The ability of a substance to be deformed without rupturing.

Usually paraformaldehyde.

Any material used to prevent starch or any other substance from fermenting through bacterial action.

A substance that consists of large molecules formed from smaller molecules in repeating structural units (monomers).

In oilfield operations, various types of polymers are used to thicken drilling mud, fracturing fluid, acid, water, and other liquids.

See micellar-polymer flooding, polymer mud.

In petroleum refining, heat and pressure are used to polymerize light hydrocarbons into larger molecules, such as those that make up high-octane gasoline.

In petrochemical production, polymer hydrocarbons are used as a feedstock for plastics.

A blowout preventer that uses pipe rams as the closing elements.

See pipe ram.

Equipment operated hydraulically or by compressed air for making up and breaking out drill pipe, casing, tubing, and rods.

In general, the term “pool” is synonymous with the term “reservoir”; however, in certain situations, a pool may consist of more than one reservoir.

Abbreviation: pull-out-of-hole

An auxiliary part (such as a coupling, elbow, tee, or cross) used for connecting lengths of pipe.

A method of predicting behavior of mud

A loss of pressure that results from friction sustained by a fluid passing through a line, valve, fitting, or other device.

Tongs that are actuated by air or hydraulic fluid and are used for making up or breaking out sucker rods

Abbreviation: pounds per gallon.

A gelled viscous fluid

A device for maintaining pressure in a line, downstream from the value.

Slang for gas separator.

See poor boy.