Information extraction from noisy televiewer logs of inclined holes in hard rock

Conference · Mon Dec 31 23:00:00 EST 1984

OSTI ID:5573316

Burns, K L

A feature-extraction method was adapted from satellite image-processing to the problem of extracting information from extremely noisy and narrow-range televiewer imagery from GT-2 at Fenton Hill. From televiewer logs, 733 structures were recovered, compared with 42 from core. The average spacings were 3.13 and 0.55 feet, respectively, indicating that the televiewer yielded only 17.5% of the information available from core. Two televiewer runs overlapped between 4000 and 4275 feet depth, but no detectable structures were repeated on both runs. The lack of repetition was explained as due to random processes arising from thermally-induced electronic noise and manually-operated narrow-range recording. Two new coefficients of association were defined, termed ''coplanarity'' P, and ''collinearity'', L, respectively. The coplanarity of foliations demonstrated that, despite no repetition of individuals, the two runs could be correlated. The coplanarity averaged 60 degrees, falling to 43.5 degrees at match, at a lag of -4.5 feet. There was no systematic maximum in the coplanarity for fractures, indicating that these were not serially-correlated. A periodicity in the collinearity for foliations indicated a set of folds with wavelength of 80 feet. 8 refs., 10 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5573316
• Report Number(s): LA-UR-85-1009; CONF-850801-17; ON: DE85009644
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
DATA
ENERGY SYSTEMS
EQUIPMENT
EXPERIMENTAL DATA
FEDERAL REGION VI
GEOTHERMAL SYSTEMS
GEOTHERMAL WELLS
Geothermal Legacy
HOT-DRY-ROCK SYSTEMS
IMAGE PROCESSING
INFORMATION
NEW MEXICO
NORTH AMERICA
NUMERICAL DATA
PROCESSING
REMOTE VIEWING EQUIPMENT
TELEVISION
USA
WELL LOGGING
WELLS