... validated our computed water saturation with production history of these wells. The hydrocarbon fluids parameters, ie, salinity, density, HI and viscosity, are cross-checked with surface measurements on produced fluids. well logging water saturation surface measurement resistivity log analysis...

... acoustic signal fluid level operator determination drillstem testing optimization artificial lift system acquisition reflection drillstem/well testing liquid level instrument bottomhole pressure surface measurement anomaly gradient application frequency production control procedure...