冀东油田大斜度大位移井井眼清洁技术

发布时间：2018-04-04 21:03

本文选题：冀东油田　切入点：大斜度大位移井　出处：《西南石油大学学报(自然科学版)》2017年01期

【摘要】：随着冀东油田勘探开发的持续深入,大斜度大位移井比例逐年增加,钻井过程中井眼清洁问题凸现。针对大斜度大位移井的特点,通过室内模拟实验及岩屑颗粒的受力特征探讨了岩屑床成因及岩屑运移规律。并基于水力学计算模型优化设计水力参数,应用CFD仿真模拟岩屑床清除钻杆周围流体的流动特性,评价优选钻井液材料维护钻井液性能,同时采取井眼清洁实时监测、高效携岩剂等工艺,从设计到施工全面提高井眼净化水平,形成了一套改善大斜度大位移井井眼流动条件的配套技术措施,为大位移井的安全施工提供了技术支持。现场应用结果表明,后续施工的大斜度大位移井极少发生井眼清洁不好导致的憋钻卡钻等复杂情况。
[Abstract]:With the continuous development of Jidong Oilfield, the proportion of large slope and large displacement wells increases year by year, and the problem of hole cleaning appears in the drilling process.In view of the characteristics of large slope and large displacement wells, the formation of cuttings bed and the law of cuttings migration are discussed through laboratory simulation experiments and the mechanical characteristics of cuttings particles.Based on the hydraulics calculation model, the hydraulic parameters are optimized, and the flow characteristics of the fluid around the drill pipe are simulated by CFD simulation, and the performance of the optimized drilling fluid material is evaluated. At the same time, the borehole cleaning real-time monitoring is carried out.From design to construction, a set of technical measures to improve the wellbore flow conditions are formed, which provide technical support for the safe operation of the extended reach well.The field application results show that the complex conditions such as holding back drilling and sticking due to poor hole cleaning are rarely occurred in the large slope and large displacement wells in the follow-up construction.
【作者单位】： "油气藏地质及开发工程"国家重点实验室·西南石油大学;中国石油冀东油田钻采工艺研究院;
【基金】：国家科技重大专项(2011ZX05050)
【分类号】：TE24

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