..., a uniaxial compression-failure condition should predict perforation failure leading to sand influx in production wells. The major difference between these situations is that, at sufficient depth of burial, the tensile strength of a friable rock mass has only a minor effect on the fracturing pressure level...

... configurations are given. The Appendix contains derivations of the dimensionless variables and the drawdown parameter. 24 5 1984 18 2 1985 26 2 1985 1 10 1985 1 10 1985 Copyright 1985, Society of Petroleum Engineers type-curve match production control compressibility...

... Engineers experiment dimension sandstone compressibility flow rate aspect ratio thickness pore structure klinkenberg plot pore overburden pressure reservoir characterization penny-shaped crack flow in porous media upstream oil & gas surface area porosity reduction permeability...

...W. R. Rossen; J. P. Kohn Compression to reservoir pressures can alter microemulsion phase behavior, on which the success of microemulsion-based EOR processes depends. For convenience, however, phase behavior studies usually are conducted at atmospheric pressure. Extrapolating phase behavior data...

... pressure upstream oil & gas fracture network coefficient compressibility complex reservoir equation reservoir drawdown test drillstem testing reservoir surveillance fractured reservoir hydraulic fracturing straight line displacement permeability barenblatt production control fluid...

... pressure steam-assisted gravity drainage production rate simulator thermal method new concept equation compressibility injection sand deformation pressure production period upstream oil & gas porosity change sagd calculation enhanced recovery hysteresis multiplication factor...

... by the theory. The porosity of tight sand cores decreases linearly with the log of net confining stress, in accordance with the Walsh-Grosenbaugh model of crack compressibility. This detailed agreement supports the theory and indicates that the permeability of tight gas sand cores is due to microcracks. (2...

... of Petroleum Engineers permeability diagonal case kpa compressibility grid system gridblock icvf fracture source sink hydraulic fracturing ellipse psia equation upstream oil & gas flow rate dimensionless time flow in porous media numerical reservoir simulation drillstem/well testing...

..., and other parameters relevant to water influx and effective compressibility. Well-known methods 1 – 4 of determining average static pressure, p ¯ , have at least two shortcomings: (1) an estimation of reservoir shape and (2) an often-neglected implicit relationship between p ¯ and the viscosity...

... diffusion equation we obtain (1) ( β   k + β ) ( ∂ P ∂ x )   2 + ∂ 2 P ∂ x 2 = μ ϕ ( β   s + β ) k ∂ P ∂ t , where β is fluid compressibility, β s is rock compressibility, and β k...

... transmissivity wellbore storage effect compressibility wellbore storage drillstem testing drillstem/well testing storage relative permeability curve reservoir pressure change equation saturation drawdown Pressure transient data analysis is the most common method of obtaining estimates...

... Copyright 1980, Society of Petroleum Engineers Reservoir Surveillance temperature change calculation pressure drop production control Upstream Oil & Gas Derivation pressure change Drillstem Testing compressibility flow rate unit slope production monitoring drillstem/well testing heat...

... α 2 t , (5) v = R 2 / 4 α 1 t . Moench liquid water saturation dimensionless pressure Upstream Oil & Gas finite difference solution Stanford nonlinearity equation compressibility Geothermal reservoir engineering vaporization reservoir...

..., or gas at specified rate subject to injectivity against a maximum bottomhole pressure. Water and saturated steam PVT properties determined from the steam table. Fluid and rock compressibility. Automatic time-step control based on changes in the dependent variables. The simulator has...

...Chi U. Ikoku; Henry J. Ramey, Jr. The transient flow behavior of non-Newtonian fluids in petroleum reservoirs is studied. A new partial differential equation is derived. The diffusivity equation is a special case of the new equation. The new equation describes the flow of a slightly compressible...

... conductivity. The method uses existing analytical solutions giving pressure-production performance of a radial or linear aquifer connected performance of a radial or linear aquifer connected to a reservoir with constant compressibility. The novelty of the method is the use of these solutions to predict...

... intersection locations and in-situ thermal conductivity were determined from flowing temperature logs. In-situ measurements of rock permeability and compressibility show a strong dependence on pore pressure. An estimate of the minimum horizontal earth stress was derived from fracture extension pressures...

... and can properly be practical rock properties and can properly be neglected. Gavalas and Seinfeld also made this assumption. The rock properties needed in the flow equation porosity, permeability, and pore compressibility as porosity, permeability, and pore compressibility as functions of pressure...

... was considerably higher than porosity determined by water saturation, indicating porosity determined by water saturation, indicating inaccessible pore volume to water. Pore compressibility was determined under triaxial stress-loading conditions. Changes in porosity with overburden pressure were more significant...

...-difference form these equations are the following. SPEJ P. 235 1 10 1976 1 10 1976 1976. Society of Petroleum Engineers thermal method SAGD Fluid Dynamics water saturation Artificial Intelligence reservoir simulation compressibility flow in porous media Upstream Oil & Gas...