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  2. Mud weight - Wikipedia

    en.wikipedia.org/wiki/Mud_weight

    In the oil industry, mud weight is the density of the drilling fluid and is normally measured in pounds per gallon (lb/gal) (ppg) or pound cubic feet (pcf) . [1] In the field it is measured using a mud scale or mud balance. Mud can weigh up to 22 or 23 ppg. A gallon of water typically weighs 8.33 pounds (or 7.48 ppg).

  3. Pore pressure gradient - Wikipedia

    en.wikipedia.org/wiki/Pore_pressure_gradient

    P = 0.052 * mud weight * true vertical depth. taught in almost all petroleum engineering courses worldwide, the mud weight (MW) is expressed in pounds per U.S. gallon, and the true vertical depth (TVD) is expressed in feet, and 0.052 is a commonly used conversion constant that can be derived by dimensional analysis:

  4. Estimated pore pressure - Wikipedia

    en.wikipedia.org/wiki/Estimated_pore_pressure

    In the oil industry, estimated pore pressure is measured in pounds per square inch (psi), but is converted to equivalent mud weight and measured in pounds per gallon (lb/gal) to more easily determine the amount of mud weight required to prevent the fluid or gas from escaping and causing a blowout or wellbore failure.

  5. Drilling fluid - Wikipedia

    en.wikipedia.org/wiki/Drilling_fluid

    Drilling fluids also support portion of drill-string or casing through buoyancy. Suspend in drilling fluid, buoyed by force equal to weight (or density) of mud, so reducing hook load at derrick. Weight that derrick can support limited by mechanical capacity, increase depth so weight of drill-string and casing increase.

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  8. If You Don’t Own a Pressure Washer, Here's Why You Should - AOL

    www.aol.com/lifestyle/don-t-own-pressure-washer...

    $599.00 at amazon.com. WPX3400. The WPX3400 pressure washer from Westinghouse delivers 3400 PSI and 2.6 GPM. It’s powered by a Westinghouse motor, though it has slightly less than a gallon ...

  9. Well control - Wikipedia

    en.wikipedia.org/wiki/Well_control

    Oil companies typically measure density in pounds per gallon (ppg) or kilograms per cubic meter (kg/m 3) ... 0.052 * Mud weight (in ppg) * TVD (in feet)