Maarten de Hoop
Director, GMIG
mdehoop@purdue.edu
Dept of Mathematics
Purdue University
150 N Univ St
West Lafayette, IN 47907
ph. (765) 496-7678
Fax (765) 496-1169
Digital & Experimental Rock Physics
In the category "Digital multi-scale and experimental rock
physics" we are concerned with developing an integrated mathematical
and computational framework and carrying out comparitive experiments
to explore and study the (scaling) behavior of the hydraulic and
seismic properties of (intersecting) fractures under reservoir
conditions. The goal of the program is developing a platform
encompassing the pore/fracture (faults) to seismic scales.
The scaling behavior of the hydraulic and seismic properties of a fracture determines how properties observed on the laboratory size (typically less than tens of cm) relate to the same properties measured at larger sizes. In describing the scaling behavior of fracture properties, the length scales of the fracture geometry (apertures, contact areas, spatial correlations), and fluid phase distribution (wetting and non-wetting phase areas, interfacial areas) must be characterized and compared to the length scales associated with the seismic probe (wavelength, beam size, divergence angle, field-of-view). Indeed, defining the role/effect of various length scales on interpreting fracture properties is central to these research efforts. Results of our research program include:
a computational analysis of the geometric scales that are critical
for defining the flow - stiffness relationship for fractures
an experimental study of the fluid flow - fracture specific
relationship for fractures subjected mixed-mode loading
an experimental and analytical study of the effect of films on the
capillary pressure and saturation relationship for immiscible fluid
phases in porous media
an experimental and theoretical study of competing seismic
attenuation mechanisms in fractured transversely isotropic rock.
The scaling behavior of the hydraulic and seismic properties of a fracture determines how properties observed on the laboratory size (typically less than tens of cm) relate to the same properties measured at larger sizes. In describing the scaling behavior of fracture properties, the length scales of the fracture geometry (apertures, contact areas, spatial correlations), and fluid phase distribution (wetting and non-wetting phase areas, interfacial areas) must be characterized and compared to the length scales associated with the seismic probe (wavelength, beam size, divergence angle, field-of-view). Indeed, defining the role/effect of various length scales on interpreting fracture properties is central to these research efforts. Results of our research program include:
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