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Title: Completion Report for Well ER-EC-1

Abstract

Well ER-EC-1 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 U.S. Department of Energy's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Test Site. A 44.5-centimeter surface hole was drilled and cased off to the depth 675.1 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 566.3 meters prior to installation of the completion string. One completion string with three 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 31 sidewall samples taken at various depths below 680 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,more » the Calico Hills Formation, the Crater Flat Group, and the Volcanics of Quartz Mountain. The preliminary geologic interpretation of data from Well ER-EC-1 indicates the presence of a structural trough or bench filled with a thick section of post-Rainier Mesa lava. These data also suggest that this site is located on a buried structural ridge that may separate 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:
775387
Report Number(s):
DOE/NV/11718-381
TRN: US0101205
DOE Contract Number:  
AC08-96NV11718
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Dec 2000
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; WELL DRILLING; REMEDIAL ACTION; NEVADA TEST SITE; QUARTZ; TUFF; WELL COMPLETION; STRATIGRAPHY; HYDROLOGY; SITE CHARACTERIZATION; UGTA; PAHUTE MESA; OASIS VALLEY; TIMBER MONTAIN CALDERA COMPLEX; ASH-FLOW TUFF

Citation Formats

Townsend, M J. Completion Report for Well ER-EC-1. United States: N. p., 2000. Web. doi:10.2172/775387.
Townsend, M J. Completion Report for Well ER-EC-1. United States. https://doi.org/10.2172/775387
Townsend, M J. 2000. "Completion Report for Well ER-EC-1". United States. https://doi.org/10.2172/775387. https://www.osti.gov/servlets/purl/775387.
@article{osti_775387,
title = {Completion Report for Well ER-EC-1},
author = {Townsend, M J},
abstractNote = {Well ER-EC-1 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 U.S. Department of Energy's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Test Site. A 44.5-centimeter surface hole was drilled and cased off to the depth 675.1 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 566.3 meters prior to installation of the completion string. One completion string with three 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 31 sidewall samples taken at various depths below 680 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, the Crater Flat Group, and the Volcanics of Quartz Mountain. The preliminary geologic interpretation of data from Well ER-EC-1 indicates the presence of a structural trough or bench filled with a thick section of post-Rainier Mesa lava. These data also suggest that this site is located on a buried structural ridge that may separate the Silent Canyon and Timber Mountain caldera complexes.},
doi = {10.2172/775387},
url = {https://www.osti.gov/biblio/775387}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 2000},
month = {Fri Dec 01 00:00:00 EST 2000}
}