Proration of an Oil Field Based on Uniform Allowable Gas Production

The ideas set forth in this paper are proposed for consideration anddiscussion as the result of recent study of various plans for control andproration of gas and oil production from Kettleman North Dome oil field. Theywould be applicable to any oil field during its flush production stage. Theproblems of development and proration are so intimately connected in Kettlemanhills and in many other flush fields that they have both been covered in thispaper. Many are of the opinion that Kettleman North Dome oil field should beconsidered as containing only one zone to its present total penetratedthickness of nearly 1500 ft., and that the hydrocarbon content of this zonegradually changes from dark and relatively low-gravity oil with relatively lowgas-oil ratios on the flanks and plunges to mostly light-colored andhigh-gravity oil with high gas-oil ratios in the higher structural positions, somewhat according to the idealized section shown in Fig. 1. At least the lower400 ft. contains dark oil in the higher structural positions.