Tests show viability with carbon sequestration and oil recovery

According to a DOE press release, field tests have shown that using carbon dioxide in an oil recovery method dubbed “huff-and-puff” can help assess the carbon sequestration potential of geologic formations while tapping domestic oil resources.

The tests run by the Plains CO₂ Reduction Partnership, one of seven in DOE’s Regional Carbon Sequestration Partnership programs, was unique.

• The depth (approximately 8,050 feet), was among the greatest.
• Pressure (3,000 pounds per square inch) and temperature (180 degrees Fahrenheit) were among the highest.
• The formation was a carbonate rather than clastic reservoir.

In addition to demonstrating the feasibility of combining CO₂ storage along with enhanced oil recovery in carbonate rocks deeper than 8,000 feet, the test displayed effective tools for detecting and monitoring small-volume CO₂ plumes in deep carbonate reservoirs to ensure safe and permanent sequestration.