The use of circumferentially propagated acoustic waves in well logging

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7160379

Guy, J O; Fertl, W H; Oliver, D W

An acoustic logging system which uses circumferentially propagated acoustic waves for measuring several parameters in a borehole has been designed and tested. The detection of one type of wave whose particle motion is perpendicular to the borehole wall is used to indicate the presence of vertical or near-vertically oriented fractures in fluid-filled boreholes. This paper reviews the basic theoretical concepts and instrumentation design of the Circumferential Acoustilog and presents laboratory data to illustrate the validity and applications of the measured parameters. Recent improvements over previous devices of this type are discussed. One of the improvements is the incorporation of a direct fluid wave baffle which extends the range of formation velocities that can be accurately measured, and also provides the means for identifying the guided fluid wave. A recent significant improvement to the system is the addition of an orientation section which assists in determining the direction of fracture systems. Field examples from the United States, Canada, and Europe demonstrate the application of the system in varying lithologies and borehole conditions.

• Research Organization: Dresser Atlas, Dresser Industries, Inc., Houston, TX
• OSTI ID: 7160379
• Report Number(s): CONF-861080-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
BENCH-SCALE EXPERIMENTS
BOREHOLES
CANADA
CAVITIES
DESIGN
DOCUMENT TYPES
EUROPE
FIELD TESTS
FLUID FLOW
FRACTURED RESERVOIRS
GEOLOGIC DEPOSITS
LITHOLOGY
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PARTICLES
PARTICULATES
PETROLEUM DEPOSITS
RESOURCES
REVIEWS
SONIC LOGGING
SOUND WAVES
TESTING
USA
VELOCITY
WELL LOGGING