Enerplus Corporation is an energy producer. The Company's capital program is focused on the development of its crude oil and natural gas core areas of operation, which includes its North Dakota and Montana crude oil assets in the Williston Basin, and its natural gas interests in northeast Pennsylvania. Its Canadian crude oil properties production averaged approximately 18,978 barrels of oil equivalent per day (BOE/day). Its Canadian crude oil portfolio includes Mannville producers Medicine Hat Glauconitic, Brooks and Giltedge, as well as Progress (a Boundary Lake producer), all of which are located in Alberta, and Freda Lake/Neptune, located in Saskatchewan and producing from the Mississippian Ratcliffe. Its primary United States crude oil properties are located in the Fort Berthold region of North Dakota and in Richland County, Montana. Its United States natural gas properties primarily consist of its non-operated Marcellus shale gas interests located in northeastern Pennsylvania.