Mark A Engle (Former Employee)
Science and Products
Filter Total Items: 64
Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota
Wastewaters from oil and gas development pose largely unknown risks to environmental resources. In January 2015, 11.4 M L (million liters) of wastewater (300 g/L TDS) from oil production in the Williston Basin was reported to have leaked from a pipeline, spilling into Blacktail Creek, North Dakota. Geochemical and biological samples were collected in February and June 2015 to identify...
Authors
Isabelle M. Cozzarelli, Katherine Skalak, D.B. Kent, Mark A. Engle, Adam J. Benthem, Adam Mumford, Karl B. Haase, Aida M. Farag, David Harper, S. C. Nagel, Luke R. Iwanowicz, William H. Orem, Denise M. Akob, Jeanne B. Jaeschke, Joel M. Galloway, Matthias Kohler, Deborah L. Stoliker, Glenn D. Jolly
Quantifying chemical weathering rates along a precipitation gradient on Basse-Terre Island, French Guadeloupe: new insight from U-series isotopes in weathering rinds Quantifying chemical weathering rates along a precipitation gradient on Basse-Terre Island, French Guadeloupe: new insight from U-series isotopes in weathering rinds
Inside soil and saprolite, rock fragments can form weathering clasts (alteration rinds surrounding an unweathered core) and these weathering rinds provide an excellent field system for investigating the initiation of weathering and long term weathering rates. Recently, uranium-series (U-series) disequilibria have shown great potential for determining rind formation rates and quantifying...
Authors
Jacqueline M. Engel, Linda May, Peter B. Sak, Jerome Gaillardet, Minghua Ren, Mark A. Engle, Susan L. Brantley
Wastewater disposal from unconventional oil and gas development degrades stream quality at a West Virginia injection facility Wastewater disposal from unconventional oil and gas development degrades stream quality at a West Virginia injection facility
The development of unconventional oil and gas (UOG) resources has rapidly increased in recent years; however, the environmental impacts and risks are poorly understood. A single well can generate millions of liters of wastewater, representing a mixture of formation brine and injected hydraulic fracturing fluids. One of the most common methods for wastewater disposal is underground...
Authors
Denise M. Akob, Adam Mumford, William H. Orem, Mark A. Engle, Julia Klinges, Douglas B. Kent, Isabelle M. Cozzarelli
Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA
Despite being one of the most important oil producing provinces in the United States, information on basinal hydrogeology and fluid flow in the Permian Basin of Texas and New Mexico is lacking. The source and geochemistry of brines from the basin were investigated (Ordovician- to Guadalupian-age reservoirs) by combining previously published data from conventional reservoirs with...
Authors
Mark A. Engle, Francisco R. Reyes, Matthew S. Varonka, William H. Orem, Ma Lin, Adam J. Ianno, Tiffani M. Westphal, Pei Xu, Kenneth C. Carroll
Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin
Growth in unconventional oil and gas has spurred concerns on environmental impact and interest in beneficial uses of produced water (PW), especially in arid regions such as the Permian Basin, the largest U.S. tight-oil producer. To evaluate environmental impact, treatment, and reuse potential, there is a need to characterize the compositional variability of PW. Although hydraulic...
Authors
Naima A. Khan, Mark A. Engle, Barry Dungan, F. Omar Holguin, Pei Xu, Kenneth C. Carroll
A practical guide to the use of major elements, trace elements, and isotopes in compositional data analysis: Applications for deep formation brine geochemistry A practical guide to the use of major elements, trace elements, and isotopes in compositional data analysis: Applications for deep formation brine geochemistry
In the geosciences, isotopic ratios and trace element concentrations are often used along with major element concentrations to help determine sources of and processes affecting geochemical variation. Compositional Data Analysis (CoDA) is a set of tools, generally attuned to major element data, concerned with the proper statistical treatment and removal of spurious correlations from...
Authors
Madalyn S. Blondes, Mark A. Engle, Nicholas Geboy
Science and Products
Filter Total Items: 64
Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota
Wastewaters from oil and gas development pose largely unknown risks to environmental resources. In January 2015, 11.4 M L (million liters) of wastewater (300 g/L TDS) from oil production in the Williston Basin was reported to have leaked from a pipeline, spilling into Blacktail Creek, North Dakota. Geochemical and biological samples were collected in February and June 2015 to identify...
Authors
Isabelle M. Cozzarelli, Katherine Skalak, D.B. Kent, Mark A. Engle, Adam J. Benthem, Adam Mumford, Karl B. Haase, Aida M. Farag, David Harper, S. C. Nagel, Luke R. Iwanowicz, William H. Orem, Denise M. Akob, Jeanne B. Jaeschke, Joel M. Galloway, Matthias Kohler, Deborah L. Stoliker, Glenn D. Jolly
Quantifying chemical weathering rates along a precipitation gradient on Basse-Terre Island, French Guadeloupe: new insight from U-series isotopes in weathering rinds Quantifying chemical weathering rates along a precipitation gradient on Basse-Terre Island, French Guadeloupe: new insight from U-series isotopes in weathering rinds
Inside soil and saprolite, rock fragments can form weathering clasts (alteration rinds surrounding an unweathered core) and these weathering rinds provide an excellent field system for investigating the initiation of weathering and long term weathering rates. Recently, uranium-series (U-series) disequilibria have shown great potential for determining rind formation rates and quantifying...
Authors
Jacqueline M. Engel, Linda May, Peter B. Sak, Jerome Gaillardet, Minghua Ren, Mark A. Engle, Susan L. Brantley
Wastewater disposal from unconventional oil and gas development degrades stream quality at a West Virginia injection facility Wastewater disposal from unconventional oil and gas development degrades stream quality at a West Virginia injection facility
The development of unconventional oil and gas (UOG) resources has rapidly increased in recent years; however, the environmental impacts and risks are poorly understood. A single well can generate millions of liters of wastewater, representing a mixture of formation brine and injected hydraulic fracturing fluids. One of the most common methods for wastewater disposal is underground...
Authors
Denise M. Akob, Adam Mumford, William H. Orem, Mark A. Engle, Julia Klinges, Douglas B. Kent, Isabelle M. Cozzarelli
Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA
Despite being one of the most important oil producing provinces in the United States, information on basinal hydrogeology and fluid flow in the Permian Basin of Texas and New Mexico is lacking. The source and geochemistry of brines from the basin were investigated (Ordovician- to Guadalupian-age reservoirs) by combining previously published data from conventional reservoirs with...
Authors
Mark A. Engle, Francisco R. Reyes, Matthew S. Varonka, William H. Orem, Ma Lin, Adam J. Ianno, Tiffani M. Westphal, Pei Xu, Kenneth C. Carroll
Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin
Growth in unconventional oil and gas has spurred concerns on environmental impact and interest in beneficial uses of produced water (PW), especially in arid regions such as the Permian Basin, the largest U.S. tight-oil producer. To evaluate environmental impact, treatment, and reuse potential, there is a need to characterize the compositional variability of PW. Although hydraulic...
Authors
Naima A. Khan, Mark A. Engle, Barry Dungan, F. Omar Holguin, Pei Xu, Kenneth C. Carroll
A practical guide to the use of major elements, trace elements, and isotopes in compositional data analysis: Applications for deep formation brine geochemistry A practical guide to the use of major elements, trace elements, and isotopes in compositional data analysis: Applications for deep formation brine geochemistry
In the geosciences, isotopic ratios and trace element concentrations are often used along with major element concentrations to help determine sources of and processes affecting geochemical variation. Compositional Data Analysis (CoDA) is a set of tools, generally attuned to major element data, concerned with the proper statistical treatment and removal of spurious correlations from...
Authors
Madalyn S. Blondes, Mark A. Engle, Nicholas Geboy