Core Insights - The article discusses the challenges faced by Shengli Oilfield's Jibei Oil Management Area as it enters the later stages of development, including issues like increased well leakage, high operational costs, and oil layer contamination [1] - A new dual sealing technology has been developed to address these challenges, significantly improving operational efficiency and development benefits while protecting oil reservoirs [2] Group 1: Challenges in Oilfield Development - Shengli Oilfield has been in exploration and development for nearly 30 years, leading to complications such as increased leakage and high operational costs [1] - Traditional sealing technologies have limitations, including long operational cycles, low success rates, and potential for increased oil layer contamination [1] Group 2: Innovative Solutions - The newly developed dual sealing technology combines Y221 and Y445 sealing devices with hydraulic anchors, effectively addressing long well section leakage and re-entry challenges [2] - This technology has shown a 100% success rate in 11 well operations, with an average effective period of 201 days and an estimated annual oil increase of 1,500 tons [2] Group 3: Economic Impact - The implementation of the dual sealing technology has generated a cumulative profit of 4 million yuan, with an expected annual profit of 5.5 million yuan [2] - The successful application of this technology not only provides an efficient solution for long well section leakage but also highlights the importance of technological innovation in reducing costs and enhancing development quality [2]

据了解，传统封堵技术的弊端在于普通灰封面对多漏点、多油层井时，面临作业占井周期长、成功率 低，还易加剧油层污染。不仅如此，这种措施单井费用超过10万元，还有可能加速套管腐蚀，带来报废 等隐患。 如果使用膨胀管补贴，对井筒条件要求严苛，增加井筒后期处理难度；普通双封卡漏技术则无法验封， 易下滑，有效期短。长此以往，导致大量高液、高含水、高年限油水井因封堵难题长停，造成宝贵储量 损失。 针对这一现状，技术人员创新推出双封卡漏技术工艺，通过精准搭配封隔器与水力锚，先根据井斜调整 Y221封隔器座封吨位，正试挤验封合格的同时实现油层与滤砂管解堵，然后投球使Y445封隔器高压座 封，反试挤验封后打高压丢封，从根本上杜绝封隔器下滑、上移风险。 本报10月22日讯(大众新闻记者顾松通讯员王祖江)经过近30年的勘探开发，胜利油田鲁明公司济北采油 管理区所辖区块进入开发中后期。随着套破井增多、多漏点封堵难、作业成本高、油层污染等问题叠 加，曲堤油田高效开发出现了"拦路虎"。 相比传统技术，该技术作业占井周期短、成本低，且不受井况限制，可广泛适用于长井段套漏及补孔下 返大跨度油层井，有效避免灰封带来的油层污染问题。 面对传统灰封 ...