Using a deep neural network and transfer learning to bridge scales for seismic phase picking

C Chai, M Maceira… - Geophysical …, 2020 - Wiley Online Library
The important task of tracking seismic activity requires both sensitive detection and accurate
earthquake location. Approximate earthquake locations can be estimated promptly and …

Laboratory hydraulic stimulation experiments to investigate the interaction between newly formed and preexisting fractures

A Abe, TW Kim, RN Horne - International Journal of Rock Mechanics and …, 2021 - Elsevier
Hydraulic stimulation in an enhanced geothermal reservoir (EGS) often creates a complex
fracture network. It is understood that a fracture network includes both preexisting natural …

Creation of a mixed‐mode fracture network at mesoscale through hydraulic fracturing and shear stimulation

M Schoenball, JB Ajo‐Franklin… - Journal of …, 2020 - Wiley Online Library
Abstract Enhanced Geothermal Systems could provide a substantial contribution to the
global energy demand if their implementation could overcome inherent challenges …

Crustal permeability generated through microearthquakes is constrained by seismic moment

P Yu, A Mali, T Velaga, A Bi, J Yu, C Marone… - Nature …, 2024 - nature.com
We link changes in crustal permeability to informative features of microearthquakes (MEQs)
using two field hydraulic stimulation experiments where both MEQs and permeability …

Characterization of flow and transport in a fracture network at the EGS Collab field experiment through stochastic modeling of tracer recovery

H Wu, P Fu, JP Morris, ED Mattson, G Neupane… - Journal of …, 2021 - Elsevier
Energy extraction from subsurface reservoirs is important for addressing the increasing
energy demand and environmental concerns such as global warming. However, the …

Investigating fracture network creation and stimulation mechanism of EGS reservoirs

A Abe, RN Horne - Geothermics, 2023 - Elsevier
Based on the observation of past EGS projects, it is suggested that hydraulic stimulation
created a complex fracture network including both preexisting fractures and newly formed …

Fracture conductivity management to improve heat extraction in enhanced geothermal systems

Q Zhang, AD Taleghani, G Li - International Journal of Heat and Mass …, 2024 - Elsevier
The efficiency of an enhanced geothermal reservoir (EGS) depends on the effective
circulation of the working fluid through the geothermal formation. To remove the thermal …

[HTML][HTML] Using in-situ strain measurements to evaluate the accuracy of stress estimation procedures from fracture injection/shut-in tests

Y Guglielmi, M McClure, J Burghardt, JP Morris… - International Journal of …, 2023 - Elsevier
Fracture injection/shut-in tests are commonly used to measure the state of stress in the
subsurface. Injection creates a hydraulic fracture (or in some cases, opens a preexisting …

In situ continuous monitoring of borehole displacements induced by stimulated hydrofracture growth

Y Guglielmi, P Cook, F Soom… - Geophysical …, 2021 - Wiley Online Library
We provide direct observations of the three‐dimensional displacements of a fluid‐driven
fracture during water injections in a borehole at∼ 1.5 km depth in the crystalline rock at the …

Investigating stress shadowing effects and fracture propagation patterns: Implications for enhanced geothermal reservoirs

A Abe, RN Horne - International Journal of Rock Mechanics and Mining …, 2021 - Elsevier
During hydraulic stimulation treatment in an enhanced geothermal (EGS) reservoir, it has
been suggested that new fractures are initiated from stimulated preexisting fractures and …