浅析套管钻井技术

Simple Analysis Casing Drilling Technology

按套管钻井技术中钻进工具和操作技术不同,套管钻井有3种不同的形式,即可回收钻具组合的套管钻井技术、尾管钻井技术和可破碎的钻头套管钻井技术。分析了套管钻井技术的优越性和套管钻井参数,并指出了应该注意的问题。套管钻井技术使钻井液水力参数得到明显改善,有利于井眼净化和当量钻井液密度控制。套管钻井可以简化钻井程序和井身结构、减少钻井事故、提高钻井效益、节约钻井成本。

Casing drilling technology is the drilling operation with penetrating and casing program simultaneously in one trip and casing as drill string.Casing drilling method is divided into three categories based on tools composition and operation technique,those were retractable bit method,or liner drilling and drillable bit method.Casing drilling technology improved significant hydraulic parameters,which enables cleaning of bore-hole and controlling equivalent effective density（ECD）.Casing drilling can provide less drilling operation,decrease the number of casing strings and well construction,decrease the risk and contingencies of drilling performance,and minimize