The Experts below are selected from a list of 7971 Experts worldwide ranked by ideXlab platform
Qiang Wang - One of the best experts on this subject based on the ideXlab platform.
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natural gas from Shale Formation a research profile
Renewable & Sustainable Energy Reviews, 2016Co-Authors: Qiang Wang, Rongrong LiAbstract:With the unfolding Shale gas revolution, the literature related to Shale gas has grown dramatically, particularly in the past decades. This study aims at providing updated and systemic research inFormation for scientists, researchers, engineers, policymakers, and other stakeholders of Shale gas to stimulate wide discussion about the future studies of Shale gas through the investigation of Shale gas literature cited on the Science Citation Index Expanded Web of Science database between 1990 and 2014. Using bibliometric techniques and the social network method, we attempt to explore three areas of the research profile: (1) country productivity distribution, (2) country collaboration patterns, and (3) research topics analysis. First, the results show that the USA was the largest contributor of the literature on the subject, followed by China and Canada. Moreover, examining overall trends show that the research on Shale gas saw a significant growth along with greater participation in the number of countries. Second, the USA was the most frequent partner among all the international collaborative studies. The number of studies in most European countries was not as high as that in Asian countries. However, their collaboration was considerably active in country-to-country collaboration of Shale gas. Third, the trend for all research topics is an increasing one, with the exception of Geochemistry Geophysics. Particularly, the areas of engineering, energy fuels, and geology have grown sharply over the past two decades. However, water resources have become an extremely hot topic since 2012. The research topic analysis results indicate that the current Shale gas development is closely related to the three hot topics (engineering, energy fuels, and geology), whereas its future hinges on water resources. In conclusion, future studies of Shale gas are suggested to stimulate more discussion for the wide community of those interested in Shale gas.
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natural gas from Shale Formation the evolution evidences and challenges of Shale gas revolution in united states
Renewable & Sustainable Energy Reviews, 2014Co-Authors: Qiang Wang, Xi Chen, Howard RogersAbstract:Extraction of natural gas from Shale rock in the United States (US) is one of the landmark events in the 21st century. The combination of horizontal drilling and hydraulic fracturing can extract huge quantities of natural gas from impermeable Shale Formations, which were previously thought to be either impossible or uneconomic to produce. This review offers a comprehensive insight into US Shale gas opportunities, appraising the evolution, evidence and the challenges of Shale gas production in the US. The history of US Shale gas in this article is divided into three periods and based on the change of oil price (i.e., the period before the 1970s oil crisis, the period from 1970s to 2000, and the period since 2000), the US has moved from being one of the world's biggest importers of gas to being self-sufficient in less than a decade, with the Shale gas production increasing 12-fold (from 2000 to 2010). The US domestic natural gas price hit a 10-year low in 2012. The US domestic natural gas price in the first half of 2012 was about $2 per million British Thermal Unit (BTU), compared with Brent crude, the world benchmark price for oil, now about $ 80–100/barrel, or $14–17 per million BTU. Partly due to an increase in gas-fired power generation in response to low gas prices, US carbon emissions from fossil-fuel combustion fell by 430millionton CO2 – more than any other country – between 2006 and 2011. Shale gas also stimulated economic growth, creating 600,000 new jobs in the US by 2010. However, the US Shale gas revolution would be curbed, if the environmental risks posed by hydraulic fracturing are not managed effectively. The hydraulic fracturing is water intensive, and can cause pollution in the marine environment, with implications for long-term environmental sustainability in several ways. Also, large amounts of methane, a powerful greenhouse gas, can be emitted during the Shale gas exploration and production. Hydraulic fracturing also may induce earthquakes. These environmental risks need to be managed by good practices which is not being applied by all the producers in all the locations. Enforcing stronger regulations are necessary to minimize risk to the environment and on human health. Robust regulatory oversight can however increase the cost of extraction, but stringent regulations can foster an historic opportunity to provide cheaper and cleaner gas to meet the consumer demand, as well as to usher in the future growth of the industry.
Rongrong Li - One of the best experts on this subject based on the ideXlab platform.
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natural gas from Shale Formation a research profile
Renewable & Sustainable Energy Reviews, 2016Co-Authors: Qiang Wang, Rongrong LiAbstract:With the unfolding Shale gas revolution, the literature related to Shale gas has grown dramatically, particularly in the past decades. This study aims at providing updated and systemic research inFormation for scientists, researchers, engineers, policymakers, and other stakeholders of Shale gas to stimulate wide discussion about the future studies of Shale gas through the investigation of Shale gas literature cited on the Science Citation Index Expanded Web of Science database between 1990 and 2014. Using bibliometric techniques and the social network method, we attempt to explore three areas of the research profile: (1) country productivity distribution, (2) country collaboration patterns, and (3) research topics analysis. First, the results show that the USA was the largest contributor of the literature on the subject, followed by China and Canada. Moreover, examining overall trends show that the research on Shale gas saw a significant growth along with greater participation in the number of countries. Second, the USA was the most frequent partner among all the international collaborative studies. The number of studies in most European countries was not as high as that in Asian countries. However, their collaboration was considerably active in country-to-country collaboration of Shale gas. Third, the trend for all research topics is an increasing one, with the exception of Geochemistry Geophysics. Particularly, the areas of engineering, energy fuels, and geology have grown sharply over the past two decades. However, water resources have become an extremely hot topic since 2012. The research topic analysis results indicate that the current Shale gas development is closely related to the three hot topics (engineering, energy fuels, and geology), whereas its future hinges on water resources. In conclusion, future studies of Shale gas are suggested to stimulate more discussion for the wide community of those interested in Shale gas.
V P Sharma - One of the best experts on this subject based on the ideXlab platform.
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evaluation of polyacrylamide grafted polyethylene glycol silica nanocomposite as potential additive in water based drilling mud for reactive Shale Formation
Journal of Natural Gas Science and Engineering, 2015Co-Authors: Rajat Jain, Vikas Mahto, V P SharmaAbstract:Abstract This research work discusses the feasibility of polyacrylamide-grafted-polyethylene glycol/SiO 2 nanocomposite as a potential additive for the drilling of troublesome Shale Formations which may lead to severe wellbore instability problems. The free radical polymerization technique was adopted for the synthesis of the nanocomposite and it was characterized by Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), Energy dispersive spectroscopy (EDX), Atomic force microscopy (AFM), and thermogravimetric analysis (TGA). Then, it was utilized in the formulation of the water based drilling mud system. Its effect on the rheological parameters and filtration control characteristics of the developed mud system was analyzed thoroughly as per API standard procedures. In addition, its Shale inhibition characteristic was investigated with hot rolling Shale dispersion tests, and immersion test. Further, Core flooding tests were carried out to study the Formation damage caused by developed drilling fluid system. The experimental investigations revealed that synthesized nanocomposite exhibited superior Shale inhibition property. The nanocomposite acted synergistically with other additives in the developed system and furnished good rheological properties & filtration characteristics. It also exhibited low Formation damage, high Shale recovery, and high thermal stability than the partially hydrolyzed polyacrylamide (PHPA) polymer in the developed drilling mud system. Hence, this nanocomposite may be used as a potential drilling fluid additive in the water based drilling fluid system for Shale Formations.
Rajat Jain - One of the best experts on this subject based on the ideXlab platform.
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Development of Inhibitive Water-based Drilling Fluid System for Shale Formation
2015Co-Authors: Rajat Jain, Tinku Saikia, Vikas MahtoAbstract:The drilling of troublesome Shale Formations leads to severe wellbore instability problems due to swelling and dispersion of the Shale cuttings in the welllbore. Hence, the formulation of inhibitive water-based drilling fluid system with enhanced rheological properties and filtration characteristics is a critical issue for these complex Shale Formations. This research article consists of a favourable drilling fluid system developed using potassium chloride (KCL), partially hydrolyzed polyacrylamide (PHPA), ethylene glycol and xanthan gum polymer. The rheological properties and filtration characteristics were measured as per API recommended standard procedures for field testing of drilling fluids. The developed system has low plastic viscosity, good gel strength, high consistency index, and moderate apparent viscosity for the optimum performance of the drilling fluid system while dealing with Shale Formations. The developed drilling fluid formulations exhibited low fluid loss volume during the filtration studies. This system has high inhibition property which controls the hydration and dispersion of the Shale cuttings inside the wellbore. Hence, developed inhibitive water-based drilling fluid system may be suitable for the drilling of sensitive Shale Formations. Keywords: drilling fluid, rheological properties, filtration characteristics, inhibition
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evaluation of polyacrylamide grafted polyethylene glycol silica nanocomposite as potential additive in water based drilling mud for reactive Shale Formation
Journal of Natural Gas Science and Engineering, 2015Co-Authors: Rajat Jain, Vikas Mahto, V P SharmaAbstract:Abstract This research work discusses the feasibility of polyacrylamide-grafted-polyethylene glycol/SiO 2 nanocomposite as a potential additive for the drilling of troublesome Shale Formations which may lead to severe wellbore instability problems. The free radical polymerization technique was adopted for the synthesis of the nanocomposite and it was characterized by Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), Energy dispersive spectroscopy (EDX), Atomic force microscopy (AFM), and thermogravimetric analysis (TGA). Then, it was utilized in the formulation of the water based drilling mud system. Its effect on the rheological parameters and filtration control characteristics of the developed mud system was analyzed thoroughly as per API standard procedures. In addition, its Shale inhibition characteristic was investigated with hot rolling Shale dispersion tests, and immersion test. Further, Core flooding tests were carried out to study the Formation damage caused by developed drilling fluid system. The experimental investigations revealed that synthesized nanocomposite exhibited superior Shale inhibition property. The nanocomposite acted synergistically with other additives in the developed system and furnished good rheological properties & filtration characteristics. It also exhibited low Formation damage, high Shale recovery, and high thermal stability than the partially hydrolyzed polyacrylamide (PHPA) polymer in the developed drilling mud system. Hence, this nanocomposite may be used as a potential drilling fluid additive in the water based drilling fluid system for Shale Formations.
Zhanqing Qu - One of the best experts on this subject based on the ideXlab platform.
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evaluation of acid fracturing treatments in Shale Formation
Energy & Fuels, 2017Co-Authors: Yanchao Li, Yong Ding, Zhanqing QuAbstract:Hydraulic fracturing by stimulated reservoir volume (SRV) is a necessity to realize commercial development of Shale gas, and its stimulation mechanism still needs further study, and the effectiveness of supplementary stimulation measures needs further exploration. The Shale always contains some carbonate minerals. This paper tests the permeability of acid-etched fracture in Shale to explore the influence of carbonate mineral content, acid fluid types and concentration, fracture plane roughness, proppant, and confining pressure on the acid-etched effects in Shale, and uses CT scanning to conduct research on variation of microscopic pore-throat texture in Shale before and after acid-etching. The test shows that the roughness of the fracture plane perpendicular to the bedding plane is higher than the roughness of that paralleled to the bedding plane, and the roughness in both fracture planes perpendicular to and paralleled to the bedding plane increases as the carbonate minerals content increases. In same gr...