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RL3-1-SS31;
Tech ID: 3047
Project Overview
Deployment of Through Casing Resistivity Technology (TCRT) is based
on the assumption that surrogate information, namely electrical
resistivity, can be used to determine the distribution of water
and contaminants in the subsurface. TCRT has been demonstrated primarily
in the petroleum industry for detecting oil or gas in bypassed formation
using the existing well infrastructure. In Hanford tank farms, steel
cased wells limit the use of most electrical methods for subsurface
characterization. TCRT has the potential to overcome these limitations.
The technique uses existing steel cased wells as electrodes in one
technique and in another as access tubes for a through casing resistivity
tool. Using new high-speed inversion algorithms, TCRT promises to
yield an important technique for high-resolution vadose zone characterization,
using existing steel cased boreholes, at scales relevant to remediation
and risk assessment.
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