Ultrasonic imaging in wells or tubulars

Details Ultrasonic imaging in wells or tubulars Ultrasonic imaging in wells or tubulars

2006-07-14

2010-02-02

Hughes, Scott A (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

C367S031000, C367S032000, C181S105000

Reexamination Certificate

active

07656747

ABSTRACT:
An ultrasonic imaging method is provided. A wideband acoustic pulse is fired at a wall. A wideband response signal is received. The wideband response signal is processed to select an impedance measurement frequency. A wavelet having a characteristic frequency approximately equal to the impedance measurement frequency is fired. A wavelet response signal is received. A reflection coefficient is determined from the wavelet response signal. An impedance measurement is calculated from the reflection coefficient. Related tools and systems are also disclosed.

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