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Keywords: pore pressure
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Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-086
... temperature increased. Under 350–500 °C, the pore pressure at the beginning of slip decreased as temperature increased. Therefore, it is suggested that slower slip with a smaller pore pressure, namely, a more stable slip, may occur as the temperature increases. The permeability change before and after the...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-131
... Abstract The pore pressure propagation is very important for wellbore stability analysis of shale formations. The propagation of pore pressure occurs when shale is exposed to drilling mud, and the driving forces mainly include hydraulic pressure and chemical osmotic potential gradients. The...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-136
... the formation, the pore pressure within the near-wellbore region could be raised, resulting in tensile hoop stress at the wellbore and thus fracturing of the wellbore. Some implications for drilling stable wells in weakly consolidated formations have been provided based on the numerical analysis...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-162
...) after mining was completed in Area 4.1. metals & mining Reservoir Characterization stick-slip behavior Upstream Oil & Gas reservoir geomechanics inverse velocity asian rock mechanics symposium 29 surface movement pore pressure weak plane Thailand rainy season isrm...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-197
... sandstones that have different properties like pore diameter and permeability. Variation of the coefficient depending on the properties of the supercritical CO 2 was also assessed by a series of non-Darcy tests under different pore pressure. It was identified that the coefficient could be different...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-256
... granite in response to fluid injection under a constant normal stress and a constant critical shear stress, respectively. In the most cases, the pore pressure at the injection-induced failure exceeds that predicted by the Mohr-Coulomb failure criterion. This is attributed to the nonuniform distribution of...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-147
... construction is essential to employ appropriate countermeasures in a timely manner to maintain pore pressure around the storage caverns. At Namikata site, a three-dimensional hydrogeological model was developed as one of the key tools for the observational construction based on the groundwater monitoring. The...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-228
...-tightness evaluation is essential for the risk assessment on the underground LPG storage cavern. However, the conventional air-tightness evaluation methods apply the groundwater simulation and rock mechanical analysis respectively and have difficulty to represent the pore-pressure and gas pressure while...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-292
... zones exist in the overlapping region and caprock, and they may be easier to damage. Reservoir Characterization displacement subsurface storage Modeling & Simulation pore pressure co 2 increment asian rock mechanics symposium arms8 geological storage injection maximal principle...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-322
... containing swelling clay, and Berea sandstone containing non-swelling clay to determine poroelastic parameters at various combinations of confining pressure (7–40 MPa) and pore pressure (5–25 MPa), namely various Terzaghi's effective stresses (2–35 MPa). Skempton's coefficient B and undrained bulk modulus...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-013
... coefficient values was proposed for stress analysis and failure evaluation, in intact rock structures or structures in rock mass. Key words: Effective stress coefficient, Modified Failure Envelope Method, peak strength, residual strength 1. Introduction Determination of the effect of pore pressure on rock...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-018
... Abstract The objective of this study is to experimentally determine the effects of pore pressure on the compressive strengths and elasticity of three Thai decorating stones. An indirect approach for determining the pore pressure in low porosity rocks is presented. Rectangular rock specimens...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-105
..." solutions for the full spectrum of boundary conditions, and concluded that these "industry-standard" models could produce unacceptable errors. Reservoir Characterization coal seam gas pore pressure pm model coal bed methane complex reservoir fracture permeability ratio permeability model...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-034
... acoustic impedance and fluid substitution was evaluated using Gassmann's equation. Thermal-Fluid-Geomechanics simulations indicated a 6% increase of the pore pressure inside the chamber during the injection and a 45% increase of the water saturation. This resulted in rock dilation and shear strain around...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-030
..., we build a simple one-dimensional compaction model that consists of sand reservoir embedded within the surrounding shale. The model assumes a poroelastic compaction in sand reservoir during production, and then shale compaction due to pore pressure diffusion in the bounding shale after depletion. The...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-040
... quartz pore pressure heavy oil reservoir Reservoir Characterization bitumen Upstream Oil & Gas rock property test campaign mineral compressional velocity high temperature reservoir geomechanics SAGD strength sandstone reduction clay mineral heavy oil static rock mechanical property...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-035
... ABSTRACT Since rock formations are always saturated by fluids, the coupled poroelastic models were developed for improved wellbore stability analysis. Poroelastic models allow to consider phenomena such as well communication with rock formation and pore pressure redistribution. This paper...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-035
... large enough are partly closed at the in-situ stress level. A few voids would slightly open with stress relief by rock sampling (B). Rock is stiff during the first cyclic loading up to in-situ stress level (B to C) because nearly no more void closure. Reservoir Characterization pore pressure...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-034
... We monitored AE events accompanied with a failure of Berea sandstone specimen induced by pore pressure increase in a tri-axial test. After the test, several located AE events were compared with X-ray CT images obtained on the fractured specimen. The comparison elucidated that most of the sources...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-155
... mechanics of solid deformation, fluid flow, and heat transfer into a single multi-physics model that solves the coupled multiphysics. A series of 2D FEM analyses on rock matrix is conducted to explain the effects of temperature and fluid flow on pore pressure. The high and low permeability values are...

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