Pattern formation during air injection into granular materials confined in a circular Hele-Shaw cell

Ø Johnsen, R Toussaint, KJ Måløy, EG Flekkøy - Physical Review E—Statistical …, 2006 - APS
We investigate the dynamics of granular materials confined in a radial Hele-Shaw cell,
during central air injection. The behavior of this granular system, driven by its interstitial fluid …

Morphodynamics during air injection into a confined granular suspension

C Chevalier, A Lindner, M Leroux, E Clément - Journal of Non-newtonian …, 2009 - Elsevier
We study the injection of air into a granular suspension in a confined geometry. The grains
and the suspending fluid are density matched allowing to vary the grain fraction ϕ over the …

Decompaction and fluidization of a saturated and confined granular medium by injection of a viscous liquid or gas

Ø Johnsen, C Chevalier, A Lindner, R Toussaint… - Physical Review E …, 2008 - APS
We compare quantitatively two experimental situations concerning injection of a miscible
fluid into an initially jammed granular medium saturated with the same fluid, confined in a …

Coupled air/granular flow in a linear Hele-Shaw cell

Ø Johnsen, R Toussaint, KJ Måløy, EG Flekkøy… - Physical Review E …, 2008 - APS
We investigate experimentally the pattern formation process during injection of air in a
noncohesive granular material confined in a linear Hele-Shaw cell. We characterize the …

Variety of stylolites' morphologies and statistical characterization of the amount of heterogeneities in the rock

A Brouste, F Renard, JP Gratier… - Journal of Structural …, 2007 - Elsevier
The surface roughness of several stylolites in limestones was measured using high-
resolution laser profilometry. The 1D signals obtained were statistically analyzed to …

Morphodynamics during air injection into water-saturated movable spherical granulates

XZ Kong, W Kinzelbach, F Stauffer - Chemical Engineering Science, 2010 - Elsevier
Laboratory air injection experiments in a two-dimensional vertically placed cell filled with a
water-saturated packing of spherical glass beads show a particular transition of air flow …

Quantitative sand-production prediction: Friction-dominated flow model

P Cerasi, E Papamichos, JF Stenebråten - SPE Latin America and …, 2005 - onepetro.org
We present here a simplified, analytical 2D model of sand production. Computing sanding
for different failed zone geometries allows us to put lower and higher bounds on expected …

Formation of Martian araneiforms by gas‐driven erosion of granular material

S de Villiers, A Nermoen, B Jamtveit… - Geophysical …, 2012 - Wiley Online Library
Sublimation at the lower surface of a seasonal sheet of translucent CO2 ice at high southern
latitudes during the Martian spring, and rapid outflow of the CO2 gas generated in this …

Insights in erosion instabilities in nonconsolidated porous media

P Cerasi, P Mills - Physical Review E, 1998 - APS
We investigate the different flow regimes in nonconsolidated porous media. The porous bulk
is soaked with water, which is then pumped out of it, across the boundary defined by the …

High-permeability channels in proppant packs containing random fibers

PR Howard, SG James, D Milton-Tayler - SPE Production & Facilities, 1999 - onepetro.org
This paper discusses laboratory studies to determine the nature of channel growth and
stability in proppant packs with and without fibers. Tests were performed with proppant …