CHP (psi) : Casing Head Pressure
THP/ WHFP (psi) : Tubing Head Pressure / Well Head Pressure
THT/ WHFT (°C) : Tubing Head Temperature / Well Head Temperature
IPR (Scfd /psi) : Inflow Performance Relationship
PI (blpd/psi) : Productivity Index
BHFP (psi) : Bottom Hole Flowing Pressure
SP (psi) : Static Pressure i.e. in the reservoir