关键词: 水平井, 薄层, 开发效果, 发展趋势, 大庆油田

Abstract: This paper presents a fact that theproduction toward a horizontal well flood approachesto a linear flow in thin reservoirs. Significant increases in flow rate and in areal sweep effi-ciency with horizontal wells are obtained.The oil production of a horizontal well of DQ YLoil field is equal to that from 2～5.5 vertical welis.A further utilization of horizontal wells is to improve oil recoveries with an improvementin drilling technology and reduce well costs is suggested.Using a combination of a horizontalwell and vertical wells can improve oil recoveries in a strongly stratified reservoir.

Key words: horizontal well, thin reservoir, development effect, developrnent trend, Daqing oilfield