摘要
桩129-1HF井是目前胜利油田浅海水平位移最大的一口非常规水平井。为了解决该井钻井过程中存在的摩阻与扭矩大、井壁易坍塌、井下温度高和固完井难度大等问题,通过分析地质特点和邻井实钻资料,结合软件模拟计算,优选七段制剖面类型,确定三开次井身结构,三开优化单弯双稳钻具组合,二开斜井段及三开优选聚合物有机胺钻井液体系。优化设计后该井平均机械钻速7.07 m/h,摩阻控制在300 k N以内,水平段复合钻比例高达83.55%,电测及下筛管作业均一次成功。实钻效果表明,较小的全角变化率、减摩降扭工具和优良的钻井液润滑性能是大位移井减摩降扭的关键;合理的底部钻具组合可以增大复合钻比例,提高机械钻速;聚合物有机胺钻井液具有较强的防塌抗高温性能,能够满足深层大位移水平井的携岩护壁要求。
The unconventional horizontal well Zhuang 129 -1HF currently has the largest horizontal displace- ment in shallow water area in Shengli oilfield. In order to address the high friction and torque, wall collapse, high downhole temperatures and high completion and cementing difficulties, the geological features and offset wells drill- ing data are analyzed. Combined with the software simulation, the seven-segment well trajectory profile and three- spud wellbore configuration are selected. The BHA of single bend PDM with two centralizers is selected for the third spud. The organic amine polymer drilling fluid is selected for the second and the third spud. The well has an average ROP of 7.07 m/h, and controlled friction of less than 300 kN and a composite drilled horizontal section ratio of up to 83.55%. The wireline logging and screen pipe running operations are successfully done right the first time. The onsite drilling results indicate that the minimized rate of overall angle change, friction and torque reducing tool and excellent lubricating properties of drilling fluid are the keys to reducing the friction and torque of extended reach well. An optimized BHA could increase the proportion of composite drilling and improve the penetration rate. The or- ganic amine polymer drilling fluid has a great performance at high temperature with a strong anti-collapse capacity, thus meeting the requirements of cuttings carrying and wellbore protection in deep extended reach horizontal well.
出处
《石油机械》
北大核心
2014年第12期17-21,共5页
China Petroleum Machinery
基金
国家863计划项目"海上大位移井钻完井关键技术开发与集成"(2012AA091501)
关键词
桩129—1HF井
大位移水平井
钻井工程
优化设计
摩阻
扭矩
减摩降扭
well Zhuang 129 - 1HF
extended reach horizontal well
drilling engineering
optimal design
friction
torque
friction and torque reduction
作者简介
贾江鸿，在站博士后，生于1979年，现从事钻井工艺方面的研究工作。地址：（257017）山东省东营市。E—mail：jiajianghong79@163．com。
