The water-alternating-gas wellhead skid includes a spectacle blind, a wedge meter, and a choke.
The Postle field carbon dioxide flood marks the first time anyone in the industry has attempted a major CO2 enhanced oil recovery EOR project at such a late stage in a waterflooded field, according to Mobil Exploration & Producing U.S. Inc. Prior to CO2 injection Postle produced oil with a 98% water cut.
Mobil began injecting CO2 into the Postle on Nov. 15, 1995.
The Postle field, discovered in 1958 in the Oklahoma Panhandle near Guymon, had produced about 92 million bbl of oil under primary and waterflood production. Waterflooding started in 1967.
Oil production peaked at about 22,000 ...