| Main Title |
Evaluation of Methods for Determining the Vertical Distribution of Hydraulic Conductivity. |
| Author |
Taylor, K. ;
Wheatcraft, S. ;
Hess, J. ;
Hayworth, J. ;
Molz, F. ;
|
| CORP Author |
Nevada Univ. System, Reno. Desert Research Inst. ;Auburn Univ., AL.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Publisher |
c1990 |
| Year Published |
1990 |
| Report Number |
EPA-R-812713; EPA/600/J-90/298; |
| Stock Number |
PB91-146522 |
| Additional Subjects |
Boreholes ;
Hydraulic conductivity ;
Ground water ;
Contamination ;
Formation tests ;
Reservoir engineering ;
Electrical conductivity ;
Well logging ;
Well tests ;
Electrical prospecting ;
Fluid flow ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-146522 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
14p |
| Abstract |
Six borehole methods for determining the vertical distribution of hydraulic conductivity in unconsolidated geologic formations are evaluated. Staddle packer tests are inappropriate if there is a hydraulic path around the packer on the outside of the well screen. Methods based on grainsize analysis fail to incorporate the influence of small-scale structure and packing. Methods based on relationships between electrical and hydraulic conductivity require special conditions and are site- and formation-specific. Borehole effects invalidate methods based on the natural flow of fluid through a well bore. Stoneley wave attenuation methods are not effective in unconsolidated formations. A single-well electrical tracer test is effective, but requires the injection of significant volumes of fluid. |
| Supplementary Notes |
Pub. in Groundwater, v28 n1 Jan/Feb 90. Prepared in cooperation with Auburn Univ., AL. Sponsored by Environmental Monitoring Systems Lab., Las Vegas, NV. |
| NTIS Title Notes |
Journal article Jan-Feb 90. |
| Title Annotations |
Reprint: Evaluation of Methods for Determining the Vertical Distribution of Hydraulic Conductivity. |
| Category Codes |
48G; 68D |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/07 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
109130743 |
| Origin |
NTIS |
| Type |
CAT |
