Basic Equations
1.0 Terminology
The term density as used in USCS/British oil field terminology is a slang term for a value that is actually specific weight. Specific weight is in the units of lb/ft3 or lb/gallon (ppg). Actual density in the USCS/British would be the specific weight term divided by 32.2 ft/sec2 and would result in a USCS/British density of slug/ft3. Neither the density term nor the actual density term is used in this book. This book uses the term mud weight (MW) for specific weight (lb/ft3or ppg). Density is used only when referring to the SI-metric values of kg/m3, kg/liter, and gram/cm3 (which are actual density values in that unit system) and for the term ECD.
1.1 Mud Weight MW (lb/ft3), Mud Weight MW (ppg), and Specific ...
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