Company/Alliance: PCOR, Apache Canada Ltd
Location: Near Zama City, Alberta, Canada
Start Date: 2006
Size: up to 26,000 tonnes of CO2/yr
CO2 Source: Gas Processing: The produced gas contains 5-8% CO2 and 3-13% H2S concentrations; The output gas is 70% CO2 and 30% H2S
Storage: EOR in Zama Keg River oil field at 5000ft depth (Apache plans to develop 9-10 pinnacles at the site for EOR, there are over 800 pinnacles in the oil field)
The Energy & Environmental Research Center (EERC) announced January 2011, that its Plains CO2 Reduction (PCOR) Partnership had been awarded $768,000 from the U.S. Department of Energy to continue research demonstrating the effectiveness of injecting a mixture of carbon dioxide (CO2) and hydrogen sulfide (H2S) for EOR.
Injection of H2S with CO2 removes the need for expensive technology in order to remove the H2S from the CO2. The sulphur was previously stored in large mounds at the surface providing an environmental hazard. Sequestration of H2S reduces this problem. The Mid Devonian Carbonate reef mounds of the Zama oil field, make ideal traps for storing gases. The project is estimated to run for 18 years and store 1.3 MT/CO2 and 0.5 MT H2S. Since December 2006, more than 80,000 tons of acid gas, approximately 74% of which was CO2, has been injected into the Zama oil field 4,900 feet below the ground surface. To date, more than 35,000 incremental barrels of oil have been recovered as a result of the CO2 injection.
Project Link: Apache Zama EOR Project website
Other Sources and Press Releases:
EERC’s PCOR Partnership Demonstrates Ability of Apache’s Zama Project to Reduce GHG (January 2011)
Zama acid gas EOR paper overview [PDF]
PCOR Zama project presentation [PDF]
PCOR poster presentation [PDF] (March 2001)