BZ25-1S油田低产低效井分析及治理

Analysis and Treatment of Low Yield and Low Efficiency Wells in BZ25-1S Oilfield

在油田开发的过程中,受本身地质油藏条件,以及开发方式、工艺方法等因素的影响,部分生产井的产量呈逐渐下降趋势,含水逐步上升,油田低产低效生产井数逐年增加。对BZ25-1S油田低产低效井成因进行分析,探讨治理低产低效井的技术对策,并对低产低效井及与之相关的注水井采取了上返补孔、开关层、注水井酸化、调剖、转注等调整措施,油井产能得到有效释放,取得了较好的效果,为后期油田的低产低效井治理摸索出了一条行之有效的办法。

In the process of oilfield development,the production of some production wells is gradually declining due to the factors such as the conditions of its own geological reservoir,the way of development and the process and so on.The water cut is gradually rising,and the number of low production and inefficient production wells is increasing year by year.In this paper,the causes of low yield and low efficiency wells in BZ25-1 S oilfield are analyzed,and the technical countermeasures for low yield and low efficiency wells are discussed.The adjustment measures,such as back filling hole,switch layer,acidification of water injection well,profile control and injection,are adopted for low yield and low efficiency wells and related wells.The production of oil wells is effectively released and good results have been obtained.An effective method has been worked out for the low production and low efficiency wells in late oilfield.