North Midcontinent Region - Petroleum Technology News - Second Publication 2004

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Update on CO₂ Pilot in Hall-Gurney Field

In our last newsletter we reported that carbon dioxide injection began December 4, 2003 in the 10-acre pilot pattern in the Lansing-Kansas formation in the Hall-Gurney Field located in Russell County, Kansas. The 10-acre pattern consists of one CO₂ injection well, two producing wells and two water injection (confinement) wells, refer to figure below. To date, the pilot is behaving about as expected.

One semi-trailer of liquid CO₂ is being delivered every other day to the site. Approximately 170 mcfd of CO₂ is being injected into the reservoir. No CO₂ injectivity problems have been encountered. About 20% of the hydrocarbon pore volume of the pilot area has been injected as of August 1, 2004. There has been no decision yet on when to start the water/alternating gas (WAG) phase.

There was no oil being produced from the pilot area when CO₂ injection began. The first consistent oil production occurred at the CO₂ #12 producing well in early March 2004. This well is currently making approximately 2.5 barrels of oil per day. The first appearance of CO₂ breakthrough occurred at the CO₂ #12 in late May 2004. This well is currently making about 12 mcfd of gas (92% CO₂).

 

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