===== Terms beginning with W =====

[[Wall sticking]]

[[Washout]]

[[Washover ]]

[[Wash over]]

[[Water analysis]]

[[Water base mud|Water-base mud]]

[[Water block]]

[[Water cone]]

[[Water cut]]

[[Watercutmeter]]

[[water drive|Water-drive]]

[[Watered out|Watered-out]]

[[Water encroachment]]

[[Water entry survey]]

[[Water flooding]]

[[Water loss ]]

[[Water saturation]]

[[Water table]]

[[Water wet ]]

[[Wavelength]]

[[Wavelet]]

[[Wave train]]

[[Wave train display]]

[[Wave train log]]

[[Weak point]]

[[Weight indicator]]

[[Well bore]]

[[Wellbore storage effect]]

[[Well completion]]

[[Wellhead]]

[[Well log]]

[[Well logging cable]]

[[Well seismic recording]]

[[Well spacing]]

[[Wettability ]]

[[Whipstock]]

[[Wiggle trace]]

[[Wildcat]]

[[Wild well]]

[[Winch ]]

[[Wireline log]]

[[Work over]]