Results 201 to 210 of about 162,962 (266)
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The Leading Edge, 2002
Fluid pressures in the pore spaces of rocks are critical to several aspects of petroleum exploration and production. However, a general understanding of some basic concepts has been obscured by a lack of consistency in terminology. It is the intent of this paper to clarify the meaning of certain terms so that the many disciplines involved with, and ...
Bob Bruce, Glenn Bowers
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Fluid pressures in the pore spaces of rocks are critical to several aspects of petroleum exploration and production. However, a general understanding of some basic concepts has been obscured by a lack of consistency in terminology. It is the intent of this paper to clarify the meaning of certain terms so that the many disciplines involved with, and ...
Bob Bruce, Glenn Bowers
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Hydrostatic pore water pressure revisited
Basin Research, 2022AbstractHydrostatic or “normal” pressure can be easily visualized as a water column with pressure given by ρgh and any departures classified as abnormal pressure. This is the basis for commonly used hydrostatic pressure depth trends in sedimentary basins that are constructed on assumptions of constant gradients and are datumed at mean sea level or ...
Simon A. Stewart, Markus Albertz
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Relationship Between Fracture Propagation Pressure And Pore Pressure
SPE Annual Fall Technical Conference and Exhibition, 1977Abstract Fracture stimulation data have been analyzed in conjunction with reservoir pressure buildup surveys to investigate the relationship between pore pressure and fracture propagation pressure in the geopressured Vicksburg formation in South Texas.
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2018
The pressure of the pore water in a porous material is a measure of the state of the water.
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The pressure of the pore water in a porous material is a measure of the state of the water.
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Consolidation Around Pore Pressure Meters
Journal of Applied Physics, 1953Response of pore pressure meter on variations in loading conditions of surrounding soil is retarded by the necessity that pore water has to enter the instrument. This property is introduced as an instruments coefficient influencing the boundary conditions.
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Pore Pressure Development During Cyclic Loading
Journal of Geotechnical Engineering, 1983A mathematical expression is developed for the relationship between the excess pore pressure buildup in sands during cyclic loading and the normalized number of cycles. This expression is based on the equations proposed by previous investigators, but the effects of anisotropic stress conditions are represented more accurately. The new method is capable
CHANG, CS, KUO, CL, SELIG, ET
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Effective stress and pore pressure
1995Total stress is the stress acting on a plane, assuming the soil to be a solid material. For the small soil element shown in Figure 4.1, at a depth z below ground level, the vertical total stress, σv, would be the stress acting on the horizontal surface of the element.
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Pore Pressure Determination Methods
2019Overpressure situation can be created in both clastic and non-clastic reservoirs when at some depth the formation pressure exceeds what is expected for a hydrostatic (normal/lithostatic) pressure scenario. Likewise an underpressure situation has also been reported from reservoirs after sufficient hydrocarbons have been extracted.
Troyee Dasgupta, Soumyajit Mukherjee
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Nonlinear Pore Pressure Equation
Journal of the Soil Mechanics and Foundations Division, 1972Linear stress-strain equations are generally employed in the solution of soil displacement problems; however, those equations are usually valid for small deformations only. Displacements encountered in soil mechanics problems are often of large magnitudes and therefore a nonlinear stress-strain equation should be used.
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