120f97be_Sources__and_Explanatory_Notes__Key_Terms
[Definition] The reserves credited to a reservoir because of enlargement of its proved area. Normally the ultimate size of newly discovered fields, or newly discovered reservoirs in old fields, is determined by wells drilled in years subsequent to discovery. When such wells add to the proved area of a previously discovered reservoir, the increase in proved reserves is classified as an extension. [Key Terms] 
Extensions
A c q u i s i t i o n s
A d j u s t m e n t s
D r y N a t u r a l G a s
E x t e n s i o n s
N e w F i e l d D i s c o v e r i e s
N e w R e s e r v o i r D i s c o v e r i e s i n O l d F i e l d s
P r o d u c t i o n o f N a t u r a l G a s , D r y
P r o v e d R e s e r v e s
R e v i s i o n s
S a l e s
Table Definitions, Sources, and Explanatory Notes
Key Terms