An approach for assessing engineering risk from shale gas wells in the United States

International Journal of Coal Geology

Volumn 126, Issue , 2014, Pages 4-19

  Soeder, Daniel J ^a   Sharma, Shikha ^b   Pekney, Natalie ^d   Hopkinson, Leslie ^b   Dilmore, Robert ^d   Kutchko, Barbara ^d   Stewart, Brian ^c   Carter, Kimberly ^a   Hakala, Alexandra ^d   Capo, Rosemary ^c  

^a NATIONAL ENERGY TECHNOLOGY LABORATORY   (United States)

^b NATIONAL ENERGY TECHNOLOGY LABORATORY   (United States)

^c WEST VIRGINIA UNIVERSITY   (United States)

^d UNIVERSITY OF PITTSBURGH   (United States)

Author keywords

Environmental; Fracturing; IAM; Risk; Shales

Indexed keywords

AIR; CARBON DIOXIDE; DIRECTIONAL DRILLING; ENERGY POLICY; ENVIRONMENTAL IMPACT; FRACTURING (OIL WELLS); HORIZONTAL WELLS; HYDRAULIC FRACTURING; NATURAL GAS WELLS; PETROLEUM DEPOSITS; RISKS; SHALE; WATER QUALITY; WELL DRILLING;

COAL BED METHANE WELLS; DEEPWATER OFFSHORE PLATFORMS; ENGINEERING TECHNIQUES; ENVIRONMENTAL; IAM; INTEGRATED ASSESSMENT MODELS; PERFORMANCE ASSESSMENT; UNCONVENTIONAL NATURAL GAS;

RISK ASSESSMENT;

COAL SEAM; COALBED METHANE; ENERGY RESOURCE; FRACTURE MECHANICS; GAS WELL; GOVERNANCE APPROACH; HYDRAULIC FRACTURE; HYDROCARBON EXPLORATION; HYDROCARBON RESERVE; NATURAL GAS; RISK ASSESSMENT; SHALE;

UNITED STATES;

EID: 84897029804     PISSN: 01665162     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.coal.2014.01.004     Document Type: Article

References (136)

1. Ake J., Mahrer K., O'Connell D., Block L. Deep-injection and closely monitored induced seismicity at Paradox Valley, Colorado. Bull. Seismol. Soc. Am. April 2005, 95(2):664-683. 10.1785/0120040072.
2. AL-Bazali T.M. The consequences of using concentrated salt solutions for mitigating wellbore instability in shales. J. Pet. Sci. Eng. 2012, 80(94-101):664-683.
3. ALL Consulting Modern shale gas development in the United States: a primer: U.S. Department of Energy report DE-FG26-04NT15455 2009, (116 pp.).
4. Aravena R., Harrison S.M., Barker J.F., Abercrombie H., Rudolph H. Origin of methane in the Elk Valley coal field, southeastern British Columbia, Canada. Chem. Geol. 2003, 195(1-4):219-227.
5. Armendariz A. Emissions from natural gas production in the Barnett Shale area and opportunities for cost-effective improvements. Report to Environmental Defense Fund, Austin, TX 2009, (43 pp. (http://www.edf.org/sites/default/files/9235_Barnett_Shale_Report.pdf; accessed February, 2013)).
6. Atkinson C., Eftaxiopoulos D.A. Numerical and analytical solutions for the problem of hydraulic fracturing from a cased and cemented wellbore. Int. J. Solids Struct. 2002, 39:1621-1650.
7. Barbot E., Vidic N.S., Gregory K.B., Vidic R.D. Spatial and temporal correlation of water quality parameters of produced waters from Devonian-age shale following hydraulic fracturing. Environ. Sci. Technol. 2013, 47:2562-2569.
8. Barnes Kent B., Morgan John M., Roberge Martin C. Impervious surfaces and the quality of natural and built environments 2002, Department of Geography and Environmental Planning, Towson University, Baltimore, (MD 21252, 28 pp. (http://pages.towson.edu/morgan/files/Impervious.pdf)).
9. Bernard B.B. Light hydrocarbons in marine sediments 1978, Ph.D. Dissertation, Texas A&M University, College Station, TX, (144 pp.).
10. Blauch M.E., Myers R.R., Moore T.R., Lipinski B.A. Marcellus Shale post-frac flowback waters-where is all the salt coming from and what are the implications?. Society of Petroleum Engineers Eastern Regional Meeting, Charleston, WV 2009, 1-20.
11. Bolyard T.H. A summary and evaluation of the eastern gas shales program cored wells in the Appalachian Basin. Report prepared for U.S. Department of Energy under contract DE-AM21-78MC08216 1981, Science Applications, Inc., Morgantown, WV, (September 1981, 32 pp.).
12. Botz R., Pokojski H.D., Schmitt M., Thomm M. Carbon isotope fractionation during bacterial methanogenesis by, CO2 reduction. Org. Geochem. 1996, 25(3-4):255-262.
13. Brabec J.D. Imperviousness and land-use policy: toward an effective approach to watershed planning. J. Hydrol. Eng. 2009, 14:425-433.
14. Brubaker T.M., Stewart B.W., Capo R.C., Schroeder K.T., Chapman E.C., Spivak-Birndorf L.J., Vesper D.J., Cardone C.R., Rohar P.C. Coal fly ash interaction with environmental fluids: geochemical and strontium isotope results from combined column and batch leaching experiments. Appl. Geochem. 2013, 32:184-194.
15. Chapman E.C., Capo R.C., Stewart B.W., Kirby C.S., Engle M.A., Rowan E.L., Edenborn H.M. Strontium isotopic composition of flowback waters associated with Marcellus Shale natural gas extraction, Bradford County, Pennsylvania. GSA Abstracts with Programs 2011, vol. 43, No.1:76.
16. Chapman E.C., Capo R.C., Stewart B.W., Kirby C.S., Hammack R.W., Schroeder K.T., Edenborn H.M. Geochemical and strontium isotope characterization of produced waters from Marcellus Shale natural gas extraction. Environ. Sci. Technol. 2012, 46:3545-3553.
17. Chapman E.C., Capo R.C., Stewart B.W., Hedin R.S., Weaver T.J., Edenborn H.M. Strontium isotope quantification of siderite, brine, and acid mine drainage contributions to abandoned gas well discharges in the Appalachian Plateau. Appl. Geochem. 2013, 31:109-118.
18. Chen G., Chenevert M.E., Sharma M.M., Yu M. A study of wellbore stability in shales including poroelastic, chemical, and thermal effects. J. Pet. Sci. Eng. 2003, 38:167-176.
19. Chung H.M., Gormly J.R., Squires R.M. Origin of gaseous hydrocarbons in subsurface environments: theoretical considerations of carbon isotope distribution. Chem. Geol. 1988, 71:97-104.
20. Clark C.E., Burnham A.J., Harto C.B., Horner R.M. The technology and policy of hydraulic fracturing and potential environmental impacts of shale gas development. Environ. Pract. 2012, 14:249-261.
21. Coleman D.D., Meents W.F., Liu C.L., Keogh R.A. Isotopic identification of leakage gas from underground storage reservoirs-a progress report. Illinois Petroleum-111 1977, Illinois State Geological Survey, Urbana, IL, (10 pp.).
22. Colorado Oil & Gas Conservation Commission "Gasland" correction document posted on Library page of website, (October 2010, 4 pp.). http://cogcc.state.co.us/.
23. Detrow Scott Tioga County methane migration: onetime geyser being brought under control: StateImpact Pennsylvania http://stateimpact.npr.org/pennsylvania/2012/06/22/tioga-county-methane-migration-onetime-geyser-being-brought-under-control/.
24. Dresel P.E., Rose A.W. Chemistry and origin of oil and gas well brines in western. Bureau of Topographic and Geologic Survey, 4th series 2010, (48 pp. (http://www.marcellus.psu.edu/resources/PDFs/brines.pdf)).
25. Drohan P.J., Brittingham M. Topographic and soil constraints to shale-gas development in the north central Appalachians. Soil Sci. Soc. Am. J. 2012, 76:1696-1706.
26. Eastern Research Group, Inc.and Sage Environmental Consulting, LP City of Fort Worth Natural Gas Air Quality Study. Final Report prepared for the City of Fort Worth, TX 2011, (320 pp. (http://fortworthtexas.gov/uploadedFiles/Gas_Wells/AirQualityStudy_final.pdf)).
27. Engelder Terry Capillary tension and imbibition sequester frack fluid in Marcellus gas shale. Proc. Nat. Acad. Sci. (PNAS) Lett. 2012, 109(52):E3625. (December 26, 2012, (www.pnas.org/cgi/doi/10.1073/pnas.1216133110)).
28. Engle M.A., Rowan E.L., Kraemer T.F., Doolan C. Marcellus Shale flowback waters. Examination of solute and water sources: (abstract) American Association of Petroleum Geologists Eastern Section Meeting 2011, (September 25-27, 2011, Arlington, Virginia (available online at http://www.gswweb.org/aapg/abstracts/Engle.pdf; accessed July 25, 2013)).
29. Entrekin Sally, Evans-White Michelle, Johnson Brent, Hagenbuch Elisabeth Rapid expansion of natural gas development poses a threat to surface waters. Front. Ecol. Environ. 2011, 9:503-511. 10.1890/110053.
30. Faber E., Stahl W. Geochemical surface exploration for hydrocarbons in North Sea. Am. Assoc. Pet. Geol. Bull. 1984, 68:363-386.
31. Ferrar K.J., Michanowicz D.R., Christen C.L., Mulcahy N., Malone S.L., Sharma R.K. Assessment of effluent contaminants from three facilities discharging Marcellus shale wastewater to surface waters in Pennsylvania. Environ. Sci. Technol. 2013, 47:3472-3481.
32. Fisher Kevin, Warpinski Norm Hydraulic fracture height growth: real data. SPE Prod. Oper. 2012, 27(1):8-19. 10.2118/145949-PA.
33. Fortson Lauren, Yatzor Brett, Bank Tracy Physical and chemical associations of uranium, chromium and hydrocarbons in the Marcellus Shale (poster abstract). GSA Abstracts with Programs 2011, vol. 43, No. 1:60.
34. Frohlich C. Two-year survey comparing earthquake activity and injection-well locations in the Barnett Shale, Texas. Proc. Natl. Acad. Sci. 2012, 109:13934-13938.
35. Frohlich C., Hayward C., Stump B., Potter E. The Dallas-Fort Worth earthquake sequence: October 2008 through May 2009. Bull. Seismol. Soc. Am. 2011, 101:327-340.
36. Gilleland Kelly Hydraulic Fracturing, Schlumberger Overview 2011, Hart Energy Publishing, Houston TX, (4 pp. (http://www.slb.com//media/Files/stimulation/industry_articles/201101_ep_improving_well_economics.pdf), accessed November 2013).
37. Glosser Deborah Environmental, health, and safety dynamics of the Marcellus Shale in Pennsylvania 2013, (M.S. thesis), University of Pittsburgh, Pittsburgh, PA, (December 2013, 88 pp.).
38. Graf G.L., Friedman I., Meents W.F. The origin of saline formation waters, II: isotopic fractionation by shale micropore systems. Information Circular 1965, 393. Illinois State Geological Survey, Urbana, IL, (32 pp.).
39. Graham John Fine particulate matter (PM2.5) and ozone (O3) air quality in Western Pennsylvania in the 2000s. Research Report prepared by Clean Air Task Force, Boston, MA, for The Heinz Endowments, Pittsburgh, PA 2011, (March 9, 2011, 34 p. (http://www.heinz.org/UserFiles/Library/2011-air_quality-research.pdf)).
40. Grant J., Parker L., Bar-Ilan A., Kemball-Cook S., Yarwood G. Development of emissions inventories for natural gas exploration and production activity in the Haynesville Shale, draft report prepared for the East Texas Council of Governments, Kilgore, TX 2009, ENVIRON International Corporation, Novato, CA, (August 31, 2009, 67 pp.).
41. Gregory K.B., Vidic R.D., Dzombak D.A. Water management challenges associated with the production of shale gas by hydraulic fracturing. Elements 2011, 7:181-186.
42. Ground Water Protection Council FracFocus well records: January 1, 2011 through February 27, 2012 accessed on-line at. http://www.fracfocus.org.
43. Gu J., Zhon P., Shao C., Bai S., Zhang H., Li K. Effect of interface defects on shear strength and fluid channeling at cement-interlayer interface. J. Pet. Sci. Eng. 2012, 100:117-122.
44. Haluszczak L.O., Rose A.W., Kump L.R. Geochemical evaluation of flowback brine from Marcellus gas wells in Pennsylvania, USA. Appl. Geochem. 2013, 28:55-61.
45. Hammack R.W. Well infrastructure and geologic setting at NETL's Marcellus Shale test site in Greene County, Pennsylvania (abstract). American Association of Petroleum Geologists 2013 Annual Convention and Exhibition, Pittsburgh, PA, AAPG Search and Discovery Article #90163 2013, (1 p. (http://www.searchanddiscovery.com/abstracts/html/2013/90163ace/abstracts/ham.htm).
46. Hammer R., VanBriesen J. Fracking's Wake: New Rules are Needed to Protect Our Health and Environment from Contaminated Wastewater. Natural Resources Defense Council Document D 2012, 12-05-A. (113 pp. (http://www.nrdc.org/energy/files/fracking-wastewater-fullreport.pdf)).
47. Harper J.A. The Marcellus Shale-an old "new" gas reservoir. Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey 2008, vol. 38, No. 1. (20 pp.).
48. Hayes T. Sampling and analysis of water streams associated with the development of Marcellus Shale gas: final report for Marcellus Shale Coalition by Gas Technology Institute, Des Plaines, IL 2009, (49 pp.).
49. Hitchon B., Friedman I. Geochemistry and origin of formation waters in western Canada sedimentary basin-stable isotopes of hydrogen and oxygen. Geochim. Cosmochim. Acta 1969, 33:1321-1349.
50. Hladik Michelle L., Focazio Michael J., Engle Mark Discharges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams. Sci. Total Environ. 2014, 466-467:1085-1093. (January 2014 (http://www.sciencedirect.com/science/article/pii/S0048969713009224)).
51. Holser W.T. Trace Elements and Isotopes in Evaporates. Mineralogical Society of America Short Course Notes Vol. 6, Marine Minerals 1979, 295-346. Mineralogical Society of America, Washington D.C. R.G. Burns (Ed.).
52. Horton Andrea I. A comparative analysis of stimulations in the eastern gas shales: Report DOE/METC 145 1981, U.S. Department of Energy, Morgantown Energy Technology Center, Morgantown, WV, (120 pp.).
53. Horton S. Disposal of hydrofracking waste fluid by injection into subsurface triggers earthquake swarm in central Arkansas with potential for damaging earthquake. Seismol. Res. Lett. 2012, 83:250-260.
54. Howarth Robert W., Santoro Renee, Ingraffea Anthony Methane and the greenhouse-gas footprint of natural gas from shale formations. Clim. Chang. 2011, 106:679-690.
55. Hrin E. Fracking fluid spilled into creek at gas well incident near LeRoy: thedailyreview.com http://thedailyreview.com/fracking-fluid-spilled-into-creek-at-gas-well-incident-near-leroy-1.1135252.
56. Hunt J.M. Petroleum Geochemistry and Geology 1996, W. H. Freeman and Co., New York, (743 pp.).
57. Jaramillo Paulina, Michael Griffin W., Scott Matthews H. Comparative life-cycle air emissions of coal, domestic natural gas, LNG, and SNG for electricity generation. Environ. Sci. Technol. 2007, 41:6290-6296.
58. Jiang Mohan, Michael Griffin W., Hendrickson Chris, Jaramillo Paulina, VanBriesen Jeanne, Venkatesh Aranya Life cycle greenhouse gas emissions of Marcellus shale gas. Environ. Res. Lett. 2011, 6(3). (Article 034014 (July-September 2011)). 10.1088/1748-9326/6/3/034014.
59. Kargbo D.M., Wilhelm R.G., Campbell D.J. Natural gas plays in the Marcellus Shale: challenges and potential opportunities. Environ. Sci. Technol. 2010, 44:5679-5684.
60. Kell Scott State oil and gas agency groundwater investigations and their role in advancing regulatory reforms. A Two-State Review: Ohio and Texas, report prepared for the Groundwater Protection Research and Education Foundation (GWPREF) of the Ground Water Protection Council, Oklahoma City, OK 2011, (165 pp. (http://www.gwpc.org/e-library/e_library_list.htm)).
61. Kell Scott Towards Rational, Consistent, Science-Based Risk Assessment Protocols (abstract). Stray Gas Incidence and Response Forum, Ground Water Protection Council, July 24-26, 2012, Cleveland, OH 2012, (http://gwpc.brocodev.com/sites/default/files/event-sessions/Kell_Scott2.pdf).
62. Kemball-Cook Susan, Bar-Ilan Amnon, Grant John, Parker Lynsey, Jung Jaegun, Santamaria Wilson, Mathews Jim, Yarwood Greg Ozone impacts of natural gas development in the Haynesville shale. Environ. Sci. Technol. 2010, 44:9357-9363.
63. Kharaka Y.K., Thordsen J.J. Stable isotope geochemistry and origin of waters in sedimentary basins. Isotope Signatures and Sedimentary Records 1992, 441-466. Springer, Berlin, Heidelberg, Germany. N. Clauer, S. Chaudouri (Eds.).
64. King George E. Hydraulic Fracturing 101: What every representative, environmentalist, regulator, reporter, investor, university researcher, neighbor and engineer should know about estimating frac risk and improving frac performance in unconventional oil and gas wells. Paper SPE 152596, presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, USA, 6-8 February 2012 2012, Society of Petroleum Engineers, Richardson, Texas, (80 pp.).
65. Knauth L.P., Beeunas M.A. Isotope geochemistry of fluid inclusions in Permian halite with implications for the isotopic history of ocean water and origin of saline formation waters. Geochim. Cosmochim. Acta 1986, 50:419-434.
66. Kutchko B., Pike W., Lang K., Strazisar B., Rose K. An assessment of research needs related to improving primary cement isolation of formations in deep offshore wells. NETL-TRS-3-2012; EPAct Technical Report Series 2012, U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV, (20 pp.).
67. Ladlee J., Jacquet J. The implications of multi-well pads in the Marcellus shale: research and policy brief series. CaRID 2011, 43. (2 pp.).
68. Laughrey C.D., Baldassare F.J. Geochemistry and origin of some natural gases in the Plateau Province, Central Appalachian Basin, Pennsylvania and Ohio. Am. Assoc. Pet. Geol. Bull. 1998, 82(2):317-355.
69. Lee D.S., Herman J.D., Elsworth D., Kim H.T., Lee H.S. A critical evaluation of unconventional gas recovery from the Marcellus Shale, northeastern United States. Korean Soc. Civ. Eng. J. Civ. Eng. 2011, 15(4):679-687.
70. Legere L. Wyoming County well malfunction causes spill, evacuation: thetimes-tribune.com http://thetimes-tribune.com/news/wyoming-county-well-malfunction-causes-spill-evacuation-1.1458575.
71. Lutz B.D., Lewis A.N., Doyle M.W. Generation, transport, and disposal of wastewater associated with Marcellus Shale gas development. Water Resour. Res. 2013, 49(2):647-656. (February 2013).
72. Uintah Basin Winter Ozone & Air Quality Study, 2012. Utah State University Document Number: CRD13-320.32, Prepared for Utah Department of Environmental Quality 2013, (February 01, 2013, 285 pp. (http://rd.usu.edu/files/uploads/ubos_2011-12_final_report.pdf)). S. Lyman, H. Shorthill (Eds.).
73. Macpherson G.L., Capo R.C., Stewart B.W., Phan T.T., Schroeder K.T., Hammack R.W. Lithium concentrations and isotope ratios in produced water from the Marcellus Formation, Pennsylvania, USA (abstract). GSA Abstracts with Programs 2012, vol. 44, No. 7:315.
74. Maloney Kelly O., Yoxtheimer David A. Production and disposal of waste materials from gas and oil extraction from the Marcellus Shale play in Pennsylvania. Environ. Pract. 2012, 14:278-287. (Dec 2012).
75. Martin R., Moore K., Mansfield M., Hill S., Harper K., Shorthill H. Uinta Basin winter ozone and air quality study, final report. Document EDL/11-039 submitted to Uintah County Impact Mitigation Special Service District, Vernal, UT, by Utah State University Research Foundation 2011, (June 14, 2011, 104 p. (http://rd.usu.edu/files/uploads/edl_2010-11_report_ozone_final.pdf)).
76. Martineau David F. History of the Newark East field and the Barnett Shale as a gas reservoir. AAPG Bull. 2007, 91:399-403. (April 2007). 10.1306/intro910407.
77. Martini A.M., Walter L.M., Budai J.M., Ku T.C.W., Kaiser C.J., Schoell M. Genetic and temporal relations between formation waters and biogenic methane; Upper Devonian Antrim Shale, Michigan Basin, U.S.A. Geochim. Cosmochim. Acta 1998, 62:1699-1720.
78. Maykuth Andrew Long fight over fracking still divides Pa. town. Phila. Inq. 2012, (August 27, 2012 http://articles.philly.com/2012-08-27/news/33403570_1_susquehanna-county-town-cabot-oil-baby-drill).
79. McIntosh Jennifer C. Geochemical and isotopic composition of Appalachian Basin brines: origin of salinity and fingerprints of fluid reservoirs (abstract). GSA Abstracts with Programs 2012, vol. 44, No. 7:337.
80. McIntosh J.C., Martini A.M., Petsch S., Nüsslein K. Biogeochemistry of the Forest City Basin coalbed methane play. Int. J. Coal Geol. 2008, 76:111-118.
81. Molofsky Lisa J., Connor John A., Wylie Albert S., Wagner Tom, Farhat Shahla K. Evaluation of methane sources in groundwater in Northeastern Pennsylvania. Ground Water 2013, 51(3):333-349. (May-June 2013). 10.1111/gwat.12056.
82. Montgomery C.T., Smith M.B. Hydraulic fracturing: history of an enduring technology. J. Pet. Technol. 2010, 62(12):26-32.
83. Montgomery Scott L., Jarvie Daniel M., Bowker Kent A., Pollastro Richard M. Mississippian Barnett Shale, Fort Worth Basin, north-central Texas: gas-shale play with multi-trillion cubic foot potential. Am. Assoc. Pet. Geol. Bull. 2005, 89(2):155-175. 10.1306/09170404042.
84. Moore L.P., Jones J.E., Perlman S.H., Huey T.A. Evaluation of precompletion annular gas leaks in a Marcellus lateral. SPE 153142, presented at SPE Americas Unconventional Resources Conference, 5-7 June 2012, Pittsburgh, PA 2012, 10.2118/153142-MS.
85. Myers T. Potential contaminant pathways from hydraulically fractured shale to aquifers. Ground Water 2012, 50(6):872-882. (November/December 2012; Article first published online: 17 Apr 2012). 10.1111/j.1745-6584.2012.00933.x.
86. Myers T. Author's reply to comment on "Potential contaminant pathways from hydraulically fractured shale to aquifers". Ground Water 2012, 50(6):828-830. (November/December 2012; Article first published online: 24 Sep 2012)). 10.1111/j.1745-6584.2012.00991.x.
87. Nelson E.B. Well Cementing 2006, Schlumberger Educational Services, Sugar Land, TX, (773 pp.). Second edition.
88. Nicot J.P., Scanlon B.R. Water use for shale-gas production in Texas, U.S. Environ. Sci. Technol. 2012, 46:3580-3586.
89. Olmstead S.M., Muehlenbachs L.A., Shih J.-S., Chu Z., Krupnick A.J. Shale gas development impacts on surface water quality in Pennsylvania. Proc. Natl. Acad. Sci. U. S. A. 2013, 110(13):4962-4967. (published online ahead of print March 11, 2013 (http://www.pnas.org/content/early/2013/03/06/1213871110.full.pdf). 10.1073/iti1313110.
90. Osborn S.G., Vengosh A., Warner N.R., Jackson R.B. Methane contamination of drinking water accompanying gas-well drilling and hydraulic fracturing. Proc. Natl. Acad. Sci. U. S. A. 2011, 108(20):8172-8176. (published online ahead of print May 9, 2011). 10.1073/pnas.1100682108.
91. PADEP Chemicals used by hydraulic fracturing companies in Pennsylvania for surface and hydraulic fracturing activities. Pennsylvania Department of Environmental Protection (PADEP) 2010, (http://files.dep.state.pa.us/OilGas/BOGM/BOGMPortalFiles/MarcellusShale/Frac%20list%206-30-2010.pdf; accessed January 2013. 1 p.).
92. Pétron Gabrielle, et al. Hydrocarbon emissions characterization in the Colorado Front Range: a pilot study. J. Geophys. Res. Atmos. 2012, 117(D4):D04304. (19 pp., February 2012, article first published online: 21 Feb 2012). 10.1029/2011JD016360.
93. Poth C.W. Occurrence of brine in western Pennsylvania: Mineral Resource Report M 47 1962, Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey, (53 pp).
94. Rahm D. Regulating hydraulic fracturing in shale gas plays: the case of Texas. Energy Policy 2011, 39:2974-2981.
95. Révész K.M., Breen K.J., Baldassare A.J., Burruss R.C. Carbon and hydrogen isotopic evidence for the origin of combustible gases in water-supply wells in north-central Pennsylvania. Appl. Geochem. 2010, 25:1845-1859.
96. Rostron B.J., Holmden C. Fingerprinting formation-waters using stable isotopes, Midale area, Williston Basin, Canada. J. Geochem. Explor. 2000, 69-70:219-223.
97. Rowan E.L., Engle M.A., Kirby C.S., Kraemer T.F. Radium content of oil- and gas-field produced waters in the northern Appalachian Basin (USA)-summary and discussion of data. USGS Scientific Investigations Report 2011-5135 2011, U.S. Geological Survey, Reston, VA, (35 pp. (http://pubs.usgs.gov/sir/2011/5135/)).
98. Saberi Pouné Navigating medical issues in shale territory: New Solutions. A Journal of Environmental and Occupational Health Policy 2013, 209-221. Baywood Publishing Company, Inc., Amityville, NY 11701. 10.2190/NS.23.1.m.
99. Saiers J.E., Barth E. Comment on "Potential contaminant pathways from hydraulically fractured shale to aquifers". Ground Water 2012, 50(6):826-828. 10.1111/j.1745-6584.2012.00990.x.
100. Schnell R.C., Oltmans S.J., Neely R.R., Endres M.S., Molenar J.V., White A.B. Rapid photochemical production of ozone at high concentrations in a rural site during winter. Nat. Geosci. 2009, 2(2):120-122. 10.1038/ngeo415.
101. Schoell M. Genetic characterization of natural gases. Geochim. Cosmochim. Acta 1983, 12:2225-2238.
102. Schrider L.A., Wise R.L. Potential new sources of natural gas. J. Pet. Technol. 1980, 32(4):703-716. 10.2118/7628-PA.
103. Seeber L., Armbruster J.G., Kim W.Y. A fluid-injection-triggered earthquake sequence in Ashtabula, Ohio: implications for seismogenesis in stable continental regions. Bull. Seismol. Soc. Am. 2004, 94(1):76-87.
104. Sharma S., Baggett J. Application of carbon isotopes to detect seepage out of coalbed natural gas produced water impoundments. Appl. Geochem. 2011, 26:1423-1432.
105. Sharma S., Frost C. An innovative approach for tracing coalbed natural gas co-produced water using stable isotopes of carbon and hydrogen. Ground Water 2008, 46:329-334.
106. Sharma S., Mulder M., Edenborn H., Hammack R. Stable isotope fingerprinting of co-produced waters associated with Marcellus Shale natural gas extraction (abstract). GSA Abstracts with Programs 2011, vol. 43, No. 5:566.
107. Sharma S., Mulder M.L., Sack A., Bowman L., Carr T., Schroeder K., Hammack R., White J., Chambers D. Understanding natural variations of dissolved methane in areas of accelerating Marcellus Shale gas development (abstract). GSA Abstracts with Programs 2012, Vol. 44, No. 7:313.
108. Sharma S., Sack A., Adams J.P., Vesper D.J., Capo R.C., Hartstock A., Edenborn H.M. Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania USA. Appl. Geochem. 2013, 29:32-42.
109. Sharma S., Mulder M., Sack A., Schroeder K., Hammack R. Isotope approach to assess hydrologic connections during Marcellus Shale drilling. Ground Water 2014, (in press). 10.1111/gwat.12083.
110. Siegel D.I., Szustakowski R.J., Frape S. Regional appraisal of brine chemistry in the Albion Group sandstones (Silurian) of New York, Pennsylvania, and Ohio. Assoc. Pet. Geochem. Explor. Bull. 1990, 6:66-77.
111. Siegel D.I., Lesniak K.A., Stute M., Frape M. Isotopic geochemistry of the Saratoga Springs: implications for the origin of solutes and source of carbon dioxide. Geology 2004, 32:257-260.
112. Skone T.J., Littlefield J., Marriott J. Life Cycle Greenhouse Gas Inventory of Natural Gas Extraction. Delivery and Electricity Production, final report, NETL/DOE-2011/1522, U.S. Department of Energy 2011, National Energy Technology Laboratory, Albany, OR, (96 pp.).
113. Slonecker E.T., Milheim L.E., Roig-Silva C.M., Malizia A.R., Marr D.A., Fisher G.B. Landscape consequences of natural gas extraction in Bradford and Washington Counties, Pennsylvania, 2004-2010: USGS Open File Report 2012-1154 2012, U.S. Geological Survey, Reston, VA, (36 pp.).
114. Soeder Daniel J. Shale gas development in the United States. Advances in Natural Gas Technology 2012, (April 2012, InTech, Rijeka, Croatia, 542 pp. (http://www.intechopen.com/books/advances-in-natural-gas-technology)). H.A. Al-Megren (Ed.).
115. Soeder D.J., Kappel W.M. Water resources and natural gas production from the Marcellus Shale: USGS Fact Sheet 2009-3032 2009, U.S. Geological Survey, Reston, VA, (6 pp.).
116. Soeder D.J., Randolph P.L., Matthews R.D. Porosity and permeability of eastern Devonian gas shale. Topical Report DOE/MC/20342-8 prepared for U.S. Department of Energy under contract DE-AC21-83MC20342 1986, Institute of Gas Technology, Chicago, IL, (Feb. 1986, 117 pp.).
117. Stahl W. Carbon isotope fractionations in natural gases. Nature 1974, 251:134-135.
118. Taylor H.F.W. Cement Chemistry 1997, Academic Press, New York, (459 pp.).
119. Tetra Tech Evaluation of high TDS concentrations in the Monongahela River, Pittsburgh, PA. Report prepared for Marcellus Shale Coalition, Pittsburgh, PA 2009, (January 2009, 127 pp. (http://marcelluscoalition.org/wp-content/uploads/2010/06/Tetra_Tech_TDS_Report.pdf)).
120. Tofflemire T.J., Brezner G.P. Deep-well injection of wastewater. J. Water Pollut. Control.Fed. 1971, 43(7):1468-1479.
121. Trecartin Ralph R. The reliability of the book-to-market ratio as a risk proxy. Financ. Serv. Rev. 2000, 9(4):361-373.
122. Tufford D.L., McKeller H.N.J., Hussey J.R. In-stream nonpoint source nutrient prediction with land-use proximity and seasonality. J. Environ. Qual. 1998, 27:100-111.
123. U.S.EPA Sampling data for flowback and produced water provided by EPA by nine oil and gas well operators (web page data only), Docket ID: EPA-HQ-ORD-2010-0674 accessed January 2013. http://www.regulations.gov/#!docketDetail;rpp=100;so=DESC;sb=docId;po=0;D=EPA-HQ-ORD-2010-0674.
124. U.S.EPA Study of the potential impacts of hydraulic fracturing on drinking water resources. Progress Report 2012, (December 2012, 278 p. (http://www.epa.gov/hfstudy/)).
125. U.S.House of Representatives, Committee on Energy and Commerce (CEC) Staff Chemicals used in hydraulic fracturing. Report prepared by committee staff for: Rep. Henry A. Waxman, Rep. Edward J. Markey, and Rep. Diana DeGette 2011, (30 pp., accessed Nov. 2013. (http://democrats.energycommerce.house.gov/sites/default/files/documents/Hydraulic-Fracturing-Chemicals-2011-4-18.pdf)).
126. Veil J.A. Water management technologies used by Marcellus Shale gas producers. Final Report ANL/EVS/R-10/3, prepared by Argonne National Laboratory for United States Department of Energy 2010, National Energy Technology Laboratory, (56 pp.).
127. Vidic, Radislav S.L.Brantley, Vandenbossche J.M., Yoxtheimer D., Abad J.D. Impact of shale gas development on regional water quality. Science 2013, 340:1235009-1-1235009-9. (May 2013). 10.1126/science.1235009.
128. Wall A.J., Capo R.C., Stewart B.W., Lavin S.M., Hakala J.A., Schroeder K.T., Casson L.W., Monnell J.D., States S. A baseline geochemical and Sr isotope assessment of surface waters in the Allegheny River watershed, Pennsylvania, USA (abstract). American Geophysical Union Abstracts H34B-06 2012, 1499551.
129. Warner N., Osborn S., Jackson R., Vengosh A. Boron and strontium isotopes as sensitive tracers for indicating potential shallow groundwater contamination from Marcellus Formation brines (abstract). GSA Abstracts with Programs 2011, vol. 43, No. 5:566.
130. Warner N.R., Jackson R.B., Darrah T.H., Osborn S.G., Down A., Zhao K., White A., Vengosh A. Geochemical evidence for possible natural migration of Marcellus Formation brine to shallow aquifers in Pennsylvania. Proc. Natl. Acad. Sci. U. S. A. 2012, 109(11):961-966.
131. Warner N.R., Jackson R.B., Darrah T.H., Osborn S.G., Down A., Zhao K., White A., Vengosh A. Reply to Engelder: potential for fluid migration from the Marcellus Formation remains possible. Proc. Natl. Acad. Sci. U. S. A. 2012, 109:E3626.
132. Whiticar M.J. Correlation of natural gases with their sources. The Petroleum System-From Source to Trap: American Association of Petroleum Geologists Memoir 60 1994, 261-283. American Association of Petroleum Geologists, Tulsa, OK. L.B. Magoon, W.G. Dow (Eds.).
133. Whiticar M.J. Carbon and hydrogen isotope systematic of bacterial formation and oxidation of methane. Chem. Geol. 1999, 161:291-314.
134. Wilson T.P., Long D.T. Geochemistry and isotope chemistry of Michigan Basin brines: Devonian formations. Appl. Geochem. 1993, 8:81-100.
135. Wilson J.M., VanBriesen J.M. Oil and gas produced water management and surface drinking water sources in Pennsylvania. Environ. Pract. 2012, 14:288-300.
136. Yu M., Chenevert M.E., Sharma M.M. Chemical-mechanical wellbore instability model for shales: accounting for solute diffusion. J. Pet. Sci. Eng. 2003, 38:131-143.