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Title: Completion report for Well ER-EC-6

Abstract

Well ER-EC-6 was drilled for the U.S. Department of Energy, Nevada Operations Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the spring of 1999 as part of the DOE's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 66-centimeter surface hole was drilled and cased off to the depth of 485.1 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,524.0 meters. A preliminary composite, static, water level was measured at the depth of approximately 434.6 meters prior to installation of the completion string. One completion string with four isolated, slotted intervals was installed in the well. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters and 33 sidewall samples taken at various depths below 504.4 meters, supplemented by geophysical log data. Detailed chemical and mineralogical studies of rock samples are in progress. The well penetrated Tertiary-age lava and tuff of the Timber Mountain Group, the Paintbrush Group, themore » Calico Hills Formation, and the Volcanics of Quartz Mountain. Intense hydrothermal alteration was observed below the depth of 640 m. The preliminary geologic interpretation indicates that this site may be located on a buried structural ridge that separates the Silent Canyon and Timber Mountain caldera complexes.« less

Authors:
Publication Date:
Research Org.:
Bechtel Nevada Corp. (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
758400
Report Number(s):
DOE/NV/11718-360
TRN: US0003832
DOE Contract Number:  
AC08-96NV11718
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 May 2000
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; NEVADA TEST SITE; REMEDIAL ACTION; WELLS; HYDROLOGY; LITHOLOGY; STRATIGRAPHY; DRILLING; UGTA; PAHUTE MESA; OASIS VALLEY; TIMBER MOUNTAIN; CALDERA COMPLEX; RAINER MESA; VOLCANIC FIELD

Citation Formats

M. J. Townsend. Completion report for Well ER-EC-6. United States: N. p., 2000. Web. doi:10.2172/758400.
M. J. Townsend. Completion report for Well ER-EC-6. United States. doi:10.2172/758400.
M. J. Townsend. Mon . "Completion report for Well ER-EC-6". United States. doi:10.2172/758400. https://www.osti.gov/servlets/purl/758400.
@article{osti_758400,
title = {Completion report for Well ER-EC-6},
author = {M. J. Townsend},
abstractNote = {Well ER-EC-6 was drilled for the U.S. Department of Energy, Nevada Operations Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the spring of 1999 as part of the DOE's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 66-centimeter surface hole was drilled and cased off to the depth of 485.1 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,524.0 meters. A preliminary composite, static, water level was measured at the depth of approximately 434.6 meters prior to installation of the completion string. One completion string with four isolated, slotted intervals was installed in the well. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters and 33 sidewall samples taken at various depths below 504.4 meters, supplemented by geophysical log data. Detailed chemical and mineralogical studies of rock samples are in progress. The well penetrated Tertiary-age lava and tuff of the Timber Mountain Group, the Paintbrush Group, the Calico Hills Formation, and the Volcanics of Quartz Mountain. Intense hydrothermal alteration was observed below the depth of 640 m. The preliminary geologic interpretation indicates that this site may be located on a buried structural ridge that separates the Silent Canyon and Timber Mountain caldera complexes.},
doi = {10.2172/758400},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}