CAJ | 학술논문

针对海洋油田长时间开发后出现的套管完整性问题，考虑到传统的修补措施如跨越式封隔器等无法满足后期作业对井眼尺寸的要求的现状，提出了套管外补贴技术。介绍了套管外补贴的原理及在惠州油田HZ19－3－6和HZ26－1－16井的应用情况。结果表明，修复后的套管能保持原有强度且产生永久密封，具有不“牺牲”井眼尺寸等优点。针对作业过程中出现的复杂情况进行了深入分析，对海洋油田套管完整性的修复工作具有实践和理论指导意义，同时也给水井、地热井套管的修复提供借鉴和启示。
침대해양유전장시간개발후출현적투관완정성문제，고필도전통적수보조시여과월식봉격기등무법만족후기작업대정안척촌적요구적현상，제출료투관외보첩기술。개소료투관외보첩적원리급재혜주유전HZ19－3－6화HZ26－1－16정적응용정황。결과표명，수복후적투관능보지원유강도차산생영구밀봉，구유불“희생”정안척촌등우점。침대작업과정중출현적복잡정황진행료심입분석，대해양유전투관완정성적수복공작구유실천화이론지도의의，동시야급수정、지열정투관적수복제공차감화계시。
Aiming at the casing integrity after long period of production, as for the traditional remedial measures, such as with straddle packer, cannot meet the post-operation requirements for borehole size, external casing patch technology was proposed.The paper introduces the principles of the external casing patch and the application in HZ19-3-6 and HZ26-1-16 of Huizhou oilfield.The results show that the repaired casing can maintain the original strength and produce perma-nent seal with the advantages of remaining borehole size.The analysis is made on the complicated situations in operation process, which has practical and theoretical guiding significance for the repair work of marine oil casing integrity and pro-vide reference and inspiration to casing repair of water well and geothermal well.