scholarly journals Imaging methane hydrates growth dynamics in porous media using synchrotron X-ray computed microtomography

2014 ◽  
Vol 15 (12) ◽  
pp. 4759-4768 ◽  
Author(s):  
Prasad B. Kerkar ◽  
Kristine Horvat ◽  
Keith W. Jones ◽  
Devinder Mahajan
Keyword(s):  
Porous Media ◽  
Growth Dynamics ◽  
Methane Hydrates ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

X-Ray Computed Microtomography Studies of Fluid Partitioning in Drainage and Imbibition Before and After Gel Placement: Disproportionate Permeability Reduction

SPE Journal ◽  
2006 ◽  
Vol 11 (02) ◽  
pp. 159-170 ◽  
Author(s):  
Randall S. Seright ◽  
Masa Prodanovic ◽  
W. Brent Lindquist
Keyword(s):  
Porous Media ◽  
Permeability Reduction ◽  
Water Drainage ◽  
X Ray ◽  
Before And After ◽  
Production Wells ◽  
Computed Microtomography ◽  
X Ray Computed ◽  
Phase Water ◽  
Minimal Reduction

Summary X-ray computed microtomography (XMT) was used to establish why pore-filling Cr(III)-acetate-HPAM gels reduced permeability to water much more than to oil. Our results suggest that permeability to water was reduced to low values because water must flow through gel itself, whereas oil pressing on the gel in Berea sandstone or porous polyethylene forced pathways by dehydration—leading to relatively high permeability to oil. In very permeable sandpacks, data from other researchers support ripping or extrusion mechanisms for creating oil pathways. Our XMT studies provide interesting insights into imbibition and drainage processes in water-wet and oil-wet porous media even before gel placement. Many of our observations were consistent with conventional wisdom. However, some were unexpected. Residual wetting-phase (water) saturations in Berea were surprisingly low-valued in small pores. We attribute this to surface roughness caused by clay coating on Berea's pore walls, which allowed efficient water drainage from small pores during oil injection. Introduction Gels have often been injected into production wells in an effort to reduce water production without seriously damaging hydrocarbon productivity. To be effective, the gels must significantly reduce permeability to water while causing minimal reduction in permeability to oil. Many gels exhibit this disproportionate permeability reduction, but the property has not been as predictable as we would like. If the mechanism for this property were understood, gel treatments could be applied with greater reliability. To determine this mechanism for a Cr(III)-acetate-HPAM gel, we used XMT. As an important prelude to investigating gel behavior in porous media, XMT was used to characterize imbibition and drainage processes in water-wet and oil-wet porous media before gel placement.

Imaging biofilm architecture within porous media using synchrotron-based X-ray computed microtomography

2011 ◽  
Vol 47 (2) ◽  
Author(s):  
Gabriel C. Iltis ◽  
Ryan T. Armstrong ◽  
Danielle P. Jansik ◽  
Brian D. Wood ◽  
Dorthe Wildenschild
Keyword(s):  
Porous Media ◽  
X Ray ◽  
Biofilm Architecture ◽  
Computed Microtomography ◽  
X Ray Computed

scholarly journals Imaging biofilm in porous media using X-ray computed microtomography

2010 ◽  
Vol 242 (1) ◽  
pp. 15-25 ◽  
Author(s):  
Y. DAVIT ◽  
G. ILTIS ◽  
G. DEBENEST ◽  
S. VERAN-TISSOIRES ◽  
D. WILDENSCHILD ◽  
...  
Keyword(s):  
Porous Media ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

Determination of reservoir rock residual water using X-ray computed microtomography

2018 ◽  
pp. 38-42 ◽  
Author(s):  
I.V. Yazynina ◽  
◽  
E.V. Shelyago ◽  
A.A. Abrosimov ◽  
N.E. Grachev ◽  
...  
Keyword(s):  
Reservoir Rock ◽  
Residual Water ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

Acoustic emission and X-ray computed microtomography characterization of damage accumulation in a woven Cf/SiC composite

2019 ◽  
Vol 155 ◽  
pp. 109748
Author(s):  
Yudong Xue ◽  
Qinglei Wang ◽  
Jianbao Hu ◽  
Haijun Zhou ◽  
Qingliang Shan ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Damage Accumulation ◽  
X Ray ◽  
Computed Microtomography ◽  
X Ray Computed

Experimental investigation of solute transport in variably saturated porous media using x-ray computed tomography

2021 ◽  
Vol 33 (7) ◽  
pp. 076610
Author(s):  
Chunwei Zhang ◽  
Yun She ◽  
Yingxue Hu ◽  
Zijing Li ◽  
Weicen Wang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Experimental Investigation ◽  
Porous Media ◽  
Solute Transport ◽  
Saturated Porous Media ◽  
X Ray ◽  
X Ray Computed

scholarly journals Hyperpolarised xenon MRI and time-resolved X-ray computed tomography studies of structure-transport relationships in hierarchical porous media

2021 ◽  
Vol 405 ◽  
pp. 126750
Author(s):  
Fraser Hill-Casey ◽  
Thomas Hotchkiss ◽  
Katharine A. Hardstone ◽  
Iain Hitchcock ◽  
Vladimir Novak ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Porous Media ◽  
Time Resolved ◽  
X Ray ◽  
Hierarchical Porous ◽  
X Ray Computed ◽  
Hierarchical Porous Media
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