Configuration Optimization Research on Tridimensional Injection-production Well Patterns of Buried Hill Reservoirs

Abstract

Abstract-Tridimensional injection-production well pattern has significant advantages on development of very thick buried hill reservoirs. But optimization is needed because the space configuration relation of buried hill reservoirs is very complicated. Reservoir numerical simulation techniques are applied in this study to research a buried hill reservoir. Injection-production well groups of vertical-horizontal wells and horizontal-horizontal wells are optimized respectively and comparative analyzed, based on the reliable reservoir numerical simulation model and considering about well types, well spatial positions and distance between the wells. The result shows that in tridimensional injection-production well patterns of vertical-horizontal wells, vertical injection well at bottom with an upper horizontal production well and vertical well at an angle of 45 degrees to end of horizontal well is the best configuration. And in that of horizontalhorizontal wells, the horizontal plane at an angle of 60 degrees to the plane that two horizontal wells in (an upper production well with a lower production well) is the best configuration, and this is more effective than that of verticalhorizontal wells. This study can provide support for the design of tridimensional injection-production well patterns of buried hill reservoirs.