Steven R. Pride
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View article: Estimating shallow compressional velocity variations in California’s Central Valley
Estimating shallow compressional velocity variations in California’s Central Valley Open
SUMMARY A theory for modelling the evolution of elastic moduli of grain packs under increasing pressure is combined with a method that accounts for the presence of fine-grained particles to develop a new conceptual framework for computing …
View article: Estimating shallow compressional velocity variations in California's Central Valley
Estimating shallow compressional velocity variations in California's Central Valley Open
A set of 44 sonic velocity well logs from the southern San Joaquin Valley are combined with soil textural data to derive a three-dimensional compressional velocity model. The compaction of a granular medium containing fines provides a conc…
View article: Stable drainage in a gravity field
Stable drainage in a gravity field Open
During drainage, as a voxel of porous material is being actively invaded prior to percolation, the invading nonwetting fluid cannot be transmitted to the neighboring downstream voxel until a critical nonwetting saturation ($S_{nc}$) is rea…
View article: Molecular Interactions Behind Carbonate Compaction
Molecular Interactions Behind Carbonate Compaction Open
View article: Imaging of a fluid injection process using geophysical data — A didactic example
Imaging of a fluid injection process using geophysical data — A didactic example Open
In many subsurface industrial applications, fluids are injected into or withdrawn from a geologic formation. It is of practical interest to quantify precisely where, when, and by how much the injected fluid alters the state of the subsurfa…
View article: Interaction of a normally-incident plane wave with a nonlinear poroelastic fracture
Interaction of a normally-incident plane wave with a nonlinear poroelastic fracture Open
While it has been recognized that a large amplitude incident wave upon a dry fracture can exhibit nonlinear seismic wave scattering due to its stress-dependent mechanical compliance, the impact of pore fluid in the fracture and a fluid-fil…
View article: Calculating Trajectories Associated With Solute Transport in a Heterogeneous Medium
Calculating Trajectories Associated With Solute Transport in a Heterogeneous Medium Open
We present a trajectory‐based technique for calculating solute transport in a porous medium that has several advantages over existing methods. Unlike streamlines, the extended trajectories are influenced by each of the important parameters…
View article: Micro-Pet Data From Core Injection Experiment
Micro-Pet Data From Core Injection Experiment Open
Ascii file containing the micro-PET normalized radioactivity data. The format is x(cm), y(cm), z(cm), time(seconds), normalized radioactivity value . . .
View article: Micro-Pet Data From Core Injection Experiment
Micro-Pet Data From Core Injection Experiment Open
Ascii file containing the micro-PET normalized radioactivity data. The format is x(cm), y(cm), z(cm), time(seconds), normalized radioactivity value . . .
View article: Dispersive transport and symmetry of the dispersion tensor in porous media
Dispersive transport and symmetry of the dispersion tensor in porous media Open
The macroscopic laws controlling the advection and diffusion of solute at the scale of the porous continuum are derived in a general manner that does not place limitations on the geometry and time evolution of the pore space. Special focus…
View article: Onsager symmetry from mesoscopic time reversibility and the hydrodynamic dispersion tensor for coarse-grained systems
Onsager symmetry from mesoscopic time reversibility and the hydrodynamic dispersion tensor for coarse-grained systems Open
Onsager reciprocity relations derive from the fundamental time reversibility of the underlying microscopic equations of motion. This gives rise to a large set of symmetric cross-coupling phenomena. We here demonstrate that different recipr…
View article: Changes in geophysical properties caused by fluid injection into porous rocks: analytical models
Changes in geophysical properties caused by fluid injection into porous rocks: analytical models Open
Analytical models are provided that describe how the elastic compliance, electrical conductivity, and fluid‐flow permeability of rocks depend on stress and fluid pressure. In order to explain published laboratory data on how seismic veloci…
View article: Trajectory‐based modeling of fluid transport in a medium with smoothly varying heterogeneity
Trajectory‐based modeling of fluid transport in a medium with smoothly varying heterogeneity Open
Using an asymptotic methodology, valid in the presence of smoothly varying heterogeneity and prescribed boundaries, we derive a trajectory‐based solution for tracer transport. The analysis produces a Hamilton‐Jacobi partial differential eq…
View article: Mapping the mechanical properties of rocks using automated microindentation tests
Mapping the mechanical properties of rocks using automated microindentation tests Open
A microindentation scanner is constructed that measures the spatial fluctuation in the elastic properties of natural rocks. This novel instrument performs automated indentation tests on the surface of a rock slab and outputs 2‐D maps of th…
View article: Lattice Boltzmann method for diffusion-limited partial dissolution of fluids
Lattice Boltzmann method for diffusion-limited partial dissolution of fluids Open
A lattice Boltzmann model for two partially miscible fluids is developed. By partially miscible we mean that, although there is a definite interfacial region separating the two fluids with a surface tension force acting at all points of th…