Physical Simulation Experiment on Water Breakthrough and Control Along the Horizontal Well in Bottom Water Reservoir

Caofeidian oilfield group is a typical natural water drive reservoir in the Bohai Sea. At present, it has entered the middle and late stage of ultra-high water cut development. Large scale fluid extraction and infill adjustment are the main development means of the oilfield at present. However, due to the strong plane heterogeneity of the oilfield, with the large scale fluid extraction of the oilfield, it will be difficult to tap the potential of the remaining oil in the low permeability section and difficult to control water and stabilize oil production in the oilfield. It is urgent to explore the feasibility study of water control and plugging measures for development. Through three-dimensional large-scale horizontal well water breakthrough and water control experiments, simulate the physical simulation experiments of bottom water reservoirs under different permeability levels, permeability levels, and crude oil viscosity, as well as the physical simulation experiments of water breakthrough measures taken after water breakthrough in horizontal wells. Analyze the water body sweep law and remaining oil distribution law under different development stages and coupling effects of different main control factors, Summarize the water breakthrough patterns, water control and plugging effects, and production characteristics under different conditions. Guide the improvement of oilfield development effectiveness in the later stage of ultra-high water cut stage, and achieve efficient oilfield development.