... is particularly challenging. In this work, we present the measurements of the Biot’s effective coefficient α and the Skempton’s B . The measurements on α are made by using strain gauges by following two different approaches: (1) α = 1 − K/Ks, K is the drained bulk modulus and Ks the grain bulk modulus...

..., 1992). The concept of effective stress has been proved to be very useful in describing the effect of pore fluid pressure on the mechanical response of porous earth materials, and this effective stress concept was firstly introduced by Terzaghi (1936) for soil, and then was modified by Biot (1941...

..., injection-induced cooling. enhanced recovery reservoir simulation Biot Modeling & Simulation waterflooding aperture normalized time coefficient complex reservoir Berea sandstone geomechanics formulation equation multiphase flow reservoir fracture hydraulic property hydraulic...

... and they are not suitable for studying wellbore stability under dynamic loads. This paper deals with the wellbore stability of an inclined borehole induced by the drilling and the pressurization. In order to analyze the transient response and discover the main factors which influence the wellbore stability, the Biot's...

... ABSTRACT: Understanding subsurface stress modifications and the resulting permeability evolution in unconventional reservoirs, both functions of effective stress, is valuable when evaluating their technical and economic feasibility. As a part of this study, the variation of anisotropic Biot's...

... saturation among others affects the mechanical response of the rock. To complete the understanding of the Vaca Muerta formation mechanical behavior, special laboratory studies like Biot's coefficient and creep test were performed in some core shale gas samples; nevertheless, in this work, the quality...

... ABSTRACT: Biot’s effective stress law has been proved to be very useful in describing the effect of pore fluid pressure on the mechanical response of rocks and understanding the poroelastic effects in unconventional shale or mudstone formations. In this work, six mudstone source rock samples...

... consolidation pulse loading test coefficient Upstream Oil & Gas pressure pulse loading consolidation coefficient procedure Reservoir Characterization Biot permeability testing permeability measurement analytical solution effective stress consolidation strain creep bulk modulus loading...

... Abstract: Horizontal drilling and multistage fracturing are applied in the Bakken Formation to more efficiently produce hydrocarbons. However, lacking of or insufficient knowledge of Bakken rock Biot's coefficient makes the successful drilling of horizontal well with multistage fracturing...

... Abstract Biot’s coefficient can be expressed by a few different equations, and consequently, these equations may represent different approaches to measure this coefficient. We developed a combined method to measure the Biot’s coefficient by three different approaches based on three different...

..., to provide a reference for better interpretation of real rock behavior. Upstream Oil & Gas approximation Artificial Intelligence Biot mudstone coefficient pore pressure pressure depletion reservoir geomechanics compressibility depletion porosity Poisson deformation effective stress...

... under in-situ conditions, thus ensuring the success of hydraulic fracturing. Biot's coefficient is one of the key poroelastic parameters for calculating the effective stress for creating artificial fractures in the shale formations. In this study, we propose anew method to measure the Biot's coefficient...

... the so called drilling window or drilling margins . The purpose of this study is to investigate the significance of a log-derived Biot s coefficient and rock stiffness in the estimation of the effective stresses used in the calculation of the shear failure pressure. The goal is to reduce uncertainties...

... Abstract: Biot’s coefficient, a parameter connecting the effect of pore pressure on the effective stress in porous media, has been widely used to obtain the effective stress in isotropic formations. For anisotropic formations, recent experimental data and modeling results indicate...

... mass Biot solid mass open-system geomechanics open-system geomechanics model saturation permeability Skempton coefficient equation agreement 1. OPEN-SYSTEM GEOMECHANICS Open thermodynamic systems can exchange with exterior not only by energy but by mass as well. In this case use of so...

... ABSTRACT: The effective stress coefficient, introduced by Biot, is used for predicting effective stress or pore pressure in the subsurface. It is not a constant value. It is different for different types of sediment and it is stress dependent. We used a model, based on contact between...

...; illustrations may not be copied. The abstract must contain conspicuous acknowledgement of where and by whom the paper was presented. ABSTRACT: Minimum horizontal stress calculations require knowledge of the stress coupling coefficient (Ko), overburden stress, pore pressure, and Biot s coefficient. We have...

... than saturated static bulk moduli. NMR studies shows that Biot s flow should occur only in large pores in greensand while, Biot s flow should not occur in micro-pores. Differences of fluid flow in macro-pores and micro-pores pores are related to the high frequency squirt flow in greensand. Therefore...

... theoretically established in the linear theory of poroelasticity by Biot in 1941 [1]. Since then, it has become a powerful theory for modeling three-dimensional fluid flow in deformable porous media in soil and rock mechanics. The earliest theory of poroelasticity has been reformulated by Biot himself [2, 3...

... ABSTRACT : Biot''s constant has a significant influence on in-situ stress calculation, which is an important input in many petroleum related rock mechanics applications. It is commonly assumed, or empirically derived. Stress-dependent nature of Biot''s constant is given much less attention...