During the past 10 years the digital computer has been used to assist in many of the discrete functions of petroleum exploration. However, the total petroleum exploration process requires that many discrete activities be carried out in varied and complex combinations to achieve the goal of anomaly isolation and evaluation. This process can be enhanced by a geologist operating interactively with a computer to select and control the sequence of functions. Communication between man and machine can be carried out by means of a cathode ray tube display.

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