Oil & gas

Oil & gas

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

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Oil & gas > Oilfield

repeatability

Oil & gas; Oilfield

The closeness of agreement between independent results obtained in the normal and correct operation of the same method on identical test material, in a short space of time, and ...

cresting

Oil & gas; Oilfield

The change in oil-water or gas-oil contact profiles as a result of drawdown pressures during production. Cresting occurs in horizontal or highly deviated wells and is affected by ...

liquefied natural gas

Oil & gas; Oilfield

Natural gas, mainly methane and ethane, which has been liquefied at cryogenic temperatures. This process occurs at an extremely low temperature and a pressure near the atmospheric ...

lean gas

Oil & gas; Oilfield

Natural gas that contains a few or no liquefiable liquid hydrocarbons. Lean gas is also called dry gas.

sweet gas

Oil & gas; Oilfield

Natural gas that does not contain hydrogen sulfide (H 2 S) or significant quantities of carbon dioxide (CO 2 ).

injection gas

Oil & gas; Oilfield

Natural gas injected into a formation to maintain or restore reservoir pressure. Other reasons for gas injection are gas-lift operations, cycling in gas-condensate reservoirs or ...