Spacing between transmitter and receiver
Input(s)
\(s_{\text {off: }}\) Tool Standoff (in.)
\(C_{m f}\): Mud/Formaton Velocity Contrast (dimensionless)
Output(s)
\(\left(L_{s}\right)_{c}\): Transmitter-to-Receiver Spacing \((\mathrm{ft})\)
Formula(s)
\[
\left(L_{s}\right)_{c}=2 * s_{o f f} *\left(\frac{1+C_{m f}}{1-C_{m f}}\right)^{0.5}
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 10, Page: 192.