Original sentence: , (1980) Prospects for Oil and gas in the Coos Basin, Western Coos, Douglas, and Lane Counties, Oregon, Oregon Dept.<ref> but none of the wells were completed as producers, and the federal leases expired in 1969.Newton Jr.The OCS P-0130 well drilled offshore Oregon by Union Oil in 1966 was described as having "potentiasl for commercial gas production",<ref>Vernon C.of Geology and Mineral Industries, Oil and gas Investigation 6, p
Edited sentence: The OCS P-0130 well drilled offshore Oregon by Union Oil in 1966 was described as having "potentiasl for commercial gas production", but none of the wells were completed as producers, and the federal leases expired in 1969