Calculate water cut percentage, net oil production, and BSW from total fluid and water volumes
Total gross liquid production rate including both oil and water phases, measured at the separator or test facility.
bbl/day
Volume of produced water measured at surface conditions. Includes both formation water and any injected water breakthrough.
bbl/day
Basic Sediment and Water percentage from centrifuge test per ASTM D4007. If provided, this is used for net oil correction.
%
Formation volume factor for oil. Accounts for volume change from reservoir to stock tank conditions. Typical range 1.05-1.80. Enter 1.0 if already at stock tank conditions.
rb/stb
Results
Water Cut-%
Gross Oil Rate (Surface)-bbl/day
Net Oil Rate (BSW Corrected)-bbl/day
Stock Tank Oil Rate-STB/day
Water-Oil Ratio (WOR)-bbl/bbl
References & Formulas:
Water Cut (%) = (Water Rate / Total Fluid Rate) × 100
Gross Oil = Total Fluid − Water Rate
Net Oil = Gross Oil × (1 − BSW/100)
Stock Tank Oil = Net Oil / Bo
WOR = Water Rate / Gross Oil
Based on API MPMS Chapter 20 and standard production accounting methods.