A Physically Based Approach for Estimating Hydraulic Conductivity from HPT Pressure and Flowrate |
| |
| Authors: | Robert C. Borden Ki Young Cha Gaisheng Liu |
| |
| Affiliation: | 1. North Carolina State University, Campus Box 7908, Raleigh, NC, 27695 USA;2. Draper Aden Associates, 114 Edinburgh S Dr #200, Cary, NC, 27511 USA;3. Kansas Geological Survey, University of Kansas, 1930 Constant Ave, Lawrence, KS, 66047 USA |
| |
| Abstract: | The hydraulic profiling tool (HPT) is widely used to generate profiles of relative permeability vs. depth. In this work, prior numerical modeling results are used to develop a relationship between probe advance rate V (cm/s), probe diameter D (cm), water injection rate Q (mL/min), corrected pressure Pc (psi), and hydraulic conductivity K (feet/d) ![urn:x-wiley:0017467X:media:gwat13039:gwat13039-math-0001]() ((1)) where E is an empirically derived hydraulic efficiency factor. The relationship is validated by 23 HPT profiles that, after averaging K vertically, were similar to slug test results in adjoining monitoring wells. The best fit value of E for these profiles was 2.02. This equation provides a physically based approach for generating hydraulic conductivity profiles with HPT tooling. |
| |
| Keywords: | |
|
|
