Acoustic well logging method and apparatus

Patent · Tue Mar 14 00:00:00 EST 1989

OSTI ID:6148666

Liu, O Y

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
• Resource Relation: Patent File Date: Filed date 7 Jul 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
RESERVOIR ROCK
SONIC LOGGING
WELL LOGGING EQUIPMENT
DESIGN
EXPLORATORY WELLS
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
SONIC PROBES
SOUND WAVES
TRANSDUCERS
EQUIPMENT
GEOLOGIC DEPOSITS
MINERAL RESOURCES
PROBES
RESOURCES
WELL LOGGING
WELLS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration