Arizona's Holbrook CO 2 area may hold oil, gas reserves

G. Alan Petzet Exploration Editor Oil seeps from the Devonian Martin formation in 17-11n-10e, Gila County, 7 miles northwest of Payson, Arizona. A Core Laboratories analysis showed a Devonian sample to have 17% porosity and 34 md permeability. [16,337 bytes] East-central Arizona's Nascent producing area [29,047 bytes] Discovery of carbon dioxide and nitrogen near St. Johns, Ariz., in 1994 made news as a possible CO2 source for enhanced oil recovery. Drilling of 10 appraisal and exploratory wells this year appears to have established production capacity on two anticlines other than the one on which the 1994 discovery well was drilled. A second op...

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