- Water (chemical substance)
- Water (fluid phase)
- Water density = ρW
- Water Injector (well) = WI
- Water→Oil Displacement Efficiency = EDow
- Water Pipe Flow @model
- Water Producer (well) = WP
- Well completion
- Well & Reservoir Surveillance
- Well Drilling (Petroleum)
- Well flow status
- Wellhead
- Well logging
- Well schematic
- Well Testing = WT
- Wireline Formation Testing (WFT)
- Wireline logging
- Well & Reservoir Management = WRM
- Well Intervention
- Workover = WO
- Pressure Diffusion Wellbore Storage @model
- Well-Reservoir Contact = WRC
- Pressure Diffusion Well-Reservoir Contact @ model
- Wet Gas (chemical substance)
- Well Flow Performance = WFP
- Weighted Average Cost of Capital = WACC
- Well logs
- Water (fluid pseudo-component)
- WFL – Water Flow Logging
- Well Integrity Logging = WIL
- Wellbore tractor
- Wellbore Storage = WBS
- Wellbore Flow Model = WFM
- Water Supply System (WSS)
- Water formation volume factor = Bw
- Well & Log Analysis
- Waxman-Smits-Thomas Model (WST ) @model
- Wildcat Exploration Drilling
- Water production rate
- Water injection rate = qWI
- Wettability
- Well Integrity Tracers
- Waterflood Recovery = WF
- Water-Oil Ratio = WOR
- Water Sandface Productivity Index
- Water Surface Productivity Index
- Water phase pressure = pw
- Water Mobility
- Water surface flowrate = qW
- Water sandface flowrate = qw
- Water viscosity
- Water compressibility = cw
- Watercut Fractional Flow @model
- Workover Engineering
- Well Integrity
- Waterflooding
- WAG flooding
- Water permeability
- Water relative permeability
- Water-oil relative permeability (krwo)
- Wetting phase
- Wellbore radius (rw)
- Water-Oil Corey curvature (nwo)
- Wellbore pressure
- Water triple point
- WOR Sweep Diagnostic
- WOR Drawdown Diagnostic
- Well radius (rw)
- Water Influx Constant = B
- Water Drive
- Wellbore Temperature Profile @model
- Well stimulation
- Well Control (Reservoir Flow Modeling)
- Water shut-off (WSO)
- Wireline Operations
- Wireline Unit (WLU)
- Wireline
- Wiggins IPR @ model
- Wellhead Choke
- Wellhead Choke @ model
- Water Injection Lift @ model
- Well Control
- Working Capital = WC (Finance)
- Watercut Diagnostics
- Water-Oil Ratio Derivative (WOR')
- Water reserves
- Water In Place
- Waterflood Diagnostics
- WRC Diagnostics
- Water Cut-off = Ywc
- WOR Cut-off = WORc
- Well-Reservoir System = WRS
- Wellbore
- Water Injection Wellbore Profile @model
- Water Injection Wellbore Temperature Profile @model
- Water Injection Wellbore Pressure Profile @model
- Wellbore Production Multiphase Slippage Flow @model
- Wellbore Injection Homogeneous Flow @model
- Well locations map
- Well Intervention History
- Wellbore Production Homogeneous Flow @model
- Watercut Correlation @model
- Waterflood Recovery Quality
- WFP – Water Injector
- WRM Activity
- PVT Water correlations
- Water viscosity correlations = μw
- Water FVF correlations = Bw
- Water compressibility correlations = Bw
- Water density correlations = ρw
- Wet Gas Reservoir
- Weight percent = wt%
- Well Location and Flow Rate Map
- Water depletion
- Well Performance Complications
- Well conversion
- Watercut Fractional Flow plot
- WOR Diagnostics
- Weighted average
- WOR vs Recovery plot
- Water Column Thickness
- WOIL plot
- Watercut WΣW plot
- Watercut YΣY plot
- Water-Oil Rate Plot = qOW
- Watercut WΣW History Matching @model
- Water Replenishment = WR
- Water Oil Balance Ratio = WOBR
- WOR vs NWR @model
- WOR vs WOBR @model