Results 41 to 50 of about 343 (176)

Characterizing Shallow Attenuation and Microearthquake Source Parameters Using a Downhole DAS Array at the Cape Modern Geothermal Field

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Earthquake source parameters are crucial for assessing seismic hazard and understanding earthquake source physics. However, source parameter estimation is challenging for small earthquakes because they suffer notorious trade‐offs with shallow attenuation.
Hilary Chang   +4 more
wiley   +1 more source

Porous and Permeable Crystalline Basement: Evidence for Large‐Scale Hydraulic Connectivity at Kivetty, Finland

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Porosity and permeability in crystalline shield basement are commonly assumed to be low, yet some fault zones sustain fluid circulation over kilometer scales. Here we quantify multiscale fault‐zone connectivity at Kivetty, central Finland, by integrating legacy deep‐borehole data, including packer tests, downhole logs, and a long‐term multi ...
Daniel Carbajal‐Martínez   +8 more
wiley   +1 more source

Possibilities for electricity production from geothermal energy in Slovenia in the next decade

open access: yesGeologija, 2012
This article is intended to raise awareness of the public, with the aim that anyone can judge reality and accuracyof records that appear in the media on the exploitation of geothermal energy.
Dušan Rajver, Andrej Lapanje, Nina Rman
doaj  

On the Leaky Nature of Fractures in Low‐Permeability Rock

open access: yesWater Resources Research, Volume 62, Issue 8, August 2026.
Abstract Hydraulic‐test interpretation in fractured rock commonly assumes impermeable confining matrices, an assumption we show is systematically incorrect, even when the matrices are 7–14 orders of magnitude less permeable than the fracture. Fluid injected into a fracture begins to leak into the surrounding rock matrices within milliseconds to seconds,
Iman Vaezi   +3 more
wiley   +1 more source

Performance of Hybrid Single Well Enhanced Geothermal System and Solar Energy for Buildings Heating

open access: yesEnergies, 2020
The energy reserves in hot dry rock and hydrothermal systems are abundant in China, however, the developed resources are far below the potential estimates due to immature technology of enhanced geothermal system (EGS) and scattered resources of ...
Yujiang He, Xianbiao Bu
doaj   +1 more source

Thermo‐Hydrodynamic Processes of Microparticles in Fractures: A CFD–DEM Approach

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 10, Page 4230-4246, July 2026.
ABSTRACT Controlling fracture permeability plays a critical role in subsurface energy applications, particularly in geothermal energy production and enhanced carbon sequestration, where regulating fluid flow is essential. The use of microcapsules has become a promising solution to enhance fracture permeability by providing a controlled sealing ...
Hoai Thanh Nguyen, Pania Newell
wiley   +1 more source

Novel thermochemical fracturing: A breakthrough in sustainable and efficient enhanced geothermal systems (EGS)

open access: yesPetroleum
Enhanced geothermal systems (EGS) are crucial for accessing earth's vast geothermal potential, particularly in low-permeability formations. However, conventional EGS stimulation via hydraulic fracturing often entails high operational costs, substantial ...
Ahmed Al-Ghamdi   +3 more
doaj   +1 more source

Geothermal power generation potential in the United States by 2050

open access: yesEnvironmental Research: Energy
Geothermal energy provides a dispatchable source of carbon-free electricity that can balance the output of variable resources. However, geothermal provides just 3.7 gigawatts (GW _e ) ( ${\lt}$ 1%) of electricity in the United States today, mostly from ...
Chen Chen   +3 more
doaj   +1 more source

Techno-economic assessment of repurposing oil & gas wells for Enhanced Geothermal Systems: A New Mexico, USA feasibility study

open access: yesEnergy Conversion and Management: X
Enhanced Geothermal Systems (EGS) produce renewable power that can complement variable renewable sources such as wind and solar, but EGS is expensive to deploy due to high cost of drilling geothermal wells.
Bryan Higgins   +2 more
doaj   +1 more source

Anisotropic Biot Coefficient of Fractured Rocks Drives Failure Conditions in Pressurized Reservoirs

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract We present a theoretical framework to quantify the equivalent Biot coefficient tensor of fractured rock masses based on the properties of both the intact porous matrix and the fracture network. Our results show that the presence of dominant fracture sets produces an anisotropic equivalent Biot tensor, with larger values in the direction ...
Silvia De Simone
wiley   +1 more source

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