... and fracture pathway created for efficient extraction of heat in EGS reservoir. This review will contribute to the state-of-knowledge on the impact of geomechanics on fractomechanical behavior in EGS. INTRODUCTION Among several sustainable energy alternatives, geothermal energy has been widely recognized...

... ABSTRACT Pillars have a central role in an active stress management approach, which has been proposed for the extraction of thick tabular and massive hard-rock mineral deposits. A mining method making use of this approach, is the novel raise caving mining method. Initially, the pillars have...

... ABSTRACT Accurate identification and extraction of fractures in core scanning electron microscope (SEM) images are particularly important for understanding and evaluating fractures in rocks. At present, most of the fracture extraction methods do not take into account the characteristics...

... profitably salt may be produced for value addition. When the blocks have very few cracks, adding value to the salt is simpler. The current method of extracting salt includes drilling and blasting that causes unintended cracks in the blocks. The extraction of rock salt blocks using traditional cuboid-shaped...

... ABSTRACT Studies have shown that up to 85% of total shale gas-in-place could be adsorbed gas. Thus, how much more adsorbed gas can be extracted will significantly impact the ultimate gas recovery. In recent years, the concept of using thermal stimulation to enhance shale gas recovery has been...

... ABSTRACT The subsurface geothermal energy storage system uses underground temperatures for energy extraction and storage. The energy is extracted by an injection-production-shut in procedure. Working fluids (i.e., water) are injected into the underground and heated by the subsurface high...

... Abstract Increasing number studies were conducted to explore the heat extraction performance of the enhanced geothermal system (EGS). However, most previous studies ignore the wellbore fluid flow and heat transfer effects and the variation of water thermophysical properties. It is difficult...

...). The effective development and utilization of natural gas hydrate has significant implications for the world’s energy landscape, climate change and other issues(Cui et al., 2019; Li et al., 2016). Conventional methods of gas hydrates extraction include: depressurization, thermal stimulation, CO 2 replacement...

... minerals, which are greatly affected by the confining pressure and temperature, are important issues in studies on the geological disposal of radioactive waste (Tsang et al. 2012; Watson et al. 2018), enhanced geothermal systems (EGS) (Pruess 2006; Gerber and Marechal 2012), and petroleum extraction (Chen...

... ABSTRACT: Enhanced geothermal system (EGS) is the major way to extract heat from impermeable hot dry rocks. As heat mining process in EGS is complex, effective numerical simulation method is required. Lots of EGS simulation models are proposed with different kinds of fracture system using...

... gravity heat pipe power generator geothermal resources prototype renewable energy teg module module thermoelectric generator efficiency heat pipe geothermal power generation open-circuit voltage electricity generation extraction voltage output power power generation...

...ARMA 55th U.S. Rock Mechanics Symposium 21 1611 Heat extraction from a wellbore in saturated low-permeability formations during fluid circulation Wang, Yarlong Petro-Geotech Inc., Calgary, Alberta, Canada Copyright 2021 ARMA, American Rock Mechanics Association This paper was prepared...

... Abstract This paper investigates the applicability and operational characteristics of different partial pillar extraction methods for a room-and-pillar coal mining project located in the region of southern Africa. Three partial pillar extraction methods, i.e. the Pillar Splitting method...

... ABSTRACT: A fully coupled thermal-hydraulic-mechanical (THM) model was developed to investigate the heat extraction process of an artificial enhanced geothermal system (EGS). The random fracture network in the stimulated geothermal reservoir was generated by the fractal theory. The local...

.... reservoir geomechanics stability analysis extraction Reservoir Characterization stope calibration metals & mining paste-fill material underhand mining Upstream Oil & Gas Simulation peak particle velocity mining method dynamic analysis paste-filled stope horizontal stress stability...

... ABSTRACT: Mining-induced fracture fields play important role in gas extraction of underground coal mines. Low concentration of extracted gas has been observed during the mining of gas burst-prone coal seams in Shaqu Coal Mine, Shanxi province, China. Theoretical analysis and field observation...

... changes and the accidental failure of gas transmission pipeline. In this paper, the construction and operation stability of gas storage in layered salt rock are employed as the research topics. The optimal gas injection and extraction operation schemes are determined by studying the operating...

... to cave after the extraction of coal, leading to high abutment pressures applied on the tailgate and a bleeder entry and the subsequently large deformation. Hydraulic fracturing was performed on a trial basis to “soften” the massive sandstone so that it can cave after the longwall face passes...

... of a tensioned cable as strands were cut through. Upstream Oil & Gas strand load loss cable anchor deformation extensometer electronic load indicator excavation instrumentation metals & mining ground closure Anchor emca mechanical anchor longhole stope extraction underground...

..., the excavations required support tendons to improve their stability. Numerical analysis on ground closure indicated a ground closure of 400mm during the extraction of primary stopes, followed by deformation of about 600mm at the first extraction of secondary stope and eventually 800mm deformation was simulated...