Influence of Formation Quality at the Top Part of Fluvial-Facies Reservoirs on Horizontal Well Deployment

Fluvial-facies reservoirs in Bohai Oilfield are widely distributed, and the proportion of positive rhythm reservoirs with strong reservoir heterogeneity is high. To address the problems of poor quality at the top of the positive rhythm formation and low recovery rate due to water flooding at the bottom, this paper uses numerical simulation to establish a mechanistic model to compare different schemes of horizontal well deployment in a single layer of positive rhythm reservoir. Also it compares the advantages and disadvantages of different deployment schemes, optimizes the deployment limits of horizontal wells in positive rhythm sandstone reservoirs, and verifies the results using the existing field horizontal wells. The optimal longitudinal deployment location of horizontal wells during the high water cut development stage of the fluvial-facies reservoir is obtained.