Logging tool housing with acoustic delay

Details Logging tool housing with acoustic delay Logging tool housing with acoustic delay

1987-11-19

1989-07-25

Steinberger, Brian S.

Acoustics

Geophysical or subsurface exploration

Well logging

367 25, 181400, G01V 140

Patent

active

048504505

ABSTRACT:
A housing for an acoustic logging tool apparatus for use in a well bore is disclosed. The logging tool comprises an acoustic transmitter and one or more acoustic receivers located a fixed distance from the transmitter and an elongated tubular housing having a transmitter area, an intermediate area and a receiving area. The tubular housing has a plurality of interruptions or holes in the longitudinal continuity of its wall to delay the acoustic energy passing from the transmitter to the receiver along the housing. The receiving area of the housing further having means for reducing secondary acoustic noise produced by acoustic scattering between the intermediate area and the receiving area.

REFERENCES:
patent: 3191141 (1965-06-01), Schuster
patent: 3191142 (1965-06-01), Lebourg
patent: 3191143 (1965-06-01), Pardue
patent: 3191144 (1965-06-01), Pardue
patent: 4020452 (1977-04-01), Trouiller et al.

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