摘要
高温低压复杂条件下,大位移井井眼轨迹控制困难、易井漏、钻井液性能不稳定、井底钻具易失效,为了解决上述问题,采用导向钻具控制井眼轨迹、使用耐高温底部钻具组合以及降温工艺、优选耐高温低密度钻井液体系等方法。现场应用表明,井眼轨迹实现精准打靶,所选钻井液体系具有良好的耐高温和防漏失特性,井壁稳定性及井眼清洁度良好,高温条件下井底钻具组合运行良好并且降温措施效果明显。该技术对同类油藏调整井的施工具有借鉴意义。
Under high temperature and low pressure,many problems exist in the extended reach well drilling,such as difficult well trajectory control,lost circulation,instability of drilling fluid system and failure of BHA. To solve these problems,the steering assembly is adopted to control well trajectory,in conjunction with HP-resistant BHA,cooling process and the HP-resistant low-density drilling fluid. Field application shows that,the well trajectory runs accurately,the fluid system selected can effectively resist high temperature and control lost circulation,satisfactory stability and cleanliness of wellbore are maintained,the BHA works well under high temperature and the cooling process makes effect obviously. Therefore,this technology provides a reference for drilling of adjustment wells in similar reservoirs.
出处
《特种油气藏》
CAS
CSCD
北大核心
2013年第6期80-83,145,共4页
Special Oil & Gas Reservoirs
基金
"十二五"国家科技重大专项"煤岩裂缝扩展理论研究与压裂优化设计软件开发"(2011ZX05037-004)
作者简介
刘昌弟（1980-）,男,高级工程师,2003年毕业于大庆石油学院石油工程专业,现从事海上定向钻井工作.
