Repository for Oil and Gas Energy Research (ROGER)

Abstract:
This paper addresses the techno-economic-environmental analysis of large-scale olefin production from shale gas in the major shale regions of the U.S. (including Appalachian, Gulf Coast, Mid-Continent, and Rocky Mountain regions) and investigates its environmental footprints. To decipher the true production costs and environmental impacts, we first develop shale gas supply and olefin production network models to estimate pipeline distances, numbers of wells, well-sites, and gathering systems needed in the near-and mid-term. Next, detailed process design, modeling, and integration methods for alternative technologies are developed. We conduct life cycle analysis (LCA) to systematically evaluate the energy-water-carbon nexus. Based on the economic and LCA results, we compare the influences of gas composition, project operating time, well lifetime, and the allocation method. The results indicate that the four shale regions considered would in total supply feedstocks for U.S. ethylene production for at least 130 years. However, only olefins produced from Gulf Coast and Mid-Continent regions demonstrate economic advantage ($668 per t and $255 per t) over ethylene in the current market. Based on the mass-based allocation approach, for the four shale regions evaluated, the energy consumption is 13.8-17.2, 14.3-16.7, 13.3-16.7, and 12.2-14.5 GJ per t olefins, and the freshwater footprint is 3.31-4.28, 5.34-5.65, 3.05-3.56, and 4.68-5.03 kg kg(-1) olefins, respectively. In addition, normalized GHG emissions indicate that shale gas can be categorized as a low-carbon feedstock (0.75-1.05 kg CO2-eq per kg) based on a mass-based allocation approach, or a high-carbon feedstock (1.24-2.13 kg CO2-eq per kg) based on an economic value-based allocation approach.

Abstract:
Shale gas development potentially contaminates both air and water compartments. To assist in governmental decision-making on future explorations, we reviewed scattered information on activities, emissions and concentrations related to shale gas development. We compared concentrations from monitoring programmes to quality standards as a first indication of environmental risks. Emissions could not be estimated accurately because of incomparable and insufficient data. Air and water concentrations range widely. Poor wastewater treatment posed the highest risk with concentrations exceeding both Natural Background Values (NBVs) by a factor 1000-10,000 and Lowest Quality Standards (LQSs) by a factor 10-100. Concentrations of salts, metals, volatile organic compounds (VOCs) and hydrocarbons exceeded aquatic ecotoxicological water standards. Future research must focus on measuring aerial and aquatic emissions of toxic chemicals, generalisation of experimental setups and measurement technics and further human and ecological risk assessment.

Abstract:
Hopke and Simis (Public Understanding of Science, online 4 October 2015) find that #fracking, the most popular of five shale-related hashtags analyzed from a 2013 period, is associated with pro-shale attitudes only 13% of the time and note that the dominant voice of the activist community, coupled with a lack of engagement from industry, is unexpected. This comment offers additional perspective on the sentiment- and actor-skewed result by noting that the term “fracking” is highly political, specifically because the spelling “frack” versus “frac” is associated with activism. Furthermore, in public speech, the industry tends to deemphasize the hydraulic fracturing process in favor of the product, consistent with the findings that #natgas is a relatively pro-industry hashtag.

Abstract:
When the shale gas is extracted, various fluids for hydraulic fracturing are used. They contain several hundred different chemical compounds. Many of them may have a negative effect on the environment and human health. Even though the chemical additives make up only 2% of the fluid volume, the large fluid amount used and the fact that most of these substances are highly toxic make them a potentially high threat to the environment. To reduce their negative environmental effect, it is necessary to identify all the compounds with the product safety data sheets and to define their toxicity levels. Their use should also be reduced as much as possible or they should be replaced with similar substances that are less toxic. The following study concerns the most important chemical additives used in the fracturing fluids during the shale gas extraction. It focuses on their properties and toxicity, and defines the problems related to the determination of microelements and macroelements present in samples with such complex matrices. Additionally, the risks related to their application and migration to soils, surface water, ground water and organisms are described.

Abstract:
According to the U.S. Energy Information Administration, shale gas will provide half of the United States’ domestic gas by 2035. The United States has already moved from being one of the world's largest importers of gas to being self-sufficient in less than a decade, bringing hundreds of thousands of jobs and attracting back companies that long ago left America in search of cheap manufacturing costs. But the increase in shale gas extraction has also had an environmental cost. There is clear scientific evidence of leaking shale gas wells and induced earthquakes, and in some areas a population increasingly turning against the industry. The technology of horizontal drilling and hydraulic fracturing that was developed in the United States is now being tried outside the United States, including in Europe, Argentina, and China. There are clear reasons why shale gas might be attractive to Europe. It may offer security of energy supply to some countries particularly dependent on Russian gas; it could stimulate growth and jobs; and it could supply a cleaner fuel than coal in power stations. However, prospective shale often underlies areas of high population density in Europe, and moreover, populations that are unfamiliar with onshore gas operations. The main challenge in Europe therefore is not mainly technological but for the industry to achieve a “social license” and for Government and regulations to be manifestly protecting the public and property.

Abstract:
As global energy demand increases, the rapid expansion of the unconventional fossil fuel sector has triggered an urgent need for social, economic and policy research to understand and predict how this sector affects host communities and how governance systems can respond to changes presented by this sector. In response to this need, this paper addresses three linked objectives. The first is to review the literature on regional impacts of energy extraction, presented in the form of a framework of hierarchical effects. The second is to consider how these are playing out differently in the context of conventional compared with unconventional fossil fuels. The third is to draw attention to the institutional avenues for addressing these impacts, including an overview of the lessons from existing research on the human and policy dimensions associated with conventional energy industries. In particular, we consider the importance of multi-stakeholder dialog, which plays an important role in how regions respond to the challenges brought about through extractive industries. Overall, we demonstrate that experiences from conventional energy development provide a useful starting point for navigating the human and policy dimensions of unconventional energy for host communities and discuss how these experiences differ when unconventional energy seeks to co-exist with other land uses such as agriculture. The paper draws attention to the dispersed nature of impacts (positive and negative) and how this may shape winners and losers from unconventional energy development, particularly in regions with pre-existing land uses such as agriculture.

Abstract:
Hydraulic fracturing, or ‘fracking’, involves the extraction of natural gas from shale formations deep underground using vertical and horizontal drilling technologies and vast quantities of chemically treated water injected into the wells under high pressure. Although commercial fracking has been underway in the USA since the 1990s, the industry is in its infancy elsewhere in the world. Rapid increases in gas production in the US have spurred interest in countries as far flung as the UK, China, Poland, Argentina and South Africa, although there is much uncertainty over potential gains and the environmental costs of the new technology (Buchan, 2013; European Commission, 2012a). In the UK, there are currently no companies actively fracking but several are undertaking exploratory drilling, and many policymakers, academics, environmental activists and energy industry specialists feel that the UK could be on the edge of a ‘fracking boom’. Some see fracking as a potential energy bonanza ensuring the UK’s energy security well into the future, while others fear that it could bring significant harm to the environment and public health. In this article, we explore several dimensions of these uncertainties generally, and assess specifically some of the implications for the UK water environment. We also suggest ways in which the UK could learn from the experiences of fracking in the USA.

Abstract:
This paper examines news media coverage of hydraulic fracturing in Canada over a five-year period in five newspapers. Hydraulic fracturing, or fracking, has reenergized the North American oil and gas market. This technology has increased economic growth, but it also comes with unknown and uncertain environmental and public health risks. Regulation of the fracking industry varies globally. In Canada there are three provinces that engage in large volume fracking and four provinces that have placed a moratorium on fracking. This paper demonstrates that the Canadian fracking story is about five frames: water pollution, economic benefits, uncertain risks, moratoriums, and energy independence. There is a difference between coverage in the two national newspapers as well as a difference in national and provincial coverage. In Nova Scotia, where fracking is banned, the media focuses primarily on environmental issues and benefits to the local economy. In Saskatchewan, where fracking for oil is an essential part of the economy, the media focuses on economic benefits and downplays other frames. Overall, across the five papers, the media coverage is highly selective and focuses on particular stories about the economy or the environment, but not both. Quelle est la chronique de la fracturation hydraulique au Canada?Cet article fait etat de la couverture mediatique liee a la fracturation hydraulique au Canada par cinq journaux sur une periode de cinq ans. La fracturation hydraulique a revitalise le marche nord-americain des hydrocarbures. Cette technologie favorise la croissance economique, mais comporte egalement des risques ecologiques et sanitaires inconnus et incertains. La reglementation regissant l'industrie de la fracturation varie selon les pays. l'echelle canadienne, trois provinces ont realise d'importantes operations de fracturation et quatre provinces ont impose un moratoire a la fracturation hydraulique. Cet article montre que le cadrage mediatique de la fracturation hydraulique repose sur cinq thematiques:la pollution hydrique, les retombees economiques, l'incertitude liee aux risques, les moratoires et la souverainete energetique. Le cadrage mediatique varie entre les deux journaux nationaux ainsi qu'entre les medias nationaux et provinciaux. En Nouvelle-Ecosse, oU la fracturation est interdite, les medias mettent l'accent sur les questions environnementales et les retombees pour l'economie locale. En Saskatchewan, oU la fracturation pour extraire du petrole joue un role economique primordial, les medias se concentrent sur les retombees economiques et minorent l'importance des autres thematiques. Dans l'ensemble, les cinq journaux appliquent un filtre selectif dans le traitement du sujet et publient des reportages specifiques portant sur l'economie ou sur l'environnement, mais pas les deux.

Abstract:
Despite enthusiasm about new gas reserves, shale gas has not come to Poland without controversies. This study examines how shale gas has been framed as a public issue by political and business elites, experts, local communities and civil society organizations. Through a frame analysis, we found three main frames about shale gas: shale gas as a novel economic resource, as a strategic resource for energy security and as a threat. However, only the first two frames, proposed by political and business elites, have shaped the policy process. The third frame, constructed by local actors and civil society groups, has had minimal impact. We explain this exclusion drawing on the deficit model of risk communication. This approach reveals that Polish experts, and business and political actors, during their interactions with local groups, have framed proponents of the threat frame as ‘incompetent actors’ effectively excluding the threat frame from policy processes.

Abstract:
This letter presents a distributive environmental justice analysis of unconventional gas development in the area of Pennsylvania lying over the Marcellus Shale, the largest shale gas formation in play in the United States. The extraction of shale gas using unconventional wells, which are hydraulically fractured (fracking), has increased dramatically since 2005. As the number of wells has grown, so have concerns about the potential public health effects on nearby communities. These concerns make shale gas development an environmental justice issue. This letter examines whether the hazards associated with proximity to wells and the economic benefits of shale gas production are fairly distributed. We distinguish two types of distributive environmental justice: traditional and benefit sharing . We ask the traditional question: are there a disproportionate number of minority or low-income residents in areas near to unconventional wells in Pennsylvania? However, we extend this analysis in two ways: we examine income distribution and level of education; and we compare before and after shale gas development. This contributes to discussions of benefit sharing by showing how the income distribution of the population has changed. We use a binary dasymetric technique to remap the data from the 2000 US Census and the 2009–2013 American Communities Survey and combine that data with a buffer containment analysis of unconventional wells to compare the characteristics of the population living nearer to unconventional wells with those further away before and after shale gas development. Our analysis indicates that there is no evidence of traditional distributive environmental injustice: there is not a disproportionate number of minority or low-income residents in areas near to unconventional wells. However, our analysis is consistent with the claim that there is benefit sharing distributive environmental injustice: the income distribution of the population nearer to shale gas wells has not been transformed since shale gas development.

Abstract:
Energy issues are very important for our civilization. Taking into account the perspective of sustainability a lot of attention is devoted to the sources of primary Energy characterized with low emission. Among them shale gas has gained in importance as the primary energy source. The paper presents the role of shale gas in the implementation of the main paradigm of sustainable development, i.e. the intergenerational equity. As the reference, the necessity of implementing water intakes monitoring has been pointed out.

Abstract:
Shale formations have been recently treated only as source rocks and sealing packages mainly of conventional deposits. At present shales, which have a considerable concentration of highly mature organic matter appearing in complexes of over 30 m thick are used as unconventional sources for natural gas production with the use of advanced drilling technologies. Natural gas production in such rock formations necessitates performing a horizontal section in the borehole and a big number of hydraulic fracturing jobs. The unconventional shale gas deposits have been prospected also in Poland for a couple of years. Exploration works mainly concentrate on a vast area passing from Pomerania through Mazowsze to the Lublin region in Poland. The analysis of the geologic analyses reveals that the most perspective are shales in the Lower Paleozoic at a depth of 2500 m in the eastern part to about 4000 m in the western part of the area. The paper is focused on the quantitative and qualitative evaluation of environmental impact of natural gas exploration works from unconventional deposits. Special attention was paid to the hydraulic fracturing jobs in shales, which create particular hazard for water and soil environment. These hazards already appear at the stage of preliminary works, when big quantities of chemicals and water for frac jobs are stored in the rig area, and then, during realization of works, when the spent hydraulic fracturing fluid may penetrate the water-bearing horizons in the caprock. The composition of fracturing fluid used in Gapowo B-1A well are given along with the results of chemical analyses of a few parts of spent fracturing fluid samples pumped out from the borehole. The fluid turned out to be high in salt (high specific electrolyte conductance (SEC) and total dissolved substances (TDS) and a high toxicity for most of the living organisms). For this reason the spent fracturing fluid should not enter the environment without control.

Abstract:
There is growing recognition of the need to understand public attitudes to energy sources, such as shale gas, and to feed these into decision-making. This study represents the first detailed UK experimental survey of public perceptions of shale gas fracking, including analysis of the effects of different messages and the relative influence of different audience, message and contextual factors on support and risk perceptions in respect of shale gas fracking. Using an online survey (N = 1457) of the UK public, we find considerable ambivalence about shale gas, but also greater awareness of potential risks than benefits. Prior knowledge is associated with more favourable attitudes, although demographics, political affiliation and environmental values are strongest influences on perceptions. When provided with environmental or economic information about shale gas, participants became more positive – irrespective of their prior values or whether information is framed in terms of losses or gains. As expected, prior attitudes predict how information is received, with more attitude change amongst the most ambivalent respondents. We conclude that additional information about shale gas is more likely to be effective changing attitudes if focussed on this ’undecided’ group. Studies of this type are important for policy makers and industry alike.

Abstract:
Spatial gaps in environmental monitoring have important consequences for public policy and regulation of new industrial developments. In the case of Marcellus Shale gas extraction, a water-intensive new form of energy production that is taking place in the state of Pennsylvania (USA), the perception of large gaps in government water monitoring efforts have motivated numerous civil society organizations (CSOs) to initiate their own monitoring programs. Using geospatial mapping, this study reveals that nearly half of the watersheds in the region lack government water monitoring, and CSOs are the sole source of continuous or frequent monitoring data in 22% of the watersheds. While many watersheds remain unmonitored, the gaps do not map on to demographic characteristics typically associated with environmental injustice. This study probes both the reasons for and the implications of the gaps in watershed monitoring, drawing conclusions about the promise and limitations of citizen science.

Abstract:
Through comprehensive investigation of the environmental issues in shale gas development in the US, the environmental impacts of hydraulic fracturing in shale gas development are summarized to provide reference for the shale gas development and management in China. The environmental risks of large-scale commercial shale gas development in the United States include water consumption, water contamination, seismic inducement and air pollution. Compared to conventional oil and gas production and other energy producing industries, shale gas development is not exactly “high-water-consuming” in terms of water consuming intensity. Its water consumption, accounting for a small proportion of the total regional water consumption, will not add much more stress on water supply. In terms of water pollution, hydraulic fracturing is unlikely to cause fractures to directly connect reservoir to the shallow aquifer, the known contamination cases are most likely related to faulty well completion, therefore well integrity is the key to the prevention of contamination; the flow-back fluids in large scale shale gas development have the characteristics of large quantity, many kinds of pollutants and complex composition, thus improper treatment would lead to serious contamination, and continuous monitoring and assessment of the pollutants are necessary. Existing evidence shows that hydraulic fracturing is unlikely to trigger destructive earthquakes. Greenhouse gas emissions in the life cycle of shale gas wells were estimated differently, but no doubt more effective measures should be taken to minimize leakage. The research priorities include contamination monitoring program design, detection indicators, moving pattern of hydraulic fracturing fluid and formation fluid, the effects of shale gas development on high salinity formation water and methane migration, and treatment and re-use of flow-back fluid.

Abstract:
Shale gas involves a technology which is a controversial method of energy production mainly because there are uncertainties about the possible environmental and human health impacts. The article aims to identify the level of knowledge in relation to the impact of environmental risks attached to shale gas exploitation in the academic and scientifi c community. It does so by employing the expert elicitation approach which has the benefi t of quantifying the judgment of individual experts. We have revealed a consistency among researchers in assessing the level of uncertainty of the main environmental risks and a preferred policy option in dealing with uncertainty, a vow for improved transparency, openness and ease of access to information. Shale gas policy-making in Europe needs a science- based approach as science informs policy by delivering objective and reliable knowledge. The article concludes that developing a comprehensive approach based on scientifi c data and an appropriate regulatory framework will provide a path forward for the future development of contested policies like shale gas.

Abstract:
Summary If unconventional gas development (UGD) continues to expand in Australia, the potential health and environmental impacts should be adequately addressed and preventive public health measures should be implemented. The United States has embraced UGD and has decades of experience that could be beneficial to Australia as stakeholders debate the potential benefits and harms of the technique. Additional research on the health impacts of UGD is necessary. Baseline and trend morbidity and mortality data need to be collected to assess changes in population health over time. To date, few health or epidemiological studies have been conducted, so it remains difficult to assess actual health outcomes. In the absence of scientific consensus, there are two possible risks: failing to develop unconventional natural gas when the harms are manageable; or developing it when the harms are substantial. Many government bodies around the world have chosen to minimise the risk of the latter until the impacts of UGD are better understood. Policies should be informed by empirical evidence based on actual experience rather than assurance of best practices. There is a strong rationale for precautionary measures based on the health and environmental risks identified in the scientific literature.

Abstract:
Unconventional gas development (UGD) is growing rapidly in the United States. Drawing on insights from risk perception and risk governance theories and recent public opinion surveys, we find that UGD is an emerging technology that is likely to be perceived as risky, even though objective risk assessments suggest that risks are low and controllable through best risk management practices. Perceived risk varies significantly depending on the state and locality but perceptions of risk appear to be increasing as the technology is used more widely in the United States and as organized opponents of the technology intensify their efforts. Risk perceptions are attenuated somewhat because of the perceived benefits of UGD and compensation schemes for individuals and communities. The types of triggering events necessary for large-scale social amplification and stigmatization have not yet occurred but awareness of UGD is growing and organized opposition has been sufficient to cause prohibitions of UGD in some U.S. states and localities. Additional directions for social science research on public reactions to UGD are recommended.

Abstract:
The probability that new hydraulically fractured wells drilled within the area of New York underlain by the Marcellus Shale will intersect an existing wellbore is calculated using a statistical model, which incorporates: the depth of a new fracturing well, the vertical growth of induced fractures, and the depths and locations of existing nearby wells. The model first calculates the probability of encountering an existing well in plan view and combines this with the probability of an existing well-being at sufficient depth to intersect the fractured region. Average probability estimates for the entire region of New York underlain by the Marcellus Shale range from 0.00% to 3.45% based upon the input parameters used. The largest contributing parameter on the probability value calculated is the nearby density of wells meaning that due diligence by oil and gas companies during construction in identifying all nearby wells will have the greatest effect in reducing the probability of interwellbore communication.

Abstract:
This paper describes a fully independent public participation and review process on the environmental, economic, health, community and social risks and benefits of hydraulic fracturing for the development of unconventional gas and oil resources. We describe the approach taken to maximise public engagement in the process and how that participation informed the work of an independent panel charged with examining the scientific evidence and related legal issues. The major findings from the review are presented, including a risk matrix which summarises the frequency, severity and mitigation measures for 16 potential hazards associated with hydraulic fracturing, as they may pertain to the province of Nova Scotia in Canada. We discuss the complexity of managing public perceptions of novel risks such as hydraulic fracturing and conclude with brief observations on the contribution of the review to public policy.

Abstract:
Because of its resource potential and clean burning advantages, the development of shale gas can significantly increase the supply of cleaner energy while offering the associated benefits. To foster shale gas development, many policy incentives have been introduced in China. However, the current incentives have not been sufficiently aggressive, and the shale gas industry has been slow to develop. Existing policies thus need to be further improved. To provide effective support for decision makers in China, a technical and economic evaluation is performed in this study to explore the profitability of shale gas production in pilot zones. The results show that shale gas production is subeconomic under the current technical and economic conditions. Based on this evaluation, a policy analysis is conducted to investigate the profitability improvement offered by the major policies available in China to elucidate a path toward improving incentive policies. The results indicate that policy instruments related to gas prices, financial subsidies, corporate income taxes or combinations thereof could be used as priority options to improve policy incentives. Based on these results, recommendations are presented to improve the current incentive polices aimed at accelerating shale gas development.

Abstract:
The oil crisis and the successful commercial exploitation of shale gas in America have made shale gas become the focus of global energy industry. Shale gas industry will be developed mainly in the future. Sichuan has natural geographical advantages and becomes the main battlefield of shale gas in China. So it is necessary and urgent to analyze the current situation of Sichuan shale gas. This paper introduces the status quo of shale gas in Sichuan, and systematically analyzes the industrial environment for developing Sichuan shale gas from four aspects of policy, economy, society, technology. Then the issues facing Sichuan are discussed. Finally, the paper puts forward some corresponding recommendations to provide certain references to the development of shale gas industry in Sichuan.

Abstract:
The prospect of ‘fracking’ for shale gas in South Africa's Karoo has generated heated exchanges in public forums and in the media. This article seeks to understand why common ground in the debate has proved to be so elusive. The article divides the parties to the impasse into three camps and examines the ethical positions which seem to inform each faction's standpoint. The article finds that the tensions between the main protagonists’ positions are due to two related ethical ‘faultlines’. The first revolves around the inherent incompatibility of consequentialism with moral absolutism. The second relates to tensions between nature as an instrumental good, and an ethic that treats nature as an intrinsic good. The discussion considers the merits of cost–benefit analysis and whether, at the very least, exploration for shale gas should be permitted. The article concludes by weighing up the preconditions for a rapprochement being reached between the contending factions.

Abstract:
The rapid expansion of shale gas exploration worldwide is a significant source of environmental controversy. Successful shale gas policy-making is dependent upon a clear understanding of the dynamics of competing stakeholder perspectives on these issues, and so methods are needed to delineate the areas of agreement and conflict that emerge. This empirical study, based in the United Kingdom, examines emergent perspectives on a range of environmental, health and socio-economic impacts associated with shale gas fracking using Q-methodology: a combined qualitative–quantitative approach. The analysis reveals three typologies of perspectives amongst key industry, civil society and non-affiliated citizen stakeholders; subsequently contextualised in relation to Dryzek's typology of environmental discourses. These are labelled (A) ‘Don't trust the fossil fuels industry: campaign for renewables’ (mediating between sustainable development and democratic pragmatism discourses), (B) ‘Shale gas is a bridge fuel: economic growth and environmental scepticism’ (mediating between economic rationalism and ecological modernisation discourses) and (C) ‘Take place protective action and legislate in the public interest’ (reflecting a discourse of administrative rationalism). The implications of these competing discourses for nascent shale gas policy in the UK are discussed in light of recent government public consultation on changes to national planning policy.

Abstract:
New technologies and rising energy prices have resulted in many energy companies investing significant amounts of capital in rural America. Much of the recent focus of energy companies has been on the development of shale oil and natural gas. We examine the differences in levels of support and opposition to shale oil and gas development, building on the literatures of the growth-machine coalition, polluter-industrial complex, and environmental justice. Specifically, we examine different frames of shale development held by government leaders and the public who reside above the New Albany shale play in Southern Illinois and Northwest Kentucky. Using a combination of interview, survey, and participant observation data, we find that government officials emphasize economic growth and many support shale development. While most government leaders claimed that there was not a major division in their communities about shale development, we found the public to be split, with a large countercoalition to shale development in existence.

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Abstract:
Scenarios for potential shale gas development were modelled for the Baltic Basin in Northern Poland for the period 2015–2030 using the land allocation model EUCS100. The main aims were to assess the associated land use requirements, conflicts with existing land use, and the influence of legislation on the environmental impact. The factors involved in estimating the suitability for placement of shale gas well pads were analysed, as well as the potential land and water requirements to define 2 technology-based scenarios, representing the highest and lowest potential environmental impact. 2 different legislative frameworks (current and restrictive) were also assessed, to give 4 combined scenarios altogether. Land consumption and allocation patterns of well pads varied substantially according to the modelled scenario. Potential landscape fragmentation and conflicts with other land users depended mainly on development rate, well pad density, existing land-use patterns, and geology. Highly complex landscapes presented numerous barriers to drilling activities, restricting the potential development patterns. The land used for shale gas development could represent a significant percentage of overall land take within the shale play. The adoption of appropriate legislation, especially the protection of natural areas and water resources, is therefore essential to minimise the related environmental impact.

Abstract:
Hydraulic fracturing and related ground water issues are growing features in public discourse. Few have given much attention to surface impacts from shale gas development, which result from building necessary surface infrastructure. One way to reduce future impacts from gas surface development without radically changing industry practice is by formulating simple, conservation-oriented planning guidelines. We explore how four such guidelines affect the locations of well pads, access roads, and gathering pipelines on state lands in Pennsylvania. Our four guidelines aim to (1) reduce impacts on water, reduce impacts from (2) gathering pipelines and (3) access roads, and (4) reduce impacts on forests. We assessed whether the use of such guidelines accompanies tradeoffs among impacts, and if any guidelines perform better than others at avoiding impacts. We find that impacts are mostly synergistic, such that avoiding one impact will result in avoiding others. However, we found that avoiding forest fragmentation may result in increased impacts on other environmental features. We also found that single simple planning guidelines can be effective in targeted situations, but no one guideline was universally optimal in avoiding all impacts. As such, we suggest that when multiple environmental features are important in an area, more comprehensive planning strategies and tools should be used.

Abstract:
Recent large-scale development of oil and gas from low-permeability unconventional formations (e.g., shales, tight sands, coal seams) has raised concern about potential environmental impacts. Legacy oil and gas wells co-located with that new development represent , if left improperly sealed, a potential pathways for unwanted migration of fluids (brine, drilling and stimulation fluids, oil and gas). Uncertainty in the number, location, and abandonment state of legacy wells hinders environmental assessment of exploration and production activity. The objective of this study is to apply publicly available information on Pennsylvania oil and gas wells to better understand their potential to serve as pathways for unwanted fluid migration. This study presents a synthesis of historical reports and digital well records to provide insights into spatial and temporal trends in oil and gas development. Areas with higher density of wells abandoned prior to mid twentieth century, when more modern well sealing requirements took effect in Pennsylvania, and areas where conventional oil and gas production penetrated to or through intervals that may be affected by new Marcellus shale development are identified. This information may help to address questions of environmental risk related to new extraction activities.

Abstract:
A constant refrain in both public discourse and academic research on shale gas development has been the necessity for 'sound science' to govern policy decisions. Rare, however, is the recommendation that effective policy on this topic also include 'sound moral thought'. I argue that: (1) philosophy (particularly moral thought and ethical reasoning) and science must work in tandem for making good policy decisions related to shale gas development, and (2) this realisation is essential for policy-makers, journalists, researchers, educators and the public. By examining the range of normative claims offered within academic and public discourse, the variation in claims across contexts and the degree to which the normative arguments are well-supported, I illustrate the important role increased attention to moral thought could play in forwarding policy construction on shale gas development. Finally, I offer recommendations for how policy-makers, journalists, researchers and educators can more actively acknowledge the importance of both science and moral thought in policy-making related to shale gas development.

Abstract:
The natural gas extraction method of high-volume hydraulic fracturing (HVHF) has a significant truck transportation component, with estimates ranging from 625 to 1,148 heavy truck trips for equipment, materials, and waste movement for each well drilled in the Marcellus Shale. ArcGIS Network Analyst was used to analyze the environmental impacts of transporting sand and water to, and waste from, Pennsylvania wells from 2011 to 2013. The locations of wells, resource supply areas, and waste disposal facilities served as a series of origin and destination pairings for probable truck routes. Material and waste volumes per well were used to estimate the truck counts assigned to each route, leading to estimates of truck traffic by road segment. Emission loads and energy usage were calculated with the geospatial intermodal freight transport model. Simulation results of 22-ton loads estimated 4.4 million one-way truck trips totaling nearly 86.5 million vehicle miles and producing nearly 19 Mg of particulate matter and 745 Mg of nitrogen oxides, among other pollutants. Maps showing road segments with high truck counts identified areas of potential health and infrastructure impacts. On-site recycling of wastes offset an estimated 842,678 truck trips and associated emissions. Case studies developed during this project pointed to the need for better data collection and data distribution efforts in states extracting gas and those considering whether to allow HVHF operations. The results will help policy analysts and environmental planners to understand and evaluate the environmental, health, and economic impacts (pro and con) associated with the movement of HVHF equipment and materials.

Abstract:
Hydraulic fracturing, or fracking, involves injecting large amounts of sand, water, and chemicals deep underground at high pressures to extract natural gas from rock formations. At the same time, fracking also generates by-products, such as dust, silica, and other gases. While some groups consider fracking to represent a health risk,1 others suggest that fracking poses little risk to the public.2 To date, most studies have measured emissions from the wells and estimated exposure and its health impact based on the distance from the wells,3,4 but none have addressed potential health effects associated with specific elements impacted by fracking.

Abstract:
There is at present much interest in unconventional sources of natural gas, especially in shale gas which is obtained by hydraulic fracturing, or ‘fracking’. Boreholes are drilled and then lined with steel tubes so that a mixture of water and sand with small quantities of chemicals – the fracking fluid – can be pumped into them at very high pressure. The sand grains that wedge into the cracks induced in the shale rock by a ‘perforating gun’ then releases gas which returns up the tubes. In the United Kingdom (UK) exploratory drilling is at an early stage, with licences being issued to drill a limited number of test boreholes around the country. But such activities are already meeting community resistance and controversy. Like all energy technologies it exhibits unwanted ‘side-effects’; these simply differ in their level of severity between the various options. Shale gas may make, for example, a contribution to attaining the UK's statutory ‘greenhouse gas’ emissions targets, but only if appropriate and robust regulations are enforced. The benefits and disadvantages of shale gas fracking are therefore discussed in order to illustrate a ‘balance sheet’ approach. It is also argued that it is desirable to bring together experts from a range of disciplines in order to carry out energy technology assessments. That should draw on and interact with national and local stakeholders: ‘actors’ both large and small. Community engagement in a genuinely participative process – where the government is prepared to change course in response to the evidence and public opinion - will consequently be critically important for the adoption of any new energy option that might meet the needs of a low carbon future.

Abstract:
The introduction of new energy technologies may lead to public resistance and contestation. It is often argued that this phenomenon is caused by an inadequate inclusion of relevant public values in the design of technology. In this paper we examine the applicability of the value sensitive design (VSD) approach. While VSD was primarily introduced for incorporating values in technological design, our focus in this paper is expanded towards the design of the institutions surrounding these technologies, as well as the design of stakeholder participation. One important methodological challenge of VSD is to identify the relevant values related to new technological developments. In this paper, we argue that the public debate can form a rich source from which to retrieve the values at stake. To demonstrate this, we have examined the arguments used in the public debate regarding the exploration and exploitation of shale gas in the Netherlands. We identified two important sets of the underlying values, namely substantive and procedural values. This paper concludes with two key findings. Firstly, contrary to what is often suggested in the literature, both proponents and opponents seem to endorse the same values. Secondly, contestation seems to arise in the precise operationalization of these values among the different stakeholders. In other words, contestation in the Dutch shale gas debate does not arise from inter-value conflict but rather from intra-value conflicts. This multi-interpretability should be incorporated in VSD processes.

Abstract:
The prospect of fracking in the United Kingdom has been accompanied by significant public unease. We outline how the policy debate is being framed by UK institutional actors, finding evidence of a dominant discourse in which the policy approach is defined through a deficit model of public understanding of science and in which a technical approach to feasibility and safety is deemed as sufficient grounds for good policymaking. Deploying a deliberative focus group methodology with lay publics across different sites in the north of England, we find that these institutional framings are poorly aligned with participants’ responses. We find that unease regularly overflows the focus on safety and feasibility and cannot be satisfactorily explained by a lack of understanding on the part of participants. We find that scholarship from science and technology studies productively elucidates our participants’ largely sceptical positions, and orientates strategies for responding to them more effectively.

Abstract:
The development of horizontal hydraulic fracture drilling or “fracking” has allowed for the extraction of deep, unconventional shale gas deposits in various shale seams throughout the USA. One such shale seam, the Marcellus shale, extends through New York State, Pennsylvania, and West Virginia, where shale gas development has rapidly increased within the last decade. This has created a boom of economic activity surrounding the energy industry. However, this bounty comes with risks to environmental and public health and has led to divisive community polarization over the issue in the Marcellus shale region. In the face of potential environmental and social disruption, and a great deal of controversy surrounding “fracking” the oil and gas industry has had to undertake a myriad of public relations initiatives to legitimize their extraction efforts in the Marcellus shale region, and to frame the shale gas boom in a positive light to stakeholders. This article investigates one such public relations initiative, the Energy in Depth (EID) Northeast Marcellus Initiative. Through qualitative content analysis of EID's online web material, this article examines the ways in which the industry presents and frames natural gas development to the general public. Through appeals to patriotism, the use of environmental imagery, and a claimed commitment to scientific reason, the oil and gas industry uses EID to frame the shale gas extraction process in a positive light, all the while framing those who question or oppose the processes of shale gas extraction as irrational obstructionists.

Abstract:
Shifting markets can cause unexpected, stochastic changes in rural landscapes that may take local communities by surprise. Preferential siting of new industrial facilities in poor areas or in areas with few regulatory restrictions can have implications for environmental sustainability, human health, and social justice. This study focuses on frac sand mining—the mining of high-quality silica sand used in hydraulic fracturing processes for gas and oil extraction. Frac sand mining gained prominence in the 2000s in the upper midwestern United States where nonmetallic mining is regulated primarily by local zoning. I asked whether frac sand mines were more commonly sited in rural townships without formal zoning regulations or planning processes than in those that undertook zoning and planning before the frac sand boom. I also asked if mine prevalence was correlated with socioeconomic differences across townships. After creating a probability surface to map areas most suitable for frac sand mine occurrence, I developed neutral landscape models from which to compare actual mine distributions in zoned and unzoned areas at three different spatial extents. Mines were significantly clustered in unzoned jurisdictions at the statewide level and in 7 of the 8 counties with at least three frac sand mines and some unzoned land. Subsequent regression analyses showed mine prevalence to be uncorrelated with land value, tax rate, or per capita income, but correlated with remoteness and zoning. The predicted mine count in unzoned townships was over two times higher than that in zoned townships. However, the county with the most mines by far was under a county zoning ordinance, perhaps indicating industry preferences for locations with clear, homogenous rules over patchwork regulation. Rural communities can use the case of frac sand mining as motivation to discuss and plan for sudden land-use predicaments, rather than wait to grapple with unfamiliar legal processes during a period of intense conflict.

Abstract:
In this work, the life cycle economic and environmental optimization of shale gas supply chain network design and operations is addressed. The proposed model covers the well-to-wire life cycle of electricity generated from shale gas, consisting of a number of stages including freshwater acquisition, shale well drilling, hydraulic fracturing and completion, shale gas production, wastewater management, shale gas processing, electricity generation as well as transportation and storage. A functional-unit based life cycle optimization problem for a cooperative shale gas supply chain is formulated as a multiobjective nonconvex mixed-integer nonlinear programming (MINLP) problem. The resulting Pareto-optimal frontier reveals the trade-off between the economic and environmental objectives. A case study based on Marcellus shale play shows that the greenhouse gas emission of electricity generated from shale gas ranges from 433 to 499 kg CO(2)e/MWh, and the levelized cost of electricity ranges from $69 to $91/MWh. A global optimization algorithm is also presented to improve computational efficiency.

Abstract:
Development of shale gas resources using hydraulic fracturing has dramatically increased U.S. gas production, but also created new needs for risk analysis and governance. Risk analysis for an emerging technology has traditionally relied on experts with knowledge of the technology and its anticipated impacts. But today it is accepted that input from non-expert interested and affected parties (IAPs) is also essential. We present a novel method to elicit concerns from IAPs about the development of shale gas resources. We used an Internet-based snowball sample to identify IAPs and an open-ended prompt to gather their concerns. Reported concerns included potential consequences for environmental, social, and health systems, as well as hazards, hazardous events, precursors to hazards, risk amplifiers, and issues concerning the effective and fair governance of the risks. Some concerns raised have not been addressed in expert-led analyses of shale gas risks. Long-term consequences such as disruptions to economic activities, and governance issues such as regulatory capacity, were more prominent in the responses than in expert analyses. These findings show how engagement with interested and affected parties can elucidate key issues for risk governance in shale gas development. The method can also be applied to other emerging energy development issues.

Abstract:
The spatial footprint of unconventional (hydraulic fracturing) and conventional oil and gas development in the Marcellus Shale region of the State of Pennsylvania was digitized from high-resolution, ortho-rectified, digital aerial photography, from 2004 to 2010. We used these data to measure the spatial extent of oil and gas development and to assess the exposure of the extant natural resources across the landscape of the watersheds in the study area. We found that either form of development: (1) occurred in ~50% of the 930 watersheds that defined the study area; (2) was closer to streams than the recommended safe distance in ~50% of the watersheds; (3) was in some places closer to impaired streams and state-defined wildland trout streams than the recommended safe distance; (4) was within 10 upstream kilometers of surface drinking water intakes in ~45% of the watersheds that had surface drinking water intakes; (5) occurred in ~10% of state-defined exceptional value watersheds; (6) occurred in ~30% of the watersheds with resident populations defined as disproportionately exposed to pollutants; (7) tended to occur at interior forest locations; and (8) had >100 residents within 3 km for ~30% of the unconventional oil and gas development sites. Further, we found that exposure to the potential effects of landscape disturbance attributable to conventional oil and gas development was more prevalent than its unconventional counterpart.

Abstract:
Governmental agencies, regulators, health professionals, and the public are faced with understanding and responding to new development practices and conditions in their local and regional environment. While hydraulic fracking (fracking) for shale gas has been practiced for over 50 years in some states, it is a relatively recent event in the northeastern United States. Providing environmental health information to the public about fracking requires understanding both the knowledge base and the perceptions of the public. The knowledge, perceptions, and concerns of college students about fracking were examined. Students were interviewed at Rutgers University in New Jersey, a state without any fracking, although fracking occurs in nearby Pennsylvania. Objectives were to determine (1) knowledge about fracking, (2) rating of concerns, (3) trusted information sources, (4) importance of fracking relative to other energy sources, and (5) the effect of a 15-min lecture and discussion on these aspects. On the second survey, students improved on their knowledge (except the components used for fracking), and their ratings changed for some concerns, perceived benefits, and trusted information sources. There was no change in support for further development of natural gas, but support for solar, wind, and wave energy decreased. Data suggest that students' knowledge and perceptions change with exposure to information, but many of these changes were due to students using the Internet to look up information immediately after the initial survey and lecture. Class discussions indicated a general lack of trust for several information sources available on the Web.

Abstract:
The United States shale gas boom has precipitated global interest in the development of unconventional oil and gas resources. Recently, government ministers in the United Kingdom started granting licenses that will enable companies to begin initial exploration for shale gas. Meanwhile, concern is increasing among the scientific community about the potential impacts of shale gas and other types of unconventional natural gas development (UGD) on human health and the environment. Although significant data gaps remain, there has been a surge in the number of articles appearing in the scientific literature, nearly three-quarters of which has been published since the beginning of 2013. Important lessons can be drawn from the UGD experience in the United States. Here we explore these considerations and argue that shale gas development policies in the UK and elsewhere should be informed by empirical evidence generated on environmental, public health, and social risks. Additionally, policy decisions should take into account the measured effectiveness of harm reduction strategies as opposed to hypothetical scenarios and purported best practices that lack empirical support.

Abstract:
In modeling and prediction of natural gas fracking pad landscapes in the Marcellus Shale region, USA, the author asserts that landscape and environmental characteristics are the driving factors behind the siting of natural gas pads in the southwestern area of the Marcellus Shale, Pennsylvania, USA. In the article, the author largely dismisses the importance of geology for site prediction. Although the study is useful for understanding landscape characteristics in a small area of the Marcellus Shale, his premise that “the key variables for natural gas fracking can be landscape and environmental variables rather than geological variables” is flawed and thus could lead to erroneous assumptions when creating land use plans. A more reasonable assumption is that the surface siting of natural gas wells is secondary to geologic considerations, as the current topography bears little influence on the geology.

Abstract:
The quality and availability of unconventional oil and gas (O&G) data in the United States have never been compared methodically state-to-state. By conducting such an assessment, this study seeks to better understand private and publicly sourced data variability and to identify data availability gaps. We developed an exploratory data-grading tool - Data Accessibility and Usability Index (DAUI) - to guide the review of O&G data quality. Between July and October 2013, we requested, collected, and assessed 5 categories of unconventional O&G data (wells drilled, violations, production, waste, and Class II disposal wells) from 10 states with active drilling activity. We based our assessment on eight data quality parameters (accessibility, usability, point location, completeness, metadata, agency responsiveness, accuracy, and cost). Using the DAUI, two authors graded the 10 states and then averaged their scores. The average score received across all states, data categories, and parameters was 67.1 out of 100, largely insufficient for proper data transparency. By state, Pennsylvania received the highest average ( = 93.5) and ranked first in all but one data category. The lowest scoring state was Texas ( = 44) largely due to its policy of charging for certain data. This article discusses the various reasons for scores received, as well as methodological limitations of the assessment metrics. We argue that the significant variability of unconventional O&G data—and its availability to the public—is a barrier to regulatory and industry transparency. The lack of transparency also impacts public education and broader participation in industry governance. This study supports the need to develop a set of data best management practices (BMPs) for state regulatory agencies and the O&G industry, and suggests potential BMPs for this purpose.

Abstract:
The Appalachian Basin is home to three major shales, the Upper Devonian, Marcellus, and Utica. Together, they contain significant quantities of tight oil, gas, and mixed hydrocarbons. The Marcellus alone is estimated to contain upwards of 500 trillion cubic feet of natural gas. The extraction of these deposits is facilitated by a combination of horizontal drilling and slick water stimulation (e.g., hydraulic fracturing) or “fracking.” The process of fracking requires large volumes of water, proppant, and chemicals as well as a large well pad (3–7 acres) and an extensive network of gathering and transmission pipelines. Drilling can generate about 1,000 tons of drill cuttings depending on the depth of the formation and the length of the horizontal bore. The flowback and produced waters that return to the surface during production are high in total dissolved solids (TDS, 60,000–350,000 mg L−1) and contain halides (e.g., chloride, bromide, fluoride), strontium, barium, and often naturally occurring radioactive materials (NORMs) as well as organics. The condensate tanks used to store these fluids can off gas a plethora of volatile organic compounds. The waste water, with its high TDS may be recycled, treated, or disposed of through deep well injection. Where allowed, open impoundments used for recycling are a source of air borne contamination as they are often aerated. The gas may be “dry” (mostly methane) or “wet,” the latter containing a mixture of light hydrocarbons and liquids that need to be separated from the methane. Although the wells can produce significant quantities of natural gas, from 2–7 bcf, their initial decline rates are significant (50–75%) and may cease to be economic within a few years. This review presents an overview of unconventional gas extraction highlighting the environmental impacts and challenges.

Abstract:
Hydraulic fracturing (HF) is a focal topic in discussions about domestic energy production, yet the American public is largely unfamiliar and undecided about the practice. This study sheds light on how individuals may come to understand hydraulic fracturing as this unconventional production technology becomes more prominent in the United States. For the study, a thorough search of HF photographs was performed, and a systematic evaluation of 40 images using an online experimental design involving participants was conducted. Key indicators of hydraulic fracturing support and beliefs were identified. Participants showed diversity in their support for the practice, with 47 percent expressing low support, 22 percent high support, and 31 percent undecided. Support for HF was positively associated with beliefs that hydraulic fracturing is primarily an economic issue and negatively associated with beliefs that it is an environmental issue. Level of support was also investigated as a perceptual filter that facilitates biased issue perceptions and affective evaluations of economic benefit and environmental cost frames presented in visual content of hydraulic fracturing. Results suggested an interactive relationship between visual framing and level of support, pointing to a substantial barrier to common understanding about the issue that strategic communicators should consider.

Abstract:
Huge quantities of unconventional U.S. shale gas augur nothing less than a shift in the global order. An appraisal of global energy trends suggests that the U.S., at the cusp of attaining energy self-sufficiency, should lean more toward a strategy of maintaining energy stability than wielding its new clout in the service of broader geopolitical or economic objectives.

Abstract:
The data provided by the PA DEP are incomplete because confidential data are not released. It is impossible to make firm conclusions about water quality impacts when data availability is limited. Nonetheless, the PA experience appears to be characterized by a low rate of problems per gas well or unit of gas produced. Only about 160 of the complaints from homeowners about groundwater to the PA DEP between 2008 and 2012 were problems attributed to oil and gas activity—and only half of these were caused by companies known to drill unconventional shale wells. These problematic wells in turn represent only 0.1 to 1% of the unconventional shale gas wells drilled in that time period (Brantley et al. 2014). Management practices appear to be improving as well; the rate of problems has decreased since 2010 (Figure 1). Apparently, however, the public responds not only to the number of problems per gas well or per unit of gas produced but rather to the number of problems per unit time and per unit area. Thus, even though the r ate of problems with shale gas wells has remained small on a per well basis, pushback has grown in areas of increasing density of drilling and fracking. This may be especially true when consequences are fearsome such as flaming tapwater, toxic contamination, or earthquakes. It is natural that the social license for shale gas development is influenced by short-term, local thinking. But, such thinking may not be helpful given that Marcellus Shale gas wells generate one third the waste per unit volume of gas as compared to conventional shallow gas wells (Vidic et al. 2013). In addition, the release of pollutants such as carbon dioxide, particulates, mercury, nitrogen, and sulfur generated per unit of heat energy is lower f or unconventional shale gas than for fuels such as coal (Heath et al. 2014). Public pushback could nonetheless be a blessing. After all, pushback represents intensified interest in environmental issues. This interest may be seen in the PA DEP data for the rate of well integrity issues in conventional oil and gas wells—the increase in problem rate from 2008 to 2012 (Figure 1) is more likely due to heightened public attention and inspector scrutiny rather than a sudden deterioration in the management practices of the drilling companies (Brantley et al. 2014) During the next decades, the rate of hydraulic fracturing in PA will eventually slow. At some point, the use of produced brines to hydrofracture new wells will cease. Once recycling of brine to frack new wells stops, hundreds of gallons of brine will accumulate as waste at each well per day (Rahm et al. 2013). Disposal of this slightly radioactive brine will then become increasingly problematic. Interest on the part of the public for such issues is warranted. Public engagement today is needed to develop sustainable waste management and sustainable energy practices for the future.

Abstract:
The development and effective use of natural resources is essential for meeting crucial societal needs and for the economic development of a nation. Discussed here is the case of hydraulic fracturing which is used to fracture underground formations to recover natural gas and oil. Described in the article are economic benefits and environmental and human health implications of this technology; views on these aspects rapidly become controversial. Presented here is a consensus building paradigm to address and mitigate controversies related to the implementation of this technology.

Abstract:
The remarkable growth of shale gas production in the U.S. has given rise to increasing interest in the exploration of shale resources in other areas of the world, especially in China. This study focuses on analyzing the socioeconomic impacts of China's nearly six years' shale exploration and in the process of exploitation practices. Findings reveal that China's shale gas resource potential is unconfirmed and its contribution to improving the structure of energy consumption is limited. The plans for shale gas exploration and development reflect the desire to achieve quick success and instant benefits despite a lack of long-term strategy. The exploitation of shale gas remains a pollute first, pay later model, which brings many ecological and environmental risks. To accelerate the progress of shale gas exploration, China should formulate a long-term plan and strengthen basic technology research into shale gas exploitation. Moreover, the strength and breadth of government incentives must be expanded, and water resources should be reasonably allocated during shale gas exploitation.