12 Lime, Salinity, and Solids Calculations
Annex A (informative) - Measurement of Shear Strength Using
        Shearometer Tube
Annex B (informative) - Determination of Oil and Water Retained
        on Cuttings
Annex C (informative) - Determination of Aqueous-phase Activity
        of Emulsified Water Using an Electro Hygrometer
Annex D (informative) - Determination of Aniline Point
Annex E (informative) - Lime, Salinity, and Solids Calculations
Annex F (informative) - Sampling, Inspection, and Rejection of
        Drilling Materials
Annex G (informative) - Rig-site Sampling
Annex H (informative) - Determination of Cuttings Activity by
        the Chenevert Method
Annex I (informative) - Chemical Analysis of Active Sulfides
        by the Garrett Gas Train Method
Annex J (informative) - Calibration and Verification of
        Glassware, Thermometers, Viscometers, Retort
        Kit Cup, and Drilling Fluid Balances
Annex K (informative) - High-temperature/High-pressure
        Filtration Testing of Drilling Fluids Using the
        Permeability-plugging Apparatus (PPA)
Annex L (informative) - Compatibility of Elastomeric
        Materials with Non-aqueous-Based Drilling Fluids
Annex M (informative) - Sand Content Procedure for Non-aqueous
        Fluids
Annex N (informative) - Identification and Monitoring of
        Weight-material Sag
Annex O (informative) - Oil-based Drilling Fluid Report Form
Bibliography

Gives 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.