Acoustic well logging method and apparatus
A method is described for determining the permeability of a subsurface geological formation traversed by a borehole, comprising the steps of: (a) passing a logging tool through the borehole, the logging tool including a rare earth acoustic transducer; (b) generating low frequency acoustic energy at a point in the borehole using the rare earth acoustic transducer; (c) receiving acoustic signals at a plurality of receiver stations spaced one from the other and from the rare earth acoustic transducer; (d)producing full waveforms of the received signals including shear waves and Stoneley waves for the point in the borehole; (e) measuring values of the attenuation of the Stoneley wave and values of the velocity of the shear wave for the point in the borehole; and (f) combining the measured values of the Stoneley wave attenuation and the shear wave velocity with other known measured values of borehole characteristics to obtain the permeability of the formation at the point in the borehole.
- Assignee:
- Schlumberger Technology Corp., Houston, TX
- Patent Number(s):
- US 4813028
- OSTI ID:
- 6148666
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
DESIGN
EQUIPMENT
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PROBES
RESERVOIR ROCK
RESOURCES
SONIC LOGGING
SONIC PROBES
SOUND WAVES
TRANSDUCERS
WELL LOGGING
WELL LOGGING EQUIPMENT
WELLS