Plains CO2 Reduction (PCOR) Partnership (Phase II) Williston Basin Field Demonstration, Northwest Mcgregor CO2 Huff 'n' Puff Regional Technology Implementation Plan (RTIP)
The PCOR Partnership has conducted field and laboratory activities to determine the effects of injecting CO2 into a Williston Basin oil field. The purpose of the activities was to evaluate the potential dual purpose of CO2 storage and enhanced oil recovery (EOR) in carbonate rocks deeper than 8000 ft. Activities were conducted to establish the baseline geologic characteristics of the injection site, determine the effect that CO2 has on the ability of the oil reservoir to store CO2 and produce incremental oil, and evaluate the ability of Schlumbergers reservoir saturation tool (RST) and vertical seismic profile (VSP) technologies to detect a small-volume CO2 plume in a deep carbonate reservoir. One of the primary goals of the PCOR Partnership Phase II Williston Basin Field Validation Test was to evaluate the effectiveness of CO2 for EOR and sequestration in oil fields at depths greater than 8000 ft. To achieve that goal, a CO2 huff n puff test was conducted on a well that is currently producing oil from the Mission Canyon Formation at a depth of approximately 8050 ft in the Northwest McGregor oil field in Williams County, North Dakota. During the test, 440 tons of CO2 was injected into a single well and allowed to soak for 2 weeks, after which the well was put back into production.View/Download Document