• Geography
  • Published 2005

Transient changes in fracture aperture during hydraulic well tests in fractured gneiss

@inproceedings{Schweisinger2005TransientCI,
  title={Transient changes in fracture aperture during hydraulic well tests in fractured gneiss},
  author={Todd Schweisinger and Erik Svenson and Lawrence C. Murdoch},
  year={2005}
}
The influence of deformable fractures on aquifer tests is studied by the development of a technique to measure and analyze in-situ changes in fracture aperture. A high-resolution borehole extensometer is used to measure the axial displacement of a borehole during packed-off hydraulic well tests in fractured rock. The extensometer yields repeatable displacements ranging from less than 0.5 microns/(meter of head) to 5 microns/meter depending on the testing location. The field measurements are… CONTINUE READING