API RP 13B-1
API RP 13B-1: Testing Water-based Drilling Fluids
CDN $418.00
This publication was last reviewed and confirmed in 2026.
Description
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) static 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;
- l) static filtration at high-temperature and high-pressure through permeability plugging testing.
Edition
6
Published Date
2026-01-16
Status
Current
Pages
144
Language
English
Format
Secure PDF
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Abstract
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) static 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;
- l) static filtration at high-temperature and high-pressure through permeability plugging testing.
