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Inverse modeling of a multistep outflow experiment fordetermining hysteretic hydraulic properties

Conference ·
OSTI ID:6406

A new, closed-form hysteretic model of the capillary pressure-saturation and relative permeability-saturation relationship has been implemented into ITOUGH2. The hysteretic capillary pressure function is based on the van Genuchten model, with a modified version of the dependent domain model of Mualem to describe the scanning curves. Hysteresis in the relative permeability relations is considered to be mainly a result of nonwetting fluid entrap- ment. The hysteresis model was used in combination with inverse modeling techniques to examine the potential of a simple drainage- imbibition experiment to determine hysteretic hydraulic properties.

Research Organization:
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6406
Report Number(s):
LBNL--41749; ON: DE00006406
Country of Publication:
United States
Language:
English

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