CAJ | 학술논문

打捞水平井裸眼段落鱼管柱是一项高难度高风险作业。水平段摩阻大，扭矩传递困难，震击、倒扣、套铣等常规打捞钻柱组合难以实现预期效果。针对以上问题，结合裸眼段地层岩性，在增加有效钻压、降低井筒摩阻、倒置震击器组合、优选打捞及套铣工具等多方面进行了研究，对常规打捞钻柱进行了优化。NB35-2-B29hst1井打捞实践证实，优化后的钻柱组合大大提高了水平裸眼井打捞实效，降低了作业风险，可为同类井打捞作业提供有益的借鉴。
타로수평정라안단락어관주시일항고난도고풍험작업。수평단마조대，뉴구전체곤난，진격、도구、투선등상규타로찬주조합난이실현예기효과。침대이상문제，결합라안단지층암성，재증가유효찬압、강저정통마조、도치진격기조합、우선타로급투선공구등다방면진행료연구，대상규타로찬주진행료우화。NB35-2-B29hst1정타로실천증실，우화후적찬주조합대대제고료수평라안정타로실효，강저료작업풍험，가위동류정타로작업제공유익적차감。
Fishing work in horizontal wells is a high dififcult and high risky operation. The horizontal section has large friction resistance and dififcult torque transmission, so the conventional ifshing string assembly of jarring, back off, and casing milling is hard to obtain expected results. According the problem above, combined with the lithology of openhole section, some aspects are studied, such as increasing effective drilling pressure, decreasing wellbore friction resistance, revering jarring assembly, and operimizing ifshing and milling tools, resulting in optimization of the conventional ifshing string. The ifshing operation on Well NB35-2-B29hst1 proved that the optimized ifshing string increased sharply the ifshing efifciency of openhole horizontal wells and decreased operation risk, which could be a reference for ifshing operations on similar wells.