Hydraulic tests in hole UAe-6h, Amchitka Island, Alaska

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Abstract

Inflatable straddle packers were used to isolate and test 14 intervals ranging from 39 to 258 meters (127 to 846 feet) each in hole UAe-6h. Packer seats were poor in part of the hole because of unstable wall conditions. Thus, some zones had to be tested several times. The static water levels in the intervals tested ranged from about 23 meters (71 feet) below land surface in the upper interval to an estimated 90 meters (295 feet) below land surface in the lower intervals, indicating a decreasing head with depth. The specific capacity of the hole from 85. 0 to 2,133. 6 meters (279 to 7,000 feet) was 1.94 cubic meters per day per meter (0. 11 gallon per minute per foot) of drawdown after the hole had been jetted at an average rate of 327 cubic meters per day (60 gallons per minute) for about 23 hours . Transmissivity computed from the recovery of water level after jetting stopped was 0.60 cubic meter per day per meter (48.3 gallons per day per foot). The relative specific capacities of isolated intervals ranged from 0.004 cubic meter per day per meter (less than 0.001 gallon per minute per foot) of drawdown to 0.430 cubic meter per day per meter (0.024 gallon per minute per foot) of drawdown.

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Additional publication details

Publication type Report
Publication Subtype USGS Unnumbered Series
Title Hydraulic tests in hole UAe-6h, Amchitka Island, Alaska
DOI 10.3133/70156962
Year Published 1972
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description iii, 31 p.
Country United States
State Alaska
Other Geospatial Amchitka Island, Aleutian Islands
Online Only (Y/N) N
Additional Online Files (Y/N) N
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