... start and the subsequent slip, 2) the slip velocity at the beginning of slip was affected by the surface shape of the fracture, 3) and the slip velocity of the subsequent steady slip tended to decrease as the temperature increased. Under 350-500 oC, the pore pressure at the beginning of slip decreased...

... 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...

... Wellbore Design drilling fluid mud pressure Reservoir Characterization shallow sediment high mud pressure wellbore integrity pore pressure isrm international symposium Upstream Oil & Gas inward displacement asian rock mechanics symposium 29 Drilling plastic deformation wellbore...

... 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 international symposium...

... Artificial Intelligence pore pressure flow in porous media viscosity non-darcy flow test isrm international symposium Upstream Oil & Gas flow rate coefficient Forchheimer equation asian rock mechanics symposium 29 equation sandstone non-darcy coefficient permeability machine...

... Reservoir Characterization reservoir geomechanics geothermal reservoir pore pressure initial effective normal stress Upstream Oil & Gas displacement isrm international symposium flow in porous media Fluid Dynamics natural fracture asian rock mechanics symposium 29 fracture...

... for peak strength. The choice of coefficient values was proposed for stress analysis and failure evaluation, in intact rock structures or structures in rock mass. dassanayake asian rock mechanics symposium arms8 peak strength hydrostatic test Upstream Oil & Gas pore pressure fractured rock...

... 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...

... 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...

...-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...

... 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...

... 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...

..." 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...

... in 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...

... 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 shale compaction is described...

... reservoirs around the world. Chalaturnyk and Li (2004) concluded that steam stimulation, one of the most successful thermal processes, can affect the rock formations. Indeed steam stimulation can reduce the effective stresses by varying the pore pressure, induce oil sands to shear, generate compaction...

... 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...

... and 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...

... 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...

... Upstream Oil & Gas pore pressure reservoir geomechanics displacement injection cycle boundary overpressure shear failure subsidence gas field Reservoir Characterization caprock gas storage teatini storage program variation vertical displacement Scenario geomechanical effect...