Active standard | Published: 01/07/2023

API RP 13B-2

Field Testing Nonaqueous-based Drilling Fluids, Sixth Edition, Includes Addendum 1 (2025) and Errata 1 (2025)

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API RP 13B-2

Publication date: 01/07/2023

Pages: 164

Country: American technical standard

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Anotation

This recommended practice provides standard procedures for determining the following characteristics of nonaqueous drilling fluids (NADFs):
• drilling fluid density (mud weight);
• viscosity and gel strength;
• filtration;
• nonaqueous fluid (NAF), water, and solids concentrations;
• alkalinity, chloride concentration, and calcium concentration;
• electrical stability (ES);
• lime and calcium concentrations, calcium chloride, and sodium chloride concentrations;
• low-gravity solids and weighting material concentrations;
• sand content;
• high-temperature, high-pressure (HTHP) filtration using the permeability plugging apparatus (PPA). See more

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