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Title: Corrigendum to "Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems" [Geothermics 58 (2015) 22–31]

Abstract

Cost-effective creation of high-permeability reservoirs inside deep crystalline bedrock is the primary challenge for the feasibility of enhanced geothermal systems (EGS). Current reservoir stimulation entails adverse environmental impacts and substantial economic costs due to the utilization of large volumes of water “doped” with chemicals including rheology modifiers, scale and corrosion inhibitors, biocides, friction reducers among others where, typically, little or no information of composition and toxicity is disclosed. An environmentally benign, CO2-activated, rheoreversible fracturing fluid has recently been developed that significantly enhances rock permeability at effective stress significantly lower than current technology. We evaluate the potential of this novel fracturing fluid for application on geothermal sites under different chemical and geomechanical conditions, by performing laboratory-scale fracturing experiments with different rock sources under different confining pressures, temperatures, and pH environments. The results demonstrate that CO2-reactive aqueous solutions of environmentally amenable Polyallylamine (PAA) represent a highly versatile fracturing fluid technology. This fracturing fluid creates/propagates fracture networks through highly impermeable crystalline rock at significantly lower effective stress as compared to control experiments where no PAA was present, and permeability enhancement was significantly increased for PAA compared to conventional hydraulic fracturing controls. This was evident in all experiments, including variable rock source/type, operation pressuremore » and temperature (over the entire range for EGS applications), as well as over a wide range of formation-water pH values. This versatile novel fracturing fluid technology represents a great alternative to industrially available fracturing fluids for cost-effective and competitive geothermal energy production.« less

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1];  [3];  [4]; ORCiD logo [1]
  1. BATTELLE (PACIFIC NW LAB)
  2. MULTIPLE CONTRACTORS
  3. New Mexico State University
  4. Energy & Geoscience Institute
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1513248
Report Number(s):
PNNL-SA-134510
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Geothermics
Additional Journal Information:
Journal Volume: 72
Country of Publication:
United States
Language:
English

Citation Formats

Shao, Hongbo, Kabilan, Senthil, Childers, Matthew Ian., Stephens, Sean A., Suresh, Niraj, Beck, Anthon N., Varga, Tamas, Martin, Paul F., Kuprat, Andrew P., Jung, Hun Bok, Um, Wooyong, Bonneville, Alain H., Heldebrant, David J., Carroll, KC, Moore, Joseph, and Fernandez, Carlos A. Corrigendum to "Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems" [Geothermics 58 (2015) 22–31]. United States: N. p., 2018. Web. doi:10.1016/j.geothermics.2017.12.002.
Shao, Hongbo, Kabilan, Senthil, Childers, Matthew Ian., Stephens, Sean A., Suresh, Niraj, Beck, Anthon N., Varga, Tamas, Martin, Paul F., Kuprat, Andrew P., Jung, Hun Bok, Um, Wooyong, Bonneville, Alain H., Heldebrant, David J., Carroll, KC, Moore, Joseph, & Fernandez, Carlos A. Corrigendum to "Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems" [Geothermics 58 (2015) 22–31]. United States. doi:10.1016/j.geothermics.2017.12.002.
Shao, Hongbo, Kabilan, Senthil, Childers, Matthew Ian., Stephens, Sean A., Suresh, Niraj, Beck, Anthon N., Varga, Tamas, Martin, Paul F., Kuprat, Andrew P., Jung, Hun Bok, Um, Wooyong, Bonneville, Alain H., Heldebrant, David J., Carroll, KC, Moore, Joseph, and Fernandez, Carlos A. Thu . "Corrigendum to "Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems" [Geothermics 58 (2015) 22–31]". United States. doi:10.1016/j.geothermics.2017.12.002.
@article{osti_1513248,
title = {Corrigendum to "Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems" [Geothermics 58 (2015) 22–31]},
author = {Shao, Hongbo and Kabilan, Senthil and Childers, Matthew Ian. and Stephens, Sean A. and Suresh, Niraj and Beck, Anthon N. and Varga, Tamas and Martin, Paul F. and Kuprat, Andrew P. and Jung, Hun Bok and Um, Wooyong and Bonneville, Alain H. and Heldebrant, David J. and Carroll, KC and Moore, Joseph and Fernandez, Carlos A.},
abstractNote = {Cost-effective creation of high-permeability reservoirs inside deep crystalline bedrock is the primary challenge for the feasibility of enhanced geothermal systems (EGS). Current reservoir stimulation entails adverse environmental impacts and substantial economic costs due to the utilization of large volumes of water “doped” with chemicals including rheology modifiers, scale and corrosion inhibitors, biocides, friction reducers among others where, typically, little or no information of composition and toxicity is disclosed. An environmentally benign, CO2-activated, rheoreversible fracturing fluid has recently been developed that significantly enhances rock permeability at effective stress significantly lower than current technology. We evaluate the potential of this novel fracturing fluid for application on geothermal sites under different chemical and geomechanical conditions, by performing laboratory-scale fracturing experiments with different rock sources under different confining pressures, temperatures, and pH environments. The results demonstrate that CO2-reactive aqueous solutions of environmentally amenable Polyallylamine (PAA) represent a highly versatile fracturing fluid technology. This fracturing fluid creates/propagates fracture networks through highly impermeable crystalline rock at significantly lower effective stress as compared to control experiments where no PAA was present, and permeability enhancement was significantly increased for PAA compared to conventional hydraulic fracturing controls. This was evident in all experiments, including variable rock source/type, operation pressure and temperature (over the entire range for EGS applications), as well as over a wide range of formation-water pH values. This versatile novel fracturing fluid technology represents a great alternative to industrially available fracturing fluids for cost-effective and competitive geothermal energy production.},
doi = {10.1016/j.geothermics.2017.12.002},
journal = {Geothermics},
number = ,
volume = 72,
place = {United States},
year = {2018},
month = {3}
}