Acoustic televiewer log images of natural fractures and bedding planes in the Toa Baja borehole, Puerto Rico

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/91GL00407· OSTI ID:5511617

Paillet, F L; Goldberg, D ^[1]

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1. Columbia Univ., Palisades, NY (United States)

Although borehole conditions made acoustic televiewer logging difficult in the Toa Baja borehole, more than 180 meters of continuous, acceptable quality televiewer logs were obtained in the intervals from 730 to 880 meters and from 2,515 to 2,675 meters in depth, indicating the presence of fractures in these intervals are either nearly parallel to directions given by the dipmeter log and may represent solution openings or minor washouts along bedding planes, or dip steeply to the south or southwest across bedding. The televiewer log confirms the presence of an apparently open set of fractures near 867 meters in depth, where circulation was lost during drilling, and in the interval from 2,600 to 2,650 meters in depth, where the temperature log indicates anomalous heat flow in the surrounding formation.

• OSTI ID: 5511617
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Vol. 18:3; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
02 PETROLEUM
GEOLOGIC FORMATIONS
SONIC LOGGING
PETROLEUM DEPOSITS
PUERTO RICO
BORESCOPES
DEPTH
DETECTION
DIPMETER LOGGING
GEOLOGIC FRACTURES
GEOLOGIC STRATA
HEAT FLOW
LOST CIRCULATION
TEMPERATURE LOGGING
WELL DRILLING
DEVELOPED COUNTRIES
DIMENSIONS
DRILLING
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GREATER ANTILLES
ISLANDS
LATIN AMERICA
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
USA
WELL LOGGING
WEST INDIES
580000* - Geosciences
020200 - Petroleum- Reserves
Geology
& Exploration