Estimation of Fracture Porosity and Permeability Using Radon as a Tracer
- Key words
- Fracture porosity; Permeability; Radon; Strain; Earthquake
- Conference
- Stanford Geothermal Workshop
- Year
- 2019
- Session
- Tracers
- Language
- English
- Paper number
- Kuo3
Full text
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Abstract
A quantitative method using the precursory radon decline as a tracer to estimate fracture porosity and permeability is presented with the help of a case study. In an undrained fractured aquifer, the in-situ volatilization of dissolved radon could cause a decline of groundwater radon precursory to an earthquake. Based on the mechanisms of in-situ radon volatilization, mathematical models have been developed to correlate the radon decline with fracture porosity and permeability in the aquifer rocks.
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