1. n. [Production Testing]

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

Alternate Form: dry gas

See related terms: liquid hydrocarbons,  natural gas

2. n. [Production Testing]

Residual gas, mainly methane and ethane, that remains after the heavier hydrocarbons have been condensed in the wellhead. When the lean gas is liquefied, it is called liquefied natural gas (LNG).

See related terms: liquefied natural gas,  LNG