reservoir | Occidental Petroleum | Reservoir Dogs | Liquefied petroleum gas | King Fahd University of Petroleum and Minerals | Haweswater Reservoir | Quabbin Reservoir | Pymatuning Reservoir | Petroleum industry | Möhne Reservoir | Fewston Reservoir | Dome Petroleum | China University of Petroleum | American Association of Petroleum Geologists | Weare Reservoir | Toledo Bend Reservoir | Swinsty Reservoir | Phillips Petroleum Company | petroleum industry | Natural reservoir | Ministry of Petroleum and Energy | Lindley Wood Reservoir | Iraq Petroleum Company | Happy Valley Reservoir | Glenmore Reservoir | Dana Petroleum | Crystal Springs Reservoir | Battle of Chosin Reservoir | Barker Meadow Reservoir | Bakethin Reservoir |
Most of the oil produced in northwestern Pennsylvania was formed in sandstone reservoir rocks at the boundary between the Mississippian and Devonian rock layers.
It taps reservoirs in the Cretaceous formations of the Western Canada Sedimentary Basin for oil and gas production.