Core Insights - The "773" blockage removal and sand prevention technology developed by Shengli Oilfield's Luming Company has shown significant results in the application at Qu 9-斜259 and Qu 9-斜257 wells, providing replicable experience for similar oil reservoir development [1][2] - The technology addresses seven types of blockage issues, including drilling mud pollution risks and sand-carrying liquid damage, through systematic analysis and collaborative efforts [1] - The "773" technology employs a composite of seven technical measures, creating a three-level governance system of "dredging, stabilization, and prevention" [1] Technical Details - The technology integrates three processes into one, significantly reducing the operation cycle by 20% and saving operational costs by 30,000 yuan per well, enhancing operational efficiency and economic viability [1] - After applying the technology at Qu 9-斜259, the well pressure decreased from 14.5 MPa to 9.3 MPa, and the daily water injection increased from zero to 20 cubic meters [1] - The daily oil production at Qu 9-斜242 increased from 3.5 tons to 4 tons, with a reduction in water cut by 4.4 percentage points and a rise in dynamic liquid level by 120 meters [1] Broader Implications - The "773" technology has achieved key breakthroughs in multiple rounds of well sand prevention and protection of water-sensitive and rapid-sensitive oil layers, forming a comprehensive technical system [2] - Preliminary estimates suggest that large-scale application of this technology could reduce the frequency of measures by over 20%, effectively lowering development costs while maximizing production capacity [2] - The complete technical specifications have been established, and the technology is being promoted across different development units in the Jibei Oil Production Management Area, demonstrating significant implications for enhancing oil recovery rates [2]

该工艺在曲9-斜259水井中应用后，油井压力从14.5兆帕降至9.3兆帕，日注水量从注不进提升至20方。 对应油井曲9斜242日产油量从3.5吨提升至4吨，含水率下降4.4个百分点，动液面回升120米。 据了解，"七七三"解堵防砂工艺采用分段酸化与高压水射流脉冲负压返排联作、变排量覆膜砂端部脱砂 等七项复合技术措施，构建起"近井疏通—远井稳砂—中部固结"的立体治理网络，形成"疏、稳、防"三 级治理体系。 其中，济北采油管理区自主研发的D108毫米筒式三棱锥形合金笔尖尤为亮眼。它将原先防砂前冲砂、 防砂后钻砂塞、挤固砂剂需要的三趟工序整合为一趟工序，使作业周期缩短20%，单井节省作业费用3 万元，极大提升了作业效率与经济性。 本报9月28日讯(大众新闻记者顾松通讯员王祖江)近日，胜利油田鲁明公司济北采油管理区创新研发 的"七七三"解堵防砂工艺体系，在曲9斜259水井和曲9斜257油井的应用中取得显著成效，为同类油藏开 发提供了可复制的经验。 针对钻井泥浆污染风险、携砂液伤害等七大类堵塞问题，济北采油管理区技术人员经过系统分析和联合 攻关，解决油藏高效开发的水井增注难题。 "七七三"解堵防砂工艺还在多轮次水井防砂 ...