Google search located the term battery used as below in relationship to oil & gas...
Paramount has an interest in 13,580 (13,580 net) acres at Kaybob West. In 1996, a central battery and gath-ering system was built to bring 6 (6 net) oil wells on production. There are 3 (3 net) non-producing oil wellsand 3 (3 net) capped gas wells. Paramount’s net production from this area for oil and natural gas liquidstotalled 378 Bbl/d in 1997