Circumferential acoustic logging

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Energy Sources (N.Y.); (United States)

DOI:https://doi.org/10.1080/00908318808908915· OSTI ID:6835194

McDougall, J; Fertl, W H; Chilingarian, G V; Yen, T F

A circumferential acoustic logging instrument that operates at a radial mode resonance of 120 kHz utilizes opposing pairs of acoustic transmitters and receivers mounted on pad assemblies, which are pressed against the borehole wall. An important feature of the instrument is a baffle system which effectively minimizes the propagation and reception of the direct fluid wave. The incorporation of the baffle allows both types of boundary waves, the Rayleigh and the guided fluid wave, to be more easily recognized. At present, the primary application of the Circumferential Acoustilog is in locating natural fracture systems. When run with an orientation section, the instrument is also capable of determining fracture direction. Several field examples are presented here which demonstrate the capabilities and effectiveness of circumferential acoustic logs.

• Research Organization: Atlas Oilfield Service Group, Dresser Industries, Inc., Houston, TX (US)
• OSTI ID: 6835194
• Journal Information: Energy Sources (N.Y.); (United States), Journal Name: Energy Sources (N.Y.); (United States) Vol. 10:1; ISSN EGYSA
• 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
BAFFLES
BOREHOLES
CAVITIES
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
EXPLORATION
FLOW REGULATORS
FRACTURED RESERVOIRS
FREQUENCY RANGE
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOPHYSICS
KHZ RANGE
KHZ RANGE 100-1000
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PROBES
RESOURCES
SONIC LOGGING
SONIC PROBES
WELL LOGGING
WELL LOGGING EQUIPMENT