Deployment | Borehole |
---|---|
Log Name | CAP |
Measured Property | Fluid capacitance |
Sensor Type | Capacitor |
Units | |
SI | dimensionless |
Oil Metric | dimensionless |
Oil Field | dimensionless |
Applications
- Assesing donwhole flowrate
Sample Logs
Tool Schematic
Mathematical Model
CAP = \frac{CAP_w s_w + CAP_o s_o + CAP_g s_g}{CAP_{w0}} |
where
\{ s_w, \ s_o, \ s_g \} – volumetric fractions of water, oil and gas phase ( s_w + s_o + s_g = 1),
\{ CAP_w , \ CAP_o , \ CAP_g \} – are reference values for capacitance of water, oil and gas at given temperature and pressure,
CAP_{w0} fresh water capacitance at NTP.