Center Director
Oregon Water Science Center
Email:
jothamke@usgs.gov
Office Phone:
971-710-9782
ORCID:
0000-0002-6917-1946
Location
Moda Tower
601 SW 2nd Ave
Portland
, OR
97204
US
Supervisor:
Jill B Rolland
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The Williston Basin is an intracratonic basin that underlies portions of Montana, North Dakota, and South Dakota in the United States, and Manitoba and Saskatchewan in Canada. The Williston Basin has been a top domestic oil producing region since the 1960s and is currently in the midst of a major “oil boom” triggered by the discovery of substantial reserves associated with the Devonian-Mississippian Bakken Formation, along with advances in petroleum-recovery technologies and economic incentives related to the price of oil.
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One of the largest conventional oil reservoirs in the United States, the Permian Basin, is becoming one of the world’s largest continuous oil and gas producing reservoirs. Continuous, or horizontal well drilling techniques extract oil and gas by directionally drilling and hydraulically fracturing the surrounding reservoir rock. The continuous extraction of oil and gas using hydraulic fracturing requires large volumes of water, and estimates of the total water volume used in the Continuous Oil and Gas (COG) extraction technique, requires a comprehensive assessment to determine the amount of water needed to extract reservoir resources. This data release contains the input and output files utilized for the assessment...
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Groundwater, surface water, and soil in the Goose Lake oil field in northeastern Montana have been affected by Cl-rich oil-field brines during long-term petroleum production. Ongoing multidisciplinary geochemical and geophysical studies have identified the degree and local extent of interaction between brine and groundwater. Fourteen samples representing groundwater, surface water, and brine were collected for Sr isotope analyses to evaluate the usefulness of 87Sr/86Sr in detecting small amounts of brine. Differences in Sr concentrations and 87Sr/86Sr are optimal at this site for the experiment. Strontium concentrations range from 0.13 to 36.9 mg/L, and corresponding 87Sr/86Sr values range from 0.71097 to 0.70828....
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The Williston Basin, in north-central United States and south-central Canada, has been a leading source of domestic oil and gas production for more than 50 years. This region, which includes parts of Montana, North Dakota, South Dakota, Saskatchewan, and Manitoba, is currently in the midst of a modern energy boom driven by advances in oil and gas production technologies. The main energy-producing formations associated with the current boom are the Bakken and Three Forks. A portion of the Williston Basin is overlain by the Prairie Pothole Region (PPR), which is known for its depressional wetlands that provide critical breeding and nesting habitats for a majority of North America’s migratory waterfowl as well as habitat...
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Brine contamination of groundwater in the East Poplar oil field was first documented in the mid-1980s by the U.S. Geological Survey by using hydrochemistry, with an emphasis on chloride (Cl) and total dissolved solids concentrations. Supply wells for the City of Poplar are located downgradient from the oil field, are completed in the same shallow aquifers that are documented as contaminated, and therefore are potentially at risk of being contaminated. In cooperation with the Office of Environmental Protection of the Fort Peck Tribes, groundwater samples were collected in 2009 and 2010 from supply wells, monitor wells, and the Poplar River for analyses of major and trace elements, including strontium (Sr) concentrations...
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