萨中开发区采油六矿地区的水驱开发现已进入特高含水阶段,近几年来由于油层污染、砂体发育及层间、层内矛盾等各种因素的影响水驱欠注井逐渐增多,常规治理欠注井的措施多为压裂、酸化、调剖等,但由于措施费用较昂贵,因此寻找更加经济有效的措施是当务之急。近期采油六矿利用钻降开井时机,采用分层开井治理欠注井,对欠注井实施了有选择的分层恢复注水方案,通过控制高渗透层吸水,先开低渗透层,利用开关井的压差来缓解了层间矛盾,最终达到治理欠注状况的目的,在一定范围的实施后发现效果较好,但分层开井技术有局限性,目前仅局限实施于钻降开井时期,因此本文探讨分层开井在长关井和正常生产井中与周期注水和测调、细分等其它技术相结合的可行性,以求同样达到低成本高效益治理欠注井的目的! The development of waterflooding in the No.6 mine of Sazhong Development Zone has now entered the stage of ultra-high water-cut. In recent years, due to the influence of various factors such as reservoir pollution, sand body development, and inter-layer and intra-layer conflicts, However, conventional measures to underfill wells are mainly fracturing, acidizing and profile control. However, since measures are more expensive, it is imperative to find more cost-effective measures. In the recent exploit of No.6 mine, the timing of well drilling was reduced. By stratified well drilling to manage the underfilling well, a selective stratified recovery waterflooding scheme was implemented for the underfilling well. By controlling the water absorption in the high permeable layer, the low permeable layer was opened first, Switch well pressure to ease the contradiction between layers, and ultimately to achieve the purpose of governance under-injection status, after a certain range of implementation found to be better, but there are limitations stratified hole technology, is currently limited to drill down Therefore, this paper explores the feasibility of stratified open-hole in long-shut-in well and normal production well combined with other technologies such as periodic water injection and measurement, subdivision and so on, in order to achieve the same goal of low-cost and high-efficiency underfilling well !