[PDF] Applicability Of Carbon Dioxide Enhanced Oil Recovery To Reservoirs In The Uinta Basin Utah eBook
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17 p. report presents the results of compositional simulations of CO2 floods of the Monument Butte Northeast unit and the Glen Bench field. This simulation study is a preliminary investigation of the CO2 enhanced oil recovery (EOR) potential. This study attempts to 1) eliminate the post waterflood incremental oil recovery for the two fields using CO2 injection and water-alternating-gas injection, 2) determine CO2 utilization factors and 3) determine the sequestration potential of EOR for the fields.
Capturing carbon dioxide (CO2) from stationary sources and injecting it into deep underground geologic formations has been identified as a viable method for reducing carbon emissions to the atmosphere. Sedimentary rocks, such as sandstones overlain by shales or evaporites, are the preferred formations because their morphology and structure provide pore space, and containment for the long term storage of CO2. Sandstone formations have also served as repositories to migrating hydrocarbons, and are the sites of many oil recovery operations. For many depleted oil reservoirs, secondary waterflooding recovery methods are no longer efficient or economically viable, hence the application of tertiary CO2 enhanced oil recovery (CO2-EOR) followed by CO2 storage is an attractive and cost effective business plan. Citronelle Oil Field, located in southwest Alabama, is the largest and longest producing sandstone oil reservoir in the state, having produced more than 170 million barrels of oil from its estimated 500 million barrels of original oil in place, since its discovery in 1955. The field is in the later stages of secondary recovery by waterflooding and daily oil production has declined considerably. The field is comprised of the Upper and Lower Donovan hydrocarbon bearing sandstones, which are separated by the saline-water-bearing sandstones of the Middle Donovan. The Ferry Lake Anhydrite, which overlies the three sections, serves as their caprock. The present work is focused on an investigation of the feasibility of a CO2-EOR project for the Citronelle Oil Field and the use of the Middle Donovan for long term CO2 storage. A set of static calculations, based on estimation methods which were retrieved from publications in the field, was followed by computer simulations using MASTER 3.0, TOUGH2-ECO2N, and TOUGHREACT. Results using MASTER 3.0, for simulation of CO2-EOR, indicated that nearly 50 million barrels of additional oil could be produced by tertiary recovery. Results using TOUGH2-ECO2N and TOUGHREACT, for the simulations of CO2 storage, indicated that 159 million metric tons (175 short tons) of CO2 could be stored in the Middle Donovan formation. An investigation into possible CO2 leakage from the reservoirs indicated that the Ferry Lake Anhydrite serves as a very reliable long term storage seal. The present work can serve as a template for preliminary assessment of tertiary oil recovery and CO2 storage of similar oil reservoirs and saline-water formations.
United States. Congress. House. Committee on Natural Resources. Subcommittee on Energy and Mineral Resources
Author : United States. Congress. House. Committee on Natural Resources. Subcommittee on Energy and Mineral Resources Publisher : Page : 88 pages File Size : 37,18 MB Release : 2009 Category : Technology & Engineering ISBN :