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D. Roddy, P. Younger (2010)
Underground coal gasification with CCS: a pathway to decarbonising industryEnergy and Environmental Science, 3
K. Brown (2012)
IN SITU COAL GASIFICATION: AN EMERGING TECHNOLOGY 1Journal of the American Society of Mining and Reclamation, 2012
M. Zoback (2007)
Reservoir Geomechanics: Index
A. Sarraf, J. Mmbaga, Gupta, R. Hayes (2010)
Modeling Cavity Growth during Underground Coal Gasification
(2001)
Borehole stability, sand production and microseismic monitoring. Innovations for Horizontal Wells, SPE/CIM
F. Laouafa, R. Farret, S. Vidal-Gilbert, J. Kaźmierczak (2016)
Overview and modeling of mechanical and thermomechanical impact of underground coal gasification exploitationMitigation and Adaptation Strategies for Global Change, 21
K. Stańczyk, K. Kapusta, M. Wiatowski, J. Swiadrowski, A. Smoliński, J. Rogut, A. Kotyrba (2012)
Experimental simulation of hard coal underground gasification for hydrogen productionFuel, 91
Dongmin Yang, V. Sarhosis, Y. Sheng (2014)
Thermal–mechanical modelling around the cavities of underground coal gasificationJournal of The Energy Institute, 87
A. Shirazi (2012)
CFD Simulation of Underground Coal Gasification
H. Akbarzadeh, R. Chalaturnyk (2016)
Sequentially coupled flow-geomechanical modeling of underground coal gasification for a three-dimensional problemMitigation and Adaptation Strategies for Global Change, 21
M. Najafi, S. Jalali, R. KhaloKakaie (2014)
Thermal–mechanical–numerical analysis of stress distribution in the vicinity of underground coal gasification (UCG) panelsInternational Journal of Coal Geology, 134
R. Mellors, Xianjin Yang, Joshua White, Abelardo Ramirez, J. Wagoner, David Camp (2016)
Advanced geophysical underground coal gasification monitoringMitigation and Adaptation Strategies for Global Change, 21
D. Gregg, T. Edgar (1978)
Underground coal gasificationAiche Journal, 24
X. Luo, Q. Tan, C. Luo, Z. Wang (2008)
Microseismic monitoring of burn front in an underground coal gasification experiment
S. Al-Kaabi (1997)
[5]1 Petroleum Related Rock MechanicseImpact on the Recovery of Conventional Oil from Sandstone Reservoirs
(2009)
Comparison of UCG cavity growth with CFD model predictions
G. Perkins, V. Sahajwalla (2006)
A numerical study of the effects of operating conditions and coal properties on cavity growth in underground coal gasificationEnergy & Fuels, 20
B. Das, R. Chatterjee (2017)
Wellbore stability analysis and prediction of minimum mud weight for few wells in Krishna-Godavari Basin, IndiaInternational Journal of Rock Mechanics and Mining Sciences, 93
(2014)
Thermo-mechanical modeling of panels dimensions in underground coal gasification method PhD Thesis, Shahrood University of Technology, Iran
Hong Tian, M. Ziegler (2013)
Development of a thermo-mechanical model for rocks exposed to high temperatures during underground coal gasification
M. Wiatowski, K. Kapusta, Magdalena Ludwik-Pardała, K. Stańczyk (2016)
Ex-situ experimental simulation of hard coal underground gasification at elevated pressureFuel, 184
M. Imran, Dileep Kumar, Naresh Kumar, A. Qayyum, Ahmad Saeed, Muhammad Bhatti (2014)
Environmental concerns of underground coal gasificationRenewable & Sustainable Energy Reviews, 31
MD Zoback (2007)
Reservoir geomechanics, First published
D. Gregg (1977)
Ground subsidence resulting from underground gasification of coal. [36 refs]
R. Goodman (1980)
Introduction to Rock Mechanics
(2009)
Environmental impact assessment for proposed underground coal gasification (UCG) pilot project at Vastan mine block, Surat in Gujarat
C. Otto, T. Kempka, K. Kapusta, K. Stańczyk (2016)
Fault Reactivation Can Generate Hydraulic Short Circuits in Underground Coal Gasification—New Insights from Regional-Scale Thermo-Mechanical 3D ModelingMinerals, 6
J. McInnis, S. Singh, I. Huq (2016)
Mitigation and adaptation strategies for global change via the implementation of underground coal gasificationMitigation and Adaptation Strategies for Global Change, 21
J. Nitao, D. Camp, T. Buscheck, Joshua White, G. Burton, J. Wagoner, Mingjie Chen (2011)
Progress on a New Integrated 3-D UCG Simulator and its Initial Application
M. Khan, J. Mmbaga, A. Shirazi, Qin Liu, RajenderKumar Gupta (2015)
Modelling Underground Coal Gasification—A ReviewEnergies, 8
E. Jamshidi, M. Amani (2014)
Numerical Wellbore Stability Analysis Using Discrete Element ModelsPetroleum Science and Technology, 32
M. Laciak, K. Kostúr, M. Durdán, J. Kačur, P. Flegner (2016)
The analysis of the underground coal gasification in experimental equipmentEnergy, 114
(2012)
User manual for FLAC3D, version.5.0
O. Vorobiev, J. Morris, T. Antoun, S. Friedmann (2008)
Geomechanical Simulations Related to UCG Activities
E. Fjaer (1992)
Petroleum Related Rock Mechanics
KM Brown (2012)
In situ coal gasification: an emerging technologyProc Am Soc Min Reclamat, 2012
Q. Tan, X. Luo, S. Li (2008)
Numerical modeling of thermal stress in a layered rock mass
E Burton, J Friedmann, R Upadhye (2006)
Best practices in underground coal gasification, Draft. US DOE contract no W-7405-Eng-48
H. Akbarzadeh, R. Chalaturnyk (2013)
Coupled Fluid-Thermal-Mechanical Analyses of a Deep Underground Coal Gasification Cavity
S. Mohanto, K. Singh, T. Chakraborty, D. Basu (2014)
Cyclic Thermo-Mechanical Analysis of Wellbore in Underground Compressed Air Energy Storage CavernGeotechnical and Geological Engineering, 32
Md. Alam, M. Rahman, Md. Firoz (2013)
Water Supply and Sanitation Facilities in Urban Slums: A Case Study of Rajshahi City Corporation SlumsAmerican Journal of Civil Engineering and Architecture, 1
Sateesh Daggupati, R. Mandapati, S. Mahajani, A. Ganesh, D. Mathur, Rakesh Sharma, P. Aghalayam (2010)
Laboratory studies on combustion cavity growth in lignite coal blocks in the context of underground coal gasificationEnergy, 35
(2010)
An integrated 3-D UCG model for prediction cavity growth, production gas, and interaction with the host environment
A. Elyasi, K. Goshtasbi (2015)
Numerical modeling of the stability of horizontal multidrain oil wellsChina Ocean Engineering, 29
Underground coal gasification (UCG) is an energy production pathway in underground coal deposits with the potential advantage of decreasing the greenhouse gas emissions during the energy extraction process. The environmental benefits of UCG are mainly due to eliminating (i) conventional mining operations, (ii) the presence of coal miners in the underground, (iii) coal washing and fines disposal, and (iv) coal stockpiling and coal transportation activities. Furthermore, UCG has a capacity of great potential to provide a clean coal energy source by the implementing carbon capture and storage techniques as part of the energy extraction process. In this method, coal seams in the underground were converted into syngas including hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), and methane (CH4) gasses with an advanced thermochemical process. UCG operation effected significant geomechanical changes to the overburden strata. In this process, the vertical well (especially the production well) was mainly affected by the mechanical stresses and the thermal stress, induced by the high syngas temperature. This high temperature changed the mechanical, thermal, and physical properties of the coal seam and its surrounding rocks (the host rocks), finally causing instability of the vertical well, while leading to serious production and environmental problems. One of these environmental issues is the possibility of syngas leakage in to the environment, resulting in water pollution and acidification. In addition, the released syngas could trigger global warming and air pollution. This research evaluated environmental aspects of UCG vertical well (production well) based on the stability analysis. Therefore, a flow sheet form was developed for three-dimensional thermomechanical numerical modeling of an UCG vertical well by explicit Lagrangian finite difference method. In this model, a criterion was established based on normalized yielded zone area to assess the stability conditions. The methodology was able to capture all factors that influence the instability of UCG well while selecting suitable mud pressure and lining system during the well drilling process. Hence, when wellbore integrity issues arose during drilling, the mitigation strategies were applied to rectify these problems. The results demonstrated that the vertical well should be drilled at a constant mud pressure of 9 MPa (megapascal), thus causing minimum environmental problems. The thermomechanical modeling provided an opportunity to assess the potential environmental impacts and identify reliable global climate change mitigation strategies.
Mitigation and Adaptation Strategies for Global Change – Springer Journals
Published: May 27, 2018
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