1. n. [Geology]
The phase that occurs after successful exploration and development and during which hydrocarbons are drained from an oil or gas field.
See: appraisal, development, exploration, licensing round, retrograde condensation, scout, scout ticket, subsalt, time-lapse seismic data, underpressure, virgin pressure
2. n. [Geophysics]
A measure of the efficiency of seismic acquisition. Production can be expressed in terms of the number of lines, shots or lengths (km or miles) of data acquired in a given time.