References
- [1] Wikipedia, https://en.wikipedia.org/wiki/Illusory_truth_effect.
- [2] EIA 2015: Marcellus Region Drilling Productivity Report July 2015, U.S. Energy Information Administration. http://www.eia.gov/petroleum/drilling/pdf/marcellus.pdf.
- [3] EPA 2015: External Review Draft. EPA/600/R-15/047a, June 2015. http://www.epa.gov/hfstudy.
- [4] Osborn SG, Vengosh A, Warner NR, Jackson RB. Methane contamination of drinking water accompanying gas-well drilling and hydraulic fracturing. Proc National Acad Sci. 2011:108;8172-8176. DOI: 10.1073/pnas.1100682108.
- [5] Molofsky LJ, Connor JA, Farhat SK, Wylie AS, Wager T. Methane in Pennsylvania water wells unrelated to Marcellus shale fracturing. Oil Gas J. 2011:54-67. http://www.ogj.com/1/vol-109/issue-49/exploration-development/methane-in-pennsylvania-water-full.html.
- [6] Sueker JK, Clark BL, Cramer GH. Isotopic Forensic Techniques for Methane Source Discrimination. Stray Gas Incidence & Response Forum, Cleveland, Ohio. July 23-25, 2012. www.ipec.utulsa.edu/conf2011/sueker-27.pdf.
- [7] Darrah TH, Vengosh A, Jackson RB, Warner NR, Poreda RJ. Noble gases identify the mechanisms of fugitive gas contamination in drinking-water wells overlying the Marcellus and Barnett Shales. Proc National Acad Sci. 2014. DOI: 10.1073/pnas.1322107111.
- [8] Reichetseder P. Clean Unconventional Gas Production: Myth or Reality? The Role of Well Integrity and Methane Emissions, Swiss Bulletin for Applied Geology of SASEG/VSP and SFIG, 2014: 19(2);39-52. http://www.saseg.ch/cms/images/pdf/Publikationen/Medien/SwissBulletin_2-2014-lr.pdf.
- [9] Ingraffea AR, Wells MT, Santoro RL, Shonkoff SBC. Assessment and risk analysis of casing and cement impairment in oil and gas wells in Pennsylvania, 2000-2012. Proc National Acad Sci. 2014:111(30);10955-10960. http://www.pnas.org/content/111/30/10955.full.pdf.
- [10] Reichetseder P. Comment on SHIP News “New Numbers on well integrity failures”, 30.10.2014. http://www.shale-gas-information-platform.org/areas/news/detail/article/comment-by-professor-reichetseder-on-ship-news-new-numbers-on-well-integrity-failures.html.
- [11] Emmert A. Oil and Natural Gas Industry Standards for Hydraulic Fracturing and Unconventional Wells. IEA Golden Rules for Gas Workshop, Washington: American Petroleum Institute, March 2012.
- [12] API 2009: API Guidance Document HF1: Hydraulic Fracturing Operations - Well Construction and Integrity Guidelines. 1st edition. Washington: American Petroleum Institute; 2009. www.shalegas.energy.gov/resources/HF1.pdf.
- [13] API 2010: API Standard 65-Part 2, Isolating Potential Flow Zones During Well Construction. 2nd edition. Washington: American Petroleum Institute; 2010. http://www.shalegas.energy.gov/resources/65-2_e2.pdf.
- [14] Cuadrilla 2014: Well Integrity - Cuadrilla Land Based Wells. http://www.cuadrillaresources.com/wp-content/uploads/2012/02/DrillingPage-Well-Integrity-Document.pdf.
- [15] NORSOK 2013: Well Integrity in drilling and well operations. Norsok Standard D-010, Rev. 4, June 2013, http://www.standard.no/en/webshop/Search/?search=Norsok+D-010+Rev.+4#.
- [16] Oil&Gas UK 2012: Well Integrity Guidelines. Issue 1, July 2012. Oil and Gas UK 2012b, OP069, Available for purchase online, http://www.oilandgasuk.co.uk/cmsfiles/modules/publications/pdfs/OP069.pdf.
- [17] UKOOG 2013: UK Onshore Shale Gas Well Guidelines, Exploration and appraisal phase. Issue 1 February 2013, UKOOG United Kingdom Onshore Operators Group. http://www.ukoog.org.uk/images/ukoog/pdfs/ShaleGasWellGuidelines.pdf.