Article
Energy & Fuels
Li Huanran, Tang Xiaoming, Li Shengqing, Su Yuanda
Summary: This paper proposes a novel method for evaluating the fluid transport properties of hydraulic fractures by studying the dynamic fluid flow through fractures and its effect on borehole acoustic waves. The method takes into account the fractal characteristics of fractures observed in hydraulic fracturing experiments and combines them with the Biot-Rosenbaum theory to calculate and analyze the influence of hydraulic fractures on the velocity dispersion of borehole Stoneley-wave. The field application shows that this method is practical and effective in assessing the permeability and connectivity of hydraulic fractures.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Engineering, Geological
Huasheng Lin, Joung Oh, Ismet Canbulat, Bruce Hebblewhite, Hossein Masoumi, Stuart Walsh
Summary: Experimental results show that specimen size has little influence on breakout initiation stress, and data collected from previous studies can be used for future breakout analysis.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Construction & Building Technology
Kyung-Woo Park, Chae-Soon Choi, Byeong-Hak Park, Sung-Hoon Ji
Summary: The study investigates the influence of stress redistribution on the hydraulic properties of fractures around a borehole during the installation and expansion process. Numerical and experimental methods were used, and the results indicate that stress redistribution leads to an increase in fracture apertures and transmissivity, suggesting the potential for a deposition hole to become a conduit for nuclides.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2022)
Article
Mathematics
Vladislav Sh. Shagapov, Emiliya Galiakbarova, Zulfiya Khakimova
Summary: The possibility of diagnosing the presence and conductivity of hydraulic fractures in low-permeability reservoirs using an acoustic TV set is explored. By generating an impulse signal in the fluid between the probe body and the borehole wall, the presence and conductivity of fractures can be estimated through damping of the signal and the appearance of reflected pressure bursts.
Article
Geochemistry & Geophysics
Ying Zhai, Dejun Liu, David K. Potter, Yang Li
Summary: A novel method TIM-SCARM is proposed to characterize hydraulic fractures, which evaluates fracture characteristics by measuring conductivity, cross-sectional shape, half-length, and orientation. The study shows that integrating multicomponent signals and axial information in measurements improves the evaluation of fracture geometry.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geochemistry & Geophysics
Zhenya Zhou, Eva Caspari, Nicolas D. Barbosa, Andrew Greenwood, Klaus Holliger
Summary: The compliance of mechanical fractures is important in various geoscientific applications. This study evaluates the potential of inferring the compliance of individual fractures from standard FWS data in the presence of background heterogeneity. The results show promising estimates using phase time delay method.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Keita Yoshioka, Masafumi Katou, Kohei Tamura, Yutaro Arima, Yoshiharu Ito, Youqing Chen, Tsuyoshi Ishida
Summary: Hydraulic fractures often interact with preexisting discontinuities in the rock mass, and the criteria for fracture penetration or deflection are typically based on the in situ stress and the characteristics of the discontinuities. However, experiments on carbonate rocks show that fractures more frequently deflect at grain boundaries as they propagate farther from the wellbore, which is not explained by the conventional criteria. Our study demonstrates that the energy dissipation of a deflecting fracture increases with the distance from the wellbore, making it energetically more favorable for a fracture to deflect at a discontinuity. This highlights the importance of energetic stability analysis for determining fracture paths.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Engineering, Chemical
Xinglong Zhao, Bingxiang Huang, Zhanwei Wu, Yang Han, Xiaoke Han
Summary: The initial pore pressure gradient along the borehole radial direction has a significant impact on the initiation and instability of a hydraulic crack tip and its propagation. Experimental results reveal that considering the borehole radial pore pressure gradient leads to a higher crack propagation pressure compared to the initiation pressure. The pore pressure gradient increases the resistance to hydraulic fracture propagation.
TRANSPORT IN POROUS MEDIA
(2023)
Article
Engineering, Geological
Xiaoxuan Li, Hannes Hofmann, Keita Yoshioka, Yongjiang Luo, Yunpei Liang
Summary: Hydraulic fracturing is a widely used technique in unconventional reservoirs. The interactions between hydraulic fracture and natural fracture can have a significant impact on the fracture patterns and subsequent productivity. In this study, a phase-field model is used to investigate the influence of in-situ stress, fracturing operational parameters, and natural fracture orientation and strength on the fracture propagation path. The results provide insights into the mechanism behind different propagation patterns and factors affecting fracture complexity.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Geological
Xibing Li, Jiangzhan Chen, Chunde Ma, Linqi Huang, Chongjin Li, Jun Zhang, Yuzhe Zhao
Summary: The study proposed a novel in-situ stress measurement method, the RCAE method, which can effectively measure the stress in deep mining engineering, with high accuracy and simple operation. The practical case study conducted in a gold mine borehole validated the effectiveness of the method.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Geochemistry & Geophysics
Da Chen, Chao Zhang, Wei Guan, Jun Wang
Summary: This study proposed a novel borehole imaging algorithm called borehole full-waveform inversion (BFWI) for probing near-formation properties surrounding boreholes. BFWI is not constrained by the formation structure and has wider applicability than traditional methods, showing considerable potential for near-borehole formation imaging.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Mining & Mineral Processing
Huasheng Lin, Sarvesh Kumar Singh, Zizhuo Xiang, Won Hee Kang, Simit Raval, Joung Oh, Ismet Canbulat
Summary: This paper compares and improves the estimation of minimum horizontal stress in borehole breakout using machine learning regression techniques. The results show that artificial neural network can accurately predict the minimum horizontal stress, which is of great significance for underground operations.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Article
Geochemistry & Geophysics
I Markova, M. Markov, J. Ramirez Sabag, G. Ronquillo Jarillo
Summary: This paper discusses a sonic logging tool designed for registering parameters of reflected waves in a borehole, calculating the mechanical impedance loading and frequency dependences in poroelastic formations. Results show that impedance measurements near resonance frequencies can determine the filtration properties of highly permeable rocks, while low-frequency impedance measurements offer a good way to evaluate the permeability of porous media.
GEOPHYSICAL PROSPECTING
(2021)
Article
Engineering, Chemical
Heng Fan, Shengyue Zhang, Shuai Fan, Dongfeng Li, Zhifeng Zhao
Summary: Based on the AWFE method, this study investigates the influence of mechanical parameters on the acoustic wave propagation characteristics of shale reservoirs and studies the different crack characteristics and multi-physical coupling phenomena in shale gas reservoir cracks. By using the AWFE method, the shape, position, and reflection waveform characteristics of cracks can be calculated, and the validity of the research method can be verified.
Article
Engineering, Geological
Hamid Roshan, Danqi Li, Ismet Canbulat, Klaus Regenauer-Lieb
Summary: The knowledge of in situ stress is crucial for the safe and optimized extraction of minerals and energy resources. This study presents a new methodology that utilizes borehole televiewer data and borehole deformation analysis to estimate in situ stresses. The advantages, challenges, and reliability of this method are discussed through a field case study. The proposed methodology is compared with independent in situ stress measurements to demonstrate its robustness.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Geosciences, Multidisciplinary
Pascal Audet, Claire A. Currie, Andrew J. Schaeffer, Alexander M. Hill
GEOPHYSICAL RESEARCH LETTERS
(2019)
Article
Multidisciplinary Sciences
Yunfeng Chen, Yu Jeffrey Gu, Claire A. Currie, Stephen T. Johnston, Shu-Huei Hung, Andrew J. Schaeffer, Pascal Audet
NATURE COMMUNICATIONS
(2019)
Article
Geochemistry & Geophysics
Xiaowen Liu, Claire A. Currie
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Multidisciplinary Sciences
James D. Muirhead, Tobias P. Fischer, Sarah J. Oliva, Amani Laizer, Jolante van Wijk, Claire A. Currie, Hyunwoo Lee, Emily J. Judd, Emmanuel Kazimoto, Yuji Sano, Naoto Takahata, Christel Tiberi, Stephen F. Foley, Josef Dufek, Miriam C. Reiss, Cynthia J. Ebinger
Article
Geochemistry & Geophysics
T. McIntyre, K. Kublik, C. Currie, D. G. Pearson
Summary: This study utilized in situ methods to determine heat generation within cratonic lithospheric mantle peridotites. Results showed that unmetasomatized mantle has negligible heat production, while refertilized peridotites have slightly elevated heat generation. Typical cratonic mantle peridotites fall between these two bounds, ranging from 0.00004 to 0.006 mu W/m(3), producing lower estimates of lithospheric thickness compared to previous studies.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Huilin Wang, Claire A. Currie, Peter G. DeCelles
Summary: The central Andes is part of a Cordilleran orogen formed through continent-ocean convergence. In contrast to the thickened crust, the mantle lithosphere below much of the orogen is anomalously thin. Numerical models suggest that mantle flow can amplify a local lithosphere instability to orogen-wide lithosphere removal, rapidly eliminating accumulated mass in the orogen.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
C. G. Nixon, D. R. Schmitt, R. Kofman, J. Lofi, S. P. S. Gulick, S. Saustrup, G. L. Christeson, D. A. Kring
Summary: This study conducted a vertical seismic profile in a borehole to better understand the seismic reflectivity and in situ seismic properties of the Chicxulub impact structure peak ring. The results showed that the strong seismic reflection event observed in the seismic reflection data was caused by discontinuities in the elastic impedance. The seismic wavefield below the reflection event was chaotic, indicating high levels of scattering. Shear wave speeds and damage parameters were also determined, which can aid in calibrating impact models and assessing levels of fracturing.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geochemistry & Geophysics
Sarah Jaye Oliva, Cynthia J. Ebinger, Eleonora Rivalta, Charles A. Williams, Christelle Wauthier, Claire A. Currie
Summary: In continental rift systems, the role of rift magmatism in topography formation, plate state-of-stress, and volcanic and tectonic processes is crucial. However, the influence of magma intrusions, crustal thinning, and rift basin and flank topography on stress field rotations in rift zones is poorly understood.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Engineering, Geological
Wenjing Wang, Douglas R. Schmitt, Wei Li
Summary: Drilling in pre-stressed formations can lead to borehole instability and failure. While previous studies focused on isotropic rock masses, this research examines borehole failure in rocks with both elastic and strength anisotropy. The study develops a program that combines an algorithm for calculating stress concentrations and anisotropic rock strength criteria. The results show that failure in the weak plane complicates the failure pattern around the wellbore.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Editorial Material
Geochemistry & Geophysics
Isabelle Manighetti, Rachel Abercrombie, Yehuda Ben-Zion, Yves Bernabe, Michael Bostock, Mark J. Dekkers, Satoshi Ide, Stephen W. Parman, Douglas R. Schmitt, Paul Tregoning
Summary: The editors of JGR-Solid Earth express their appreciation to those who served as peer reviewers for the journal in 2021.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Tai-Chieh Yu, Claire A. Currie, Martyn J. Unsworth, Brandon F. W. Chase
Summary: Geophysical imaging reveals significant changes in mantle properties from the Southern Canadian Cordillera to the Laurentian Craton in southwestern Canada. A joint analysis of shear wave velocity and resistivity helps to quantify temperature and olivine water content at different depths, indicating a trade-off between temperature and water content in the cordillera region and cooler, drier conditions in the craton mantle lithosphere. The viscosity of the cordillera asthenosphere is lower, making it susceptible to small-scale convection, while the craton mantle lithosphere shows increased thickness towards the east.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Huilin Wang, Claire A. Currie
Summary: The outward growth of many mountain ranges is driven by the pulsed migration of the strain front. In the Central Andes, during the Cenozoic shortening, the strain front migrated abruptly eastward, isolating the plateau interior from deformation. Contrary to the traditional model, our numerical models show that the ductile lower crust plays a key role in orogen dynamics. As the orogen grows upward, the lower crust flows outward, causing stepwise expansion through landward-migrating deformation.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Review
Geosciences, Multidisciplinary
Claire A. Currie, Tai-Chieh Yu
Summary: Geodynamic models provide insights into lithosphere structure and evolution. This review focuses on geodynamic studies along a profile in southwestern Canada. Observations show changes in thermal structure along the profile, particularly in the transition from the cool forearc to the hot volcanic arc. The timing and mechanisms of lithosphere thinning in the Cordillera region are debated, and the presence of the enigmatic Cordillera-craton lithosphere step suggests long-term preservation of a strong and chemically depleted craton mantle lithosphere.
CANADIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Tariq E. Mohammed, Douglas R. Schmitt
JOURNAL OF APPLIED GEOPHYSICS
(2020)
Correction
Geochemistry & Geophysics
Gautier Njiekak, Douglas R. Schmitt
PURE AND APPLIED GEOPHYSICS
(2019)