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Resource Abstract
Enhanced Oil Recovery in the Bakken – Key Observations and Lessons Learned from Laboratory Studies, Modeling, and Field Testing
Date Published:
6/30/2020
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Resource Abstract
A research program was conducted by the Energy & Environmental Research Center (EERC) in partnership with Liberty Resources Management Company LLC (LR), with funding from the North Dakota Industrial Commission (NDIC) through the Bakken Production Optimization Program (BPOP) 2.0 and the U.S. Department of Energy, to examine the potential to use rich gas injection for enhanced oil recovery (EOR) and mitigate flaring. The rich gas EOR pilot test was designed and executed by LR at its Stomping Horse development area in Williams County, North Dakota, from July 2018 through May 2019. A total of 160 million standard cubic feet (MMscf) of rich produced gas was injected into the Bakken petroleum system (BPS) using five different wells in a sequential injection strategy. The test was operated by LR, with regulatory oversight by NDIC. Technical support was provided by the EERC through a series of laboratory-, modeling-, and field-based activities. Laboratory-based examinations of rich gas interactions with reservoir fluids and rocks were conducted, with an emphasis on determining the ability of various rich gas mixtures to mobilize oil in the tight reservoir rocks and shales of the BPS. Iterative modeling of surface infrastructure and reservoir performance using data generated by the various project activities was conducted. Data collected from a variety of reservoir surveillance techniques were analyzed and interpreted.
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