Abstract: Compound resin used for blockage agent for leakage breaking through casing can solve a series of problems arising from various causes during the high water-cut period, such as leakage of oil wells and water wells, casing damage and casing deformation. The basic formula can satisfy the formation temperature from 40℃ to 110℃ while the controllable reaction time is three to eight hours. The tensile strength of cured samples ranges from 10. 8MPa to 13MPa, the compressive strength from 13MPa to 87MPa and the anti-shearing strength from 9. 2MPa to 28. 9MPa. The dissolution rate of cured samples is lower than 1 percent when soaked respectively in the solutions of 10% HCI, 10% NaOH and 10% NaCI for 24 hours at the temperature of 100℃. Field application of chemical composite resin for preventing casing leakage showed that it had high mechanical strength after solidifying, and had strong penetration ability to the permeable channels, with better durability, higher technical reliability and process success rate.

摘要： 套管窜漏封固用化学复合树脂用于治理油田高含水期由于各种原因造成的油井、水井窜漏以及套损、套 变问题。基本配方适应地层温度40~ 110℃, 可控反应时间3~ 8h, 固化后抗拉强度10. 8~ 13. 1MPa, 抗压强度13 ~ 87MPa, 抗剪切强度9. 2~ 28. 9MPa; 在100℃ 条件下, 样品固化后用浓度分别为10%的HCl、NaOH、NaCl 溶液浸泡 24h, 溶蚀率均小于1%。套管窜漏封固用化学复合树脂现场应用表明, 固化后机械强度高, 对渗透通道的穿透能力强, 耐久性较理想, 具有较高的技术可靠性和工艺成功率。

关键词: 套损, 套变, 油水井窜漏, 化学复合树脂, 华北油田