Ppg; a measure of the density of a fluid (such as a drilling mud).

A measure of the density of a drilling fluid expressed as pounds per gallon, pounds per cubic foot, or kilograms per cubic meter. mud weight is directly related to the amount of pressure the column of drilling mud exerts at the bottom of the hole.

An instrument near the driller’s position on a drilling rig that shows both the weight of the drill stem that is hanging from the hook (hook load)

To increase the weight or density of drilling fluid by adding weighting material.

An instrument installed in the mud pits that has a recorder mounted on the rig floor to provide a continuous reading of the mud weight.

Weight per unit volume of drilling fluid usually expressed in pounds per gallon or pounds per cubic foot. see hydrostatic pressure.

The rights of ownership, conveyed by deed, of gas, oil, and other minerals beneath the surface of the earth. in the united states, mineral rights are the property of the surface owner unless disposed of separately.

The sum of the atomic weights in a molecule. for example, the molecular weight of water is 18, because the atomic weight of each of the hydrogen molecules is 1 and the atomic weight of oxygen is 16. see mole

The unit weight of fluid, e.g., pounds per gallon.

The atomic or formula weight of an element, compound, or ion divided by its valence. elements entering into combination always do so in quantities proportional to their equivalent weights.

The mass or weight of a substance per unit volume. for instance, the density of a drilling mud may be 10 pounds per gallon (ppg), 74.8 pounds per cubic foot (lb/ft), or 1,198.2 kilograms per cubic meter (kg/m3). specific gravity, relative density, and api gravity are other units of density.

1. barium sulfate; a mineral frequently used to increase the weight or density of drilling mud. its relative density is 4.2 (or 4.2 times denser than water). see barium sulfate, mud.
2. weighting material with a specific gravity of 4.37 used to increase the apparent density of a liquid drilling fluid system. barite [baso4] is the [...]

A drilling mud that contains entrained formation gas, giving the mud a characteristically fluffy texture. then entrained gas in not released before the fluid returns to the well, the weight or density of the fluid column is reduced. because a large amount of gas in mud lowers its density, gas-cut mud must be treated to [...]

A sedimentary rock composed of individual mineral grains of rock fragments between 1/16 and 2 millimeters in diameter and cemented together by silica, calcite, iron oxide, and so forth. sandstone is commonly porous and permeable and therefore a likely type of rock in which to find a petroleum reservoir.

See concurrent method