The cost of corrosion to the oil industry was estimated at more than 800 million dollars in 1983. At that time, oil companies were spending more than 50 million dollars per year on chemical inhibitors to control corrosion. Nearly all corrosion in gas wells occurs in the water condensation zone. A computer model, known as DOWN*HOLE, has been developed which can predict the location of the water condensation zone in gas condensate wells. This paper outlines the method used to predict the water-wet zone and discusses potential uses of the program.

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