... material parameter viscoplastic model complex reservoir rock type reservoir geomechanics conductivity differential stress creep strain conductivity model deformation shale reservoir pore pressure viscoplastic strain fracture conductivity creep experiment ARMA 23-0264 Study on the Elasto...

... lifespan structural geology creep strain evacuation upstream oil & gas rock salt casing integrity mud drop partial evacuation symposium internal pressure creep rate creep deformation deformation sensitivity analysis wellbore lifespan full evacuation wellbore salt rock ARMA 21 1994...

... mechanics geomechanics symposium us rock mechanics geomechanics symposium hydraulic fracturing upstream oil & gas indentation creep rate creep strain plastic deformation creep behavior ABSTRACT: Several studies have demonstrated the application of nanoindentation to study mechanical...

... of the least principal stress with depth have an important influence on vertical hydraulic fracture propagation. shale gas fracturing fluid Reservoir Characterization hydraulic fracturing reservoir geomechanics proppant creep strain Upstream Oil & Gas variation hydraulic fracture...

... and therefore a creep compliance function is needed to extrapolate laboratory findings and to model long-term behavior. reservoir geomechanics Upstream Oil & Gas Artificial Intelligence Reservoir Characterization complex reservoir Prony series experiment creep data creep test creep strain...

... experiment reservoir geomechanics creep response axial pressure step Faulkner creep strain ductile behavior lateral direction Upstream Oil & Gas differential stress step strain response differential stress Magnitude Shale gas Reservoir Rock deformation damage zone 1. INTRODUCTION...

... and modeling of subsidence has been very strong since the early nineties. Upstream Oil & Gas elasto-visco-plastic constitutive behavior Reservoir Characterization modeling Simulation Fluid Dynamics creep strain specimen creep strain rate geomechanical subsidence modeling reproduce...

... tests were performed on several selected samples, and then multi-stage triaxial creep tests were carried out at room temperature. Samples used in the tests come from three different gas shale reservoirs. It is found that the creep strain can be described by a power-law function of time. The clay...

... to creep deformation in beddingperpendicular direction than in bedding-parallel directions. The amount of creep strain increases with sample clay content, regardless of the carbonate content, where a pronounced increase in creep strain occurs at around 35-40% clay content. The amount of creep strain...

.... Second, it is helpful to produce a baseline set of data from our own laboratory, on a well understood material, with which to compare subsequent results on more complex samples. shale gas Upstream Oil & Gas creep strain nitrogen coal bed methane complex reservoir pore pressure...

... coefficient Haynesville sample Reservoir Characterization Upstream Oil & Gas creep strain coefficient Barnett shale 1. INTRODUCTION Recent technological advances in exploiting unconventional tight gas reservoirs have been facilitated by the combination of horizontal drilling and multi-stage...

... ABSTRACT: Creep strain experiments on uncemented reservoir sands suggest that the time-dependent component of deformation can be modeled using linear viscoelasticity theory. The standard approach to solving for the values of the appropriate model parameters is to fit creep strain data...

... by creep strain observations. 1. INTRODUCTION Coal bed methane (CBM) production from unmineable coal seams is considered to be an unconventional gas resource; methane is typically generated during the coal maturation process and resides in the coal matrix as an immobile, adsorbed phase. During CBM...

... strain is best considered as viscoplastic deformation. Creep behavior is different above and below 30 MPa confining pressure. Above 30 MPa, the amount of creep strain is constant with equal pressurization steps, indicating a linear viscous rheology. Below 30 MPa, the amount of creep increases linearly...

... Westinghouse Government Environmental Services LLC, Carlsbad, New Mexico, USA ABSTRACT: An elasto-plastic-creep material model is developed for modeling the faihu'e of geo-materiais. The plastic and creep strains are accounted for through the strain decomposition technique. The Dmcker- Prager yield function...

... Characterization Upstream Oil & Gas Lorraine metals & mining creep potential creep strain Artificial Intelligence strength dilatancy angle reservoir geomechanics take account constitutive model distortion coupling iron ore mechanism failure surface plasticity pillar Simulation creep...

... ABSTRACT: The rheological behavior of salt rock is studied by both uniaxial and triaxial relaxation tests. In order to investigate the relaxation behavior of salt rock, stepwise relaxation tests were performed after the sample had been subjected to different pre-relaxation creep strains...

... to study the Kaiser effect characteristics of a rock specimen in which creep strain is recognized. This article explains the results of the experiments conducted to solve these problems. 2. EXPERIMENTATION APPARATUS AND METHOD OF EXPERIMENT Fig. 1 is a block diagram of the experimentation apparatus...

... form that gives the creep strain rate as a function of stress, temperature and time or accumulated creep strain. The table also provides the parameter values determined for these laws by fitting them to a common data base. Exponential -Time Creep Law An exponential-time creep law was selected...

... case. The joint creep strains, Ccj , are a fictitious quantity obtained by sub- tracting the creep strains for an intact specimen from the total creep strains for the jointed sample at the same stress level; in other words, Ccj represents the additional average creep strain in the sam- ple due...