The low-frequency tube wave speed is given explicitly for a variety of borehole environments. The presence of a logging tool, the effects of casing, and bore eccentricity are considered. The results are all relatively simple and indicate that the speed decreases in the presence of a tool or borehole eccentricity. The speed increases in the presence of casing as long as the casing shear modulus exceeds that of the formation.
All Science Journal Classification (ASJC) codes
- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics