Abstract:
This paper discusses various aspects of technology relative to control the excess water production in oil fields. It covered the understanding of the water production mechanism which causes water production problems; and it focused on the way of diagnosing the problems of excess water production. The diagnostic plots derivative technique was discovered based on systematic numerical simulation studies especially on reservoir water coning and channeling. Concerning the application of the diagnostic plots the paper provided a simplified computation and quick technique for engineers, by using Microsoft Excel format on calculating and plotting the derivative response, considering two case examples of a Sudanese oil well's data, verification made by comparison result with standard diagnostic plot of Chan. This paper is an integrated technical guide for researchers, geologists and petroleum engineers especially the reservoir engineers on diagnosis of a high water cut problem, which has become a severe problem in the Sudanese oil fields.
