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Oil & gas

Terms concerning oil and gas as a fossil fuel and natural resource.

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polyacrylamide

Oil & gas; Oilfield

A polymer with a high molecular weight. The basic repeating unit or monomer of polyacrylamide is a combination of carbon, hydrogen, oxygen and nitrogen. Polyacrylamides increase ...

depth reference point

Oil & gas; Oilfield

A point within the wellbore from which accurate depth measurements can be made, such as the end of the tubing string, or a nipple or similar completion component.

hydrofluoric acid

Oil & gas; Oilfield

A poisonous liquid acid composed of hydrogen and fluorine. Hydrofluoric acid (HF) is used primarily because it is the only common, inexpensive mineral acid that can dissolve ...

core plug

Oil & gas; Oilfield

A plug, or sample, taken from a conventional core for analysis. Core plugs are typically 1 in. To 1 1/2 in. (2. 5 to 3. 8 cm) in diameter and 1 in. To 2 in. (5 cm) long. Core ...

thread rule

Oil & gas; Oilfield

A pocket-size thread gauge used in field operations to correctly identify or confirm the thread type and size of tubular goods.

barite plug

Oil & gas; Oilfield

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 ...

balanced plug

Oil & gas; Oilfield

A plug of cement or similar material placed as a slurry in a specific location within the wellbore and which has set to provide a means of pressure isolation or mechanical ...