Geophysical data from boreholes DM1, DM2, DM3, and DM3a, New Hydraulic Fracturing Facility, Oak Ridge National Laboratory, Oak Ridge, Tennessee
A comprehensive suite of geophysical logs was obtained from four deep monitoring boreholes at the New Hydrofracture Facility. The logging was an attempt to obtain stratigraphic, structural, and hydrologic information on the subsurface environment surrounding the hydrofracture facility. Logs obtained include caliper, gamma, neutron, density, single-point resistance, long- and short-normal resistivity, spontaneous potential, temperature, acoustic velocity, variable density, and borehole televiewer. Analysis and interpretation of the geophysical logs allowed the stratigraphic section at the facility to be determined and, by comparison with calibrated geophysical logs from borehole ORNL-Joy No. 2, allowed detailed inferences to be drawn about rock types and properties at the hydrofracture facility. Porosity values measured from the logs for Conasauga Group strata, as well as permeability values inferred from the logs, are low. Several intervals of apparently greater permeability, associated primarily with limestone-rich portions of the Maryville Limestone and sandstone-rich portions of the Rome Formation, were noted. Numerous fractures were identified by using several logs in combination. No one geophysical log was reliable for fracture identification although the acoustic-televiewer log appeared to have the greatest success. In addition to their characterization of subsurface conditions in the vicinity of the hydrofracture facility, the geophysical logs provided data on the extent of hydraulic fractures. Anomalies on single-point resistance logs that corresponded to prominent fractures identified on televiewer logs indicate intervals affected by hydraulic fractures associated with waste injection at the New Hydrofracture Facility. 14 refs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6430979
- Report Number(s):
- ORNL/TM-9681; ON: DE87011971
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted. Environmental Sciences Division Publication No. 2836
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
ORNL
GEOLOGY
HYDRAULIC FRACTURING
RADIOACTIVE WASTE DISPOSAL
BOREHOLES
CALIPER LOGGING
GAMMA LOGGING
GAMMA-GAMMA LOGGING
GEOPHYSICAL SURVEYS
HYDROLOGY
MAPS
MONITORING
NEUTRON LOGGING
PERMEABILITY
POROSITY
RESISTIVITY LOGGING
SP LOGGING
STRATIGRAPHY
TEMPERATURE LOGGING
TENNESSEE
WELL LOGGING
WELLS
CAVITIES
COMMINUTION
ELECTRIC LOGGING
FEDERAL REGION IV
FRACTURING
MANAGEMENT
NATIONAL ORGANIZATIONS
NORTH AMERICA
RADIOACTIVITY LOGGING
SURVEYS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
USA
WASTE DISPOSAL
WASTE MANAGEMENT
052002* - Nuclear Fuels- Waste Disposal & Storage
580203 - Geophysics- Geophysical Survey Methods- (1980-1989)