Oil & Gas Glossary 1.0

2. any group of oilfield workers.

The oil company in charge of development and production in an oilfield in which several companies have joined to produce the field.

A nitrile rubber used throughout the oilfield as an elastometer seal, i.e., in O-rings, V-rings.

A circular seal common in the oilfield; requires deformation (squeeze) to energize and seal.

A tapered connection with 8 threads per inch. One turn equals 0.125 inches of travel. Very common oilfield connection.

A long, hollow cylinder, usually steel, through which fluids are conducted. Oilfield tubular goods are casing (including liners), drill pipe, tubing, or line pipe

The surface area overlying an oil reservoir or reservoirs. The term usually includes not only the surface area, but also the reservoir, the wells, and the production equipment.

Any kind of pipe. Oilfield tubular goods include tubing, casing, drill pipe, and line pipe. Also called tubulars.

A working shift for drilling crew or other oilfield workers. The most common tour is 8 hours; the three daily tours are called daylight, evening (or afternoon), and graveyard (or morning). Sometimes 12-hour tours are used, especially on offshore rigs; they are called simply day tour and night tour.

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.