A detailed study of barrier in Bentiu formation of Fula, Sudan has been worked. From the study, three types of barrier is identified in the braided river system, four rules of barrier correlation are proposed to better reflect real barrier distribution. Most of the barriers are controlled by 1–4 wells, showing uncontinuous distribution pattern caused by frequent channel migration and braided bar growth. The mostly continuous barriers are located between B1b and B1c, which is the main barrier for water coning in the study area. When comparing the production performance and barrier distribution, we can see that the area with relatively continuous barriers showing slow water cut rising, which is more effective to prevent water coning. The study offers a comprehensive case study that helps geologists and reservoir engineers for better understanding the barrier correlation, distribution and modelling. It can also help reservoir engineers to make production strategy more effectively considering the influence of barrier distribution on water coning.


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