Linked from
The 9 pages that link to Oil well, each with the reason it gives.
PetroleumBroader topic: Oil wells provide access to petroleum-bearing formations.
Crude oilRelated: Wells provide the pathway from a reservoir to the surface.
Petroleum industryBroader topic: Wells provide access to reservoirs identified during exploration.
BoreholeBroader topic: Oil wells use boreholes to reach petroleum reservoirs.
LandmanRelated: Wells are the physical sites where the series' industry operates.