Hydrophysics and Crosshole Packer Testing in Great Lakes region
A Great Lakes region project included Hydrophysical Logging (HpL), Wireline Straddle-Packer (WSP) testing, optical televiewer and Corehole Dynamic Flowmeter (CDFM) in angled and vertical coreholes up to 3,000 feet deep.
Tools were all run from a standard geophysical rig. Televiewer and flow-logging were performed to evaluate the vertical distribution of permeability in the coreholes and to provide depths of water-bearing fractures to target with the Wireline Straddle-Packer system for further permeability testing and groundwater sampling. Additionally, the project included complex Crosshole Packer Testing to verify the existence, or lack of, a preferential hydraulic fracture-network. Challenges included harsh conditions and temperatures dropping to -25 degrees F. Lasting approximately 3 months, the project covered two different sites and 12 total coreholes.
