Chaparral Energy begins CO2 injection at EOR project in North Burbank field


Chaparral Energy begins CO2 injection at EOR project in North Burbank field

OKLAHOMA CITY -- Oklahoma-based independent E&P company Chaparral Energy started injecting CO2 into the North Burbank CO2 EOR Project on June 6, 2013. The state-of-the-art project involved the installation of a CO2 gathering facility at a fertilizer plant in Coffeyville, Kan., the laying of an 8-in., 68-mi CO2 pipeline and the construction of field infrastructure facilities for the injection of CO2 into the North Burbank Unit (NBU). Chaparral is the third-largest CO2 EOR producer in the U.S., based on the number of projects underway.

The largest of 10 active CO2 EOR projects at Chaparral, the NBU represents capital investment to date of nearly $250 million. The company expects total estimated capital expenditure will eventually exceed $1.4 billion over the projected 30-year lifespan, and expects to recover an additional 88 million bbl from the historic NBU in Osage County, Okla., which has already produced in excess of 319 million bbl since its discovery in the 1920s. The NBU is the single largest producing unit in Oklahoma, covering over 23,000 acres.

The pipeline began operation earlier in June, and has the capacity to move up to 60 MMcf of captured CO2 daily. A 23,500-hp compressor station in Coffeyville, Kan., captures the CO2 and then pumps the CO2 through a 68-mi pipeline to the NBU, where it is injected underground into the reservoir. This process uses CO2 to force previously trapped residual oil reserves to a production wellbore for extraction, and will allow additional recovery of approximately 10-15% of the original oil in place.

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