Method for determining formation permeability by comparing measured tube waves with formation and borehole parameters

Patent · Tue Jan 10 00:00:00 EST 1989

OSTI ID:6174827

Hornby, B E

A method is described for determining the permeability of an earth formation traversed by a borehole, using a tool adapted for movement in the borehole, comprising: transmitting acoustic energy from a first location on the tool; measuring the acoustic wave forms of the transmitted energy at varying distances from the first location; filtering each of the wave forms to obtain a tube wave component; determining a measured slowness parameter of the tube wave component; generating a value of the computed slowness parameter for the borehole under the conditions of an elastic nonpermeable medium; determining the difference between the measured slowness parameter and the computed value; determining the permeability of the formation in response to the difference between the measured slowness parameter and the computed value.

• Assignee: Schlumberger Technology Corp., New York, NY
• Patent Number(s): US 4797859
• OSTI ID: 6174827
• Resource Relation: Patent File Date: Filed date 8 Jun 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
RESERVOIR ROCK
SEISMIC SURVEYS
SEISMIC SOURCES
EXPLORATION
GEOPHYSICS
NATURAL GAS DEPOSITS
PERMEABILITY
PETROLEUM DEPOSITS
SEISMIC WAVES
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
RESOURCES
SURVEYS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration