Hydraulic Fracking of Coal

Author(s):  
Pramod Thakur
Keyword(s):  
Author(s):  
David A. Hullender ◽  
Natalie N. Snyder ◽  
Jan C. Gans

It is not uncommon for simulation models for the dynamics of hydraulic systems to contain fluid lines with turbulent flow. This paper demonstrates applications of an analytical model for pressure transients in lines with turbulent flow for lines with boundary conditions defined by hydraulic components such as pumps, valves, actuators, and restrictions; the model can be simplified for cases of laminar flow. The equations for conducting simulations with time varying inputs and for calculating eigenvalues of systems in which fluid lines are internal components are formulated. For an example demonstrating application of the equations, the model is used to simulate and optimize the performance of a hydraulic fracking system which involves the pumping of large volumes of water with additives through pipes under turbulent flow conditions into rock fissures. Specifically, the model is used to generate the frequency response of the flow transients in the pipe resulting from pump flow pulsations. This frequency response is then used to compute the eigenvalues of the system. The model is then used to conduct time domain simulations to determine the potential flow amplifications into rock fissures associated with pulsing the flow from the pump at the resonant frequency of the pressure transients in the pipe. The results reveal flow amplifications into the fissures of up to 22 times depending on the pulse shape of the input flow, the Reynolds number of the mean flow, the fluid properties of the slurry, and the length and diameter of the pipe.


2021 ◽  
Author(s):  
Paul McKinley

As of 2015 hydraulic fracking for unconventional shale gas in Ontario is not currently being used. In this paper, qualitative in person interviews of government officials and a province wide survey of municipal leaders were conducted to determine the level of support for the potential use of unconventional fracking in Ontario. Potential reasons for the current absence of unconventional fracking in Ontario are geology and lack of investment. Although fracking is a topic of discussion in most municipal governments, support is low. The likely future of unconventional fracking in Ontario is slim, but it cannot be completely ruled out. There is a general consensus that municipal support is important if horizontal fracking was to be used in Ontario.


2021 ◽  
Author(s):  
Paul McKinley

As of 2015 hydraulic fracking for unconventional shale gas in Ontario is not currently being used. In this paper, qualitative in person interviews of government officials and a province wide survey of municipal leaders were conducted to determine the level of support for the potential use of unconventional fracking in Ontario. Potential reasons for the current absence of unconventional fracking in Ontario are geology and lack of investment. Although fracking is a topic of discussion in most municipal governments, support is low. The likely future of unconventional fracking in Ontario is slim, but it cannot be completely ruled out. There is a general consensus that municipal support is important if horizontal fracking was to be used in Ontario.


2014 ◽  
Vol 21 (1) ◽  
pp. 222 ◽  
Author(s):  
Anna J. Willow ◽  
Sara Wylie

This article reviews recent literature relevant to the ongoing shale gas boom and introduces the Journal of Political Ecology's Special Section on hydraulic fracking. We highlight the need for ethnographic studies of the tumultuous social and physical transformations resulting from, and produced by, an unfolding frontier of energy production that unsettles social, economic, and ecological landscapes. We examine how intercommunity connections are vital to recognizing the shared structural conditions produced by the oil and gas industry's expansion, through examining the roles played by the oil field services industry, the sequestration of information and agnotology (the deliberate production of ignorance), divide and conquer tactics, and shared experiences of risk and embodied effects. Summarizing the contributions of the five articles included in the Special Section, we offer recommendations for further inquiry. We examine how social science studies of hydraulic fracking are producing new and innovative methodologies for developing participatory academic and community research projects.Key words: digital media, embodiment, energy, hydraulic fracturing, oil field services industry, shale gas


2014 ◽  
Vol 33 (8) ◽  
pp. 1679-1689 ◽  
Author(s):  
G. Allen Burton ◽  
Niladri Basu ◽  
Brian R. Ellis ◽  
Katherine E. Kapo ◽  
Sally Entrekin ◽  
...  

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