Surface water geochemical and isotopic variations in an area of accelerating Marcellus Shale gas development

Pelak, Adam J.; Sharma, Shikha

doi:10.1016/j.envpol.2014.08.016

Cited by 15 publications

(6 citation statements)

References 37 publications

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“…Mine drainage is likely to release toxic metals/metalloids into shallow groundwater around coal mines . Previous studies have identified coal-mine drainage by relatively high SO 4 and low Br and Ba concentrations as compared to saline fluids associated with oil and gas production. ,, Conventional oil and gas development may have contaminated shallow groundwater mainly due to surface spills (e.g., hydrocarbons, produced waters) and upward migration of saline fluids along improperly cased/cemented wells and unplugged or improperly plugged abandoned wells . Differentiating between produced waters from conventional and unconventional hydrocarbon reservoirs is challenging, although ratios of major ions and isotopic compositions of Sr, B, Li, Ba, and Ra can provide a unique fingerprint for each reservoir. ,,,,,,, However, the distinction between produced waters from conventional and unconventional reservoirs is not always possible due to geochemical overlaps. ,, To our knowledge, no pre-development baseline investigations have documented legacy groundwater contamination from previous hydrocarbon operations in shale gas development areas.…”

Section: Baseline Studies Of Shallow Groundwater Geochemistry In Shal...mentioning

confidence: 99%

“…95 Previous studies have identified coal-mine drainage by relatively high SO 4 and low Br and Ba concentrations as compared to saline fluids associated with oil and gas production. 3,130,131 Conventional oil and gas development may have contaminated shallow groundwater mainly due to surface spills (e.g., hydrocarbons, produced waters) and upward migration of saline fluids along improperly cased/ cemented wells and unplugged or improperly plugged abandoned wells. 132 Differentiating between produced waters from conventional and unconventional hydrocarbon reservoirs is challenging, although ratios of major ions and isotopic compositions of Sr, B, Li, Ba, and Ra can provide a unique fingerprint for each reservoir.…”

Section: Geological and Geochemical Characteristics Of Shale Reservoirsmentioning

confidence: 99%

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Potential Impacts of Shale Gas Development on Inorganic Groundwater Chemistry: Implications for Environmental Baseline Assessment in Shallow Aquifers

Bondu

Kloppmann

Naumenko-Dèzes

et al. 2021

Environ. Sci. Technol.

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The potential contamination of shallow groundwater with inorganic constituents is a major environmental concern associated with shale gas extraction through hydraulic fracturing. However, the impact of shale gas development on groundwater quality is a highly controversial issue. The only way to reliably assess whether groundwater quality has been impacted by shale gas development is to collect pre-development baseline data against which subsequent changes in groundwater quality can be compared. The objective of this paper is to provide a conceptual and methodological framework for establishing a baseline of inorganic groundwater quality in shale gas areas, which is becoming standard practice as a prerequisite for evaluating shale gas development impacts on shallow aquifers. For this purpose, this paper first reviews the potential sources of inorganic contaminants in shallow groundwater from shale gas areas. Then, it reviews the previous baseline studies of groundwater geochemistry in shale gas areas, showing that a comprehensive baseline assessment includes documenting the natural sources of salinity, potential geogenic contamination, and potential anthropogenic influences from legacy contamination and surface land use activities that are not related to shale gas development. Based on this knowledge, best practices are identified in terms of baseline sampling, selection of inorganic baseline parameters, and definition of threshold levels.

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Section: Baseline Studies Of Shallow Groundwater Geochemistry In Shal...mentioning

confidence: 99%

Section: Geological and Geochemical Characteristics Of Shale Reservoirsmentioning

confidence: 99%

Potential Impacts of Shale Gas Development on Inorganic Groundwater Chemistry: Implications for Environmental Baseline Assessment in Shallow Aquifers

Bondu

Kloppmann

Naumenko-Dèzes

et al. 2021

Environ. Sci. Technol.

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“…At present, hydraulic fracturing is a common method in increasing the production of CBM [2]. However, hydraulic fracturing has caused many problems, such as the environmental pollution, waste of water resources and clay swelling in the gas reservoir [3][4][5][6][7][8]. Liquid nitrogen (LN 2 ) fracturing, as a waterless fracturing technology, can overcome the above problems.…”

Section: Introductionmentioning

confidence: 99%

Effect of low temperature damage on tensile strength of coal under the liquid nitrogen freezing

Gao

Cai

et al. 2020

Therm sci

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To explore the influence of low temperature damage on the tensile strength of coal under the liquid nitrogen freezing, the Brazilian splitting tests are conducted on the bedding coal in this paper. The tensile strength, macro fracture surface morphology, failure path and micro-structures of the coal samples before and after liquid nitrogen treatment were analyzed systematically. The results show that the tensile strength of coal after liquid nitrogen freezing is reduced, the macro fracture surfaces with greater roughness or fractal dimension were induced in the coal treated by liquid nitrogen freezing during the Brazilian splitting tests, the opening and number of the failure paths of coal after liquid nitrogen freezing increase significantly, and the microscopically, the bedding and matrix structures of coal are destroyed due to the temperature stress caused by large temperature difference between the liquid nitrogen and coal matrix.

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“…They found no correlation between saline intrusions in groundwater and the location of shale gas wells, suggesting that geologic conditions in the study area supported the natural migration of brines (Warner et al, 2012). A geochemical and isotopic study in the Monongahela River Basin also found no correlation between the intensity of shale gas drilling and water quality parameter values, indicating that at the very least, there was no chronic surface water contamination occurring in the area (Pelak & Sharma, 2014).…”

Section: -Influences Of Shale Gas Development On Water Qualitymentioning

confidence: 85%

“…Most of these studies have been published as federal data reports or in specialized geochemistry journals and are not easily understood by the general public or regulatory officials, as they rely on complex geochemical and isotopic analysis and elaborate statistical models. Additionally, the methods often involve expensive sampling and laboratory testing procedures (Entrekin et al, 2011;Olmstead et al, 2013;Osborn et al, 2011;Pelak & Sharma, 2014;Warner et al, 2012;Warner et al, 2013, Wilson et al, 2014. These prohibitive costs prevent a large-scale evaluation of water quality in Marcellus Shale gas development regions.…”

Section: Acknowledgementsmentioning

confidence: 99%

Spatial and Temporal Analysis of Surface Water Quality in Relation to Marcellus Shale Gas Development in the Northern Panhandle of West Virginia

Yesenchak¹

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Pre-existing water chemistry data available from the West Virginia Department of Environmental Protection were used to examine temporal changes in surface water quality related to the onset of Marcellus Shale gas drilling activity in the state of West Virginia. Drilling is concentrated in the northwestern portion of the state. Watersheds were delineated for twelve discrete stream sampling locations in the Upper Ohio-Wheeling HUC-8 sub-basin, where shale gas drilling is prevalent. Kruskal-Wallis tests were deployed to compare pre-and post-drilling concentrations of conductivity, chloride, and total suspended solids for each location. Increased concentrations of these parameters are associated with surface water contaminated by shale gas drilling. Streams in this study show no significant temporal changes related to shale gas development. Correlation tests were used to identify possible relationships between water quality and different phases of the shale gas drilling process. Results of the analysis indicate that no relationship exists between these variables for the streams in this study. The nature of this analysis allows for identification of long-term water quality changes due to shale gas drilling but does not provide a mechanism for evaluating single point discharges or short-term contamination events. Studies of this type can also help identify potential sites where continuous monitoring sensors could be deployed in the future.

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Surface water geochemical and isotopic variations in an area of accelerating Marcellus Shale gas development

Cited by 15 publications

References 37 publications

Potential Impacts of Shale Gas Development on Inorganic Groundwater Chemistry: Implications for Environmental Baseline Assessment in Shallow Aquifers

Potential Impacts of Shale Gas Development on Inorganic Groundwater Chemistry: Implications for Environmental Baseline Assessment in Shallow Aquifers

Effect of low temperature damage on tensile strength of coal under the liquid nitrogen freezing

Spatial and Temporal Analysis of Surface Water Quality in Relation to Marcellus Shale Gas Development in the Northern Panhandle of West Virginia

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