Method for sonic indication of voids in casing cement

Details Method for sonic indication of voids in casing cement Method for sonic indication of voids in casing cement

2007-12-27

2009-12-29

Keith, Jack W. (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

C181S105000

Reexamination Certificate

active

07639563

ABSTRACT:
A method for determining on a real time logging while drilling (LWD) basis the top of cement location between casing transition zones in a borehole using at least one sonic attributes of coherent energy, attenuation and slowness as a function of at least one of depth and time.

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