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Hydropulse Tomography for Identifying 3-D Permeability Distribution

by Hiroyuki Tosaka, Univ of Tokyo, Tokyo, Japan,
Kiyoshi Masumoto, Univ of Tokyo, Tokyo, Japan,
Keiji Kojima, Univ of Tokyo, Tokyo, Japan,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993

Abstract:

For the purpose of identifying subsurface permeability distribution, a geotomographic method named Hydropulse Tomography (HT) was developed. As observation data, HT uses hydraulic pressure responses received at multiple points in a highly transient, multi-well interference testing. Reconstruction of permeability distribution is done by the numerical inversion program which was developed by us to treat nonlinear minimization process of a large and time-dependent system. Case studies for validation of inversion program were successfully conducted by using numerically simulated pressure data for 2-D and 3-D fracture problems.

Subject Headings: Radiography | Numerical models | Numerical analysis | Hydraulic pressure | Validation | Transient response | Subsurface investigation

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