API RP 13B-1

Annotation of standard text API RP 13B-1 :

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) 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.

Annexes A through K provide additional test methods that may be used for: chemical analysis for calcium, magnesium, calcium sulfate, sulfide, carbonate, and potassium; determination of shear strength; determination of resistivity; removal of air; drill-pipe corrosion monitoring; sampling, inspection, and rejection; rig-site sampling; calibration and verification of glassware, thermometers, timers, viscometers, retort cup, and drilling fluid balances; permeability plugging testing at high temperature and high pressure for two types of equipment; sag testing. See more