气候变化领域集成服务门户(CCPortal): Public data from three US states provide new insights into well integrity

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DOI	10.1073/PNAS.2013894118
	Public data from three US states provide new insights into well integrity
	Lackey G.; Rajaram H.; Bolander J.; Sherwood O.A.; Ryan J.N.; Shih C.Y.; Bromhal G.S.; Dilmore R.M.
发表日期	2021
ISSN	00278424
卷号	118 期号:14
英文摘要	Oil and gas wells with compromised integrity are a concern because they can potentially leak hydrocarbons or other fluids into groundwater and/or the atmosphere.Most states in the United States require some form of integrity testing, but few jurisdictions mandate widespread testing and open reporting on a scale informative for leakage risk assessment. In this study, we searched 33 US state oil and gas regulatory agency databases and identified records useful for evaluating well integrity in Colorado, New Mexico, and Pennsylvania. In total, we compiled 474,621 testing records from 105,031 wells across these states into a uniform dataset. We found that 14.1% of wells tested prior to 2018 in Pennsylvania exhibited sustained casing pressure (SCP) or casing vent flow (CVF)-two indicators of compromised well integrity. Data from different hydrocarbon-producing regions within Colorado and NewMexico revealed a wider range (0.3 to 26.5%) of SCP and/or CVF occurrence than previously reported, highlighting the need to better understand regional trends in well integrity. Directional wells were more likely to exhibit SCP and/or CVF than vertical wells in Colorado and Pennsylvania, and their installation corresponded with statewide increases in SCP and/or CVF occurrence in Colorado (2005 to 2009) and Pennsylvania (2007 to 2011). Testing the ground around wells for indicators of gas leakage is not a widespread practice in the states considered. However, 3.0% of Colorado wells tested and 0.1% of New Mexico wells tested exhibited a degree of SCP sufficient to potentially induce leakage outside the well. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Colorado; Groundwater quality; New Mexico; Oil and gas well integrity; Pennsylvania
语种	英语
scopus关键词	ground water; hydrocarbon; Article; casing vent flow; Colorado; environmental monitoring; environmental parameters; New Mexico; oil and gas field; Pennsylvania; physical parameters; priority journal; spillage; sustained casing pressure; United States; water quality; well integrity
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180026
作者单位	Research and Innovation Center, National Energy Technology Laboratory, Pittsburgh, PA 15236, United States; Leidos Research Support Team, Pittsburgh, PA 15236, United States; Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD 21205, United States; JLB Engineering, LLC, The Woodlands, TX 77380, United States; Department of Earth and Environmental Sciences, Dalhousie University, Halifax, NS B3H4J1, Canada; Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, United States
推荐引用方式 GB/T 7714	Lackey G.,Rajaram H.,Bolander J.,et al. Public data from three US states provide new insights into well integrity[J],2021,118(14).
APA	Lackey G..,Rajaram H..,Bolander J..,Sherwood O.A..,Ryan J.N..,...&Dilmore R.M..(2021).Public data from three US states provide new insights into well integrity.Proceedings of the National Academy of Sciences of the United States of America,118(14).
MLA	Lackey G.,et al."Public data from three US states provide new insights into well integrity".Proceedings of the National Academy of Sciences of the United States of America 118.14(2021).