Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1989-03-31
1990-03-06
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
181105, 367 31, G01V 140
Patent
active
049072048
ABSTRACT:
An acoustic borehole logging tool traverses a fluid-filled cased well with an acoustic energy transmitter. Pressure waves created in the well fluid by the transmitter generate tube waves in the well casing. A closely spaced receiver detects tube waves that have traveled along the cased wellbore and been reflected by fracture interfaces. These reflected tube waves are recorded and used to identify the top and bottom of any fracture interval in the formation behind the well casing.
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"The Correlation of Tube Wave Events with Open Fractures in Fluid-Filled Boreholes", C. F. Huang and J. A. Hunter, Current Research, Part A, Geological Survey of Canada, Paper 81-1A, pp. 361-376, 1981.
Hager Jr. George W.
Lobo Ian J.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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