Results 241 to 250 of about 515,328 (302)

Consolidation Around Pore Pressure Meters

Journal of Applied Physics, 1953
Response 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, 1983
A 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

1995
Total 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

2019
Overpressure 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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Pore pressure review

2021
Robert S. Gullco, Malcolm Anderson
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Nonlinear Pore Pressure Equation

Journal of the Soil Mechanics and Foundations Division, 1972
Linear 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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RhoVe Method Empirical Pore Pressure Transform

2018 AAPG Asia Pacific Region Geoscience Technical Workshop: Pore Pressure & Geomechanics: From Exploration to Abandonment, 2017
The rhob-velocity-effective stress (Rho-V-e) method produces a model-driven, stand-alone set of “virtual” rock properties, which at intermediate positions are consistent with Bowers (2001) method default values for the Gulf of Mexico. The RhoVe method uses a single transform to convert both compressional sonic and bulk density to common estimates of ...
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Pore Pressure Evaluation Techniques

1985
Drilling into a geopressured zone causes a change in a number of basic formation/drilling relationships. This change is usually a reversal of a gradual depth-related trend in a lithologically uniform formation. Compaction increases uniformly with depth in a normal pressured clay rock.
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pore water pressure

2014
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Movement of Pore Water, and Abnormally High Pore Pressures

1981
The distinction between ground water and pore water may not be very logical, but it has the merit of distinguishing the readily-exploitable fresher pore water near the surface from the brackish to salty water in the pore spaces of most sedimentary rocks at greater depth.
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