油水井耐高温高压复合橡胶长效密封技术

发布时间：2018-05-16 20:30

本文选题：高温高压 + 复合橡胶　；参考：《中国石油和化工标准与质量》2016年22期

【摘要】：氢化丁腈橡胶是适用于高温高压深井条件的密封制品,但由于氢化丁腈分子链上的少量不饱和键在高温下极易发生热氧老化而失去密封性,与橡胶胶筒配套的井下工具封隔器不能在井下长期有效工作。本文从提高橡胶分子主链的饱和度着手,采用单官能度的不饱和羧酸盐—氢氧化单甲基丙烯酸锌对橡胶基体进行改性增强研究,来提高复合橡胶材料的高温力学性能。同时,通过建模、加载、计算分析,对橡胶胶筒结构进行了组合式设计优化,提高了复合橡胶材料的耐压性能。并通过在现场应用耐高温高压复合橡胶长效密封技术,验证了复合橡胶密封件达到了耐温≥170℃、压差≥35 MPa、有效期≥1年的技术指标要求,实现了深层油气藏的高效精细开发。
[Abstract]:Hydrogenated NBR is a sealing product suitable for high temperature and high pressure deep well conditions, but because a small amount of unsaturated bonds on the hydrogen nitrile molecular chain are vulnerable to thermal oxygen aging at high temperature, it loses its sealing ability. The underground tool packer matching rubber cylinder can not work well in the underground for a long time. At the same time, a single functional unsaturated carboxylic acid salt hydrogen peroxide zinc methacrylate was used to improve the rubber matrix to improve the mechanical properties of the composite rubber material. At the same time, the composite rubber tube structure was optimized by modeling, loading, calculation and analysis, and the resistance of the composite rubber material was improved. By applying the long effect sealing technology of high temperature and high pressure compound rubber in the field, it is proved that the compound rubber seal has achieved the technical requirements of the temperature of more than 170 C, the pressure difference more than 35 MPa and the effective period of more than 1 years, and the high efficiency and fine development of the deep oil and gas reservoirs is realized.
【作者单位】：中石化胜利油田石油工程技术研究院;中石化胜利油田纯梁采油厂集输大队;
【分类号】：TE931.2;TQ336.42

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