八面河油田开窗侧钻井挖潜技术应用——以面一区为例

Application of Sidetracking Technique through Milling Window in Casing to Jianghan Oilfield

八面河油田面一区经过20多年的开发,已经进入高含水期,由于储层非均质性严重,层间动用差异大,开发效果逐年变差,用常规方法进一步提高采收率难度较大,而利用开窗侧钻技术开发物性相对较差的高饱和度油层和零散剩余油取得比较好的开发效果,取得了良好的增油效果及经济效益。

Mian--1 Block with a development history of more than 20 years in Bamianhe Oilfield has gone into high water cut stage. Because of serious reservoir heterogeneity and big difference of producing reserves between oil layers, the development effect of this block has become poor year by year, thus further enhancing oil recovery by using conventional methods to tap the potential in mature oil area is relatively difficult, the preferable development effect of the oil layers with high oil saturation and poorer physical property can be obtained by using sidetracking technique through cutting window on casing, showing good incremental oil production effect and economic benefit.