In order to project the economic potential of a oil well, it is important to be able to forecast the production of the secondary phase, i.e. gas. This can be accomplished by forecasting gas oil ratio. Using production data from an oil producing horizontal well initially above the bubble point, I will demonstrate a simple methodology to forecast gas-oil ratio using straight lines. Further, I will show how to acquire other reservoir engineering parameters such as initial producing gas-oil ratio and cumulative production up to the bubble point used in determining drainage area of a well.

4:36 Theory
7:40 Steps For Forecasting Gas Oil Ratio (GOR)
9:29 Excel Analysis

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