摘要
针对华北油田Ф139.7 mm套管开窗侧钻井井身结构有进一步优化的空间、套管外环空间隙小、油井寿命短等技术难题,优化了全裸眼段扩眼和油层段扩眼两种井身结构。介绍了双心钻头和张开式扩眼工具的结构原理、适用性及现场应用情况。同时根据华北油田套管开窗侧钻井的特点,优选了液压张开式扩眼工具进行钻后扩眼,并推荐了最佳钻具组合。
In terms of technical problems of φ139.7 mm casing window side-tracking well in Huabei oilfield, such as casing design is unreasonable,casing outer gap is small and well age is short,the paper optimized the bare hole's and reaming hole section' well structure.Besides,the paper introduces structure principle,applicability and field application of dual core bit and opening type reaming tools.Based on the features of casing window sidetrack well in Huabei oilfield,the paper optimized reaming technology by choosing opening type reaming tools and recommended the best BHA.
引文
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