... an isotropic condition. The analysis results indicated that anisotropy significantly affects stress and strain distributions. The proposed model was further applied to analyze the injection response in a slate geothermal site. The analysis results revealed that the proposed model could reasonably simulate...

... ABSTRACT Fracture caging is a proposed approach to geothermal energy extraction that involves using one injection well and multiple boundary wells for continuous fluid injection at high rates and pressures while controlling induced seismicity. To validate this concept, a solid block...

... ABSTRACT An understanding of fracture slip susceptibility in geothermal reservoirs is central to the control of fluid injection induced seismicity. To investigate the role of regional fracture systems on induced seismicity, a coupled thermo-hydro-mechanical (THM) model containing fracture...

... ABSTRACT The beach bar sand reservoir has the characteristics of low porosity and permeability, multiple thin layers and strong vertical heterogeneity. In recent years, the integrated technology of fracturing and flooding has been put forward. Based on the geological model of injection...

... experiment notch spacing injection mining industry adelaide principal stress mining science ABSTRACT Due to the increased understanding of mining techniques previously uneconomical larger orebodies are becoming viable and block caves are increasingly common. One such technological advance...

... at the surface which is then injected into a high porosity sedimentary reservoir. The subsurface reservoir forms a thermal battery and stores the heated brine. A subsurface water saturated high porosity sedimentary reservoir can be an ideal long-duration storage vessel, thereby providing nearly unlimited storage...

... and condensate in 2004 putting the country in the list of hydrocarbon producers worldwide. The field shut down in 2021, and is now considered as one of the most immediate candidates for geological CO 2 sequestration. As a candidate CO 2 storage site, the geomechanical risks are vital to the injectivity...

... opt for grout injection after the installation of the anchors. The present study presents the results of instrumented pull tests performed in Grouted Split Sets and its comparison with the result of tests performed in Split Sets without the application of cement, in an underground manganese mine...

... ABSTRACT Carbon dioxide (CO 2 ) injection possesses an immense potential for production improvement in heavy oil reservoirs. The primary interest of this work is to investigate the corrosion effect of carbonated water formed by CO 2 and formation water on reservoir rock...

... ABSTRACT This paper investigates the effects of the injection of (relatively) cold CO 2 into a saline aquifer, focusing on the effects that local heterogeneities may have on the geomechanical changes observed during injection. Representative properties of the Smeaheia site, a full-scale...

... are studied, including in-situ stress, casing pressure, and fluid temperature. The results indicate that tensile stresses may be generated in the circumferential direction of the cement sheath during supercritical CO 2 fluid injection. When the tensile stress exceeds the tensile strength of the cement sheath...

... possible if the fracture becomes contained at depth. In the absence of any heterogeneity, assuming a Newtonian fluid, an impermeable medium subjected to linear background stress, and a block injection, Möri and Lecampion (2023) have shown that the containment depends on a single, dimensionless buoyancy...

... to provide a fast preliminary assessment of fault stability for fluid injection strategies in reservoirs or aquifers. The method allows to identify: i) the impact of the uncertain parameters affecting the fault stability; ii) possible critical cases for which a refinement of the analyses is required, e.g. 3D...

... for the permeability changes associated with the fracture opening. By combining the scaling analysis and numerical simulations, we examine the evolution of both the shear and opening fronts as a function of the hydro-mechanical properties of the pre-existing discontinuity, in-situ stress state, and the fluid injection...

... to forecast subsequent changes to these horizontal stress magnitudes associated with pore fluid pressure depletion or injection (stress paths) is vital for unconventional resources development planning, including predicting maximum injection pressures for gas containment associated with cyclic "huff and puff...

... history. The fault has a higher tendency to yield in the following situations: 1. Active fault; 2. Wider fault; 3. Injection beyond a pressure threshold; 4. Inclined fault; and 5. More cycles of loading-unloading. The study also reveals the distribution of the yield pattern in different conditions above...

... ABSTRACT The injection of fluids in geothermal energy, as well as in CCS, is accompanied by changes in stresses due to the reduced temperatures and elevated pressures. This can result in unwanted hydraulic fracturing and fault reactivation. We have developed a fast, semi-analytic tool...

... ABSTRACT Large-scale geothermal energy production and carbon geological storage are emerging technologies. Injection of non-native fluids in the subsurface alters reservoir pore pressure and temperature changing the initial state of stress, even beyond the plume and thermal front, which could...

... ABSTRACT Steam huff and puff is the main production mode of heavy oil, but the casing damage problems during the cyclic thermal injection process are very serious. The casing damage of thermal recovery wells is an important factor affecting oilfield production and economic benefits...

... geological subdiscipline propagation production control injection fault reactivation limestone rock type wellbore integrity production monitoring mudstone cold co 2 hajiabadi denmark government chemical flooding methods reservoir characterization injection well simulator scenario...