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 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.

1. a settled volume of barite particles from a barite slurry placed in the wellbore, usually to seal off a pressured zone.
2. a plug made from barite weighting materials that is placed at the bottom of a wellbore. unlike a cement plug, the settled solids do not set solid, yet a barite plug can provide [...]

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.

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 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.

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 [...]

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

See concurrent method

The sodium or potassium salt of a high-molecular weight fatty acid. commonly used in drilling fluids to improve lubrication, emulsification, sample size, and defoaming.

Unit chemical weight of solute per million unit weights of solution. the epm of a solute in solution is equal to the ppm (parts per million) divided by the equivalent weight.

A heavy weight or bar placed on or near a lightweight wireline tool. the bar provides weight so that the tool will lower properly into the well.

A common term for a rig weight indicator. martin-decker is the name of a company.