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Keywords: co 2
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0057
..., and underestimated the initial compliant porosity of the sandstone. This phenomenon continued to influence the stress-strain behaviors during the triaxial loading stage. Reservoir Characterization Upstream Oil & Gas structural geology subsurface storage co 2 threshold strength...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0064
... ABSTRACT: Supercritical carbon dioxide (CO 2 ) is used as a heat transmission fluid for the geothermal development in enhanced geothermal systems (EGS), aiming at improving the efficiency of heat mining and alleviating the emission of the world greenhouse gas. Buoyancy effects contributed by...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0129
... ABSTRACT: Reliable estimation of debonding and leakage path formation at a well's cement and caprock interface is particularly important for long term CO 2 sequestration, where sealing of the injection wells has to last for centuries and where stresses will likely evolve with time. Models...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0252
... ABSTRACT: It is well recognized that injecting CO 2 in methane-saturated coal seams can initially decrease the injectivity, followed by a permeability rebound as gas pressure increases. Studies showed that such permeability change is related to the adsorption-deformation coupling which is...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0379
... about one third of the uniaxial strain loading compressibility in the range of mean effective stress from 10 to 14 MPa. The uniaxial strain compressibility is expected to be roughly one half of the isotropic compressibility. Reservoir simulation of CO 2 injection in a compartmentalized formation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0442
... injection method shale gas complex reservoir bedding direction peak position nanopore co 2 coal bed methane coal seam gas coal international journal reservoir geomechanics coalbed methane Upstream Oil & Gas stress loading evolution perpendicular compression anisotropy structure...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0450
... specimen showed plasticization under a higher confining stress condition; anthracite coal has a strong adsorption effect on CO 2 and the free gas phase CO 2 adsorption can cause a dramatic peak strength deterioration; coal strength deterioration was exacerbated with respect to gas pressure. However, as...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1751
... ABSTRACT: As a representative technology of non-aqueous fracturing, super-critical carbon dioxide(SC-CO 2 ) fracturing has become a research focus in the development of tight reservoir. The weak plane is widely distributed in the tight reservoir, such as natural fractures and bedding planes...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1759
... ABSTRACT: Super-critical CO 2 (SC-CO 2 ) fracturing can be a promising technique for developing tight reservoirs. Because the propagation of artificial fractures always susceptible to the weak plane, it is necessary to study the fracture toughness of tight sandstone with a weak plane in the...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1753
... ABSTRACT: CCS is a well-studied technology to efficiently reduce anthropogenic CO 2 from the atmosphere, which is believed to be one of the main factors contributing to global warming. In this paper, we investigate possible changes in the mechanical properties of a shale caprock, when in...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1822
... ABSTRACT: To qualitatively analyze fracture geometry and fracture mode in supercritical CO 2 (SC-CO 2 ) fracturing, we conducted laboratory fracturing experiments using the man-made sample with a size of 30×30×30c m 3 under triaxial stresses. The induced fracture geometry was digitized to...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1795
... networks are different from those in conventional reservoirs and thus the fluids transport in EOR processes behave differently. In a CO 2 -EOR process, the adsorption and diffusion play major roles from both perspectives of production performance and CO 2 storage. In addition, our better understanding of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1864
... shear strength, the shear bond strength of cement-casing samples increases with the curing time. Corrosion experiment of cement-casing samples were aged in CO 2 environment (0.54MPa) under both formation temperature (140°C) and room temperature (25°C). Experimental result showed that interface...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1976
... ABSTRACT: In view of the physical–chemical properties of CO 2 , this paper studied the impact of CO 2 –brine–rock interaction on rock properties and fracture propagation during supercritical CO 2 fracturing in Chang-7 tight sandstone. A series of static soaking experiments and true triaxial...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1983
... ABSTRACT: Carbon dioxide (CO 2 ) sequestration is one of the emerging strategies to contain anthropogenic carbon. Successful application of CO 2 based Enhanced Oil recovery (EOR) techniques and its storage in unconventional reservoirs requires comprehensive understanding of CO 2 -fluid-rock...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2020
... parameters to improve the applicability of the study. wellbore integrity fracture initiation pressure transverse fracture Upstream Oil & Gas co 2 4 0 hydraulic fracturing orientation wellbore azimuth azimuth sin 2 regime wellbore pressure wellbore wellbore inclination inclination...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1944
... rupture along the fault zone, or even to estimate the magnitude of seismic events. Reservoir Characterization South Korea geomechanical response subsurface storage Simulation Upstream Oil & Gas Storage Site reservoir geomechanics fault reactivation co 2 investigation flow simulator...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1936
... ABSTRACT: Carbon dioxide (CO 2 ) fracturing has the advantage of creating complex hydraulic fractures (HFs). However, the characteristics of HFs induced by supercritical CO 2 (Sc-CO 2 ) in tight sandstones remain unclear. In this study, laboratory true triaxial fracturing experiments were...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2132
... ABSTRACT: Gaseous CO 2 becomes a supercritical liquid when temperature and pressure transit the critical point (31.10 °C and 7.39 MPa). During CO 2 storage for carbon sequestration and CO 2 injection in enhanced coalbed methane/shale (ECMB) recovery, CO 2 can readily reach its critical...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0480
... permeability co 2 seismicity stress change deformation 1. INTRODUCTION The successful storage of carbon dioxide (CO2) at commercial scale requires to evaluate potentials of the seismic hazard and its affects on mechanical stability of the target formation [Verdon, 2013]. Injection-induced seismicity...

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