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垦东128-1侧井位于济阳坳陷垦东凸起东部斜坡带垦东70块,它是在原直井—垦东128-1井的基础上进行填井侧钻,完钻井深2119m,造斜点440m,最大井斜73.7度,垂深1162.40m,井底位移1430.67m,位垂比达1.23。本文通过对施工过程进行分析,指出了井斜与位移都比较大的井施工时技术难点,论述了本井中从降低摩阻与扭矩、井壁稳定、井眼净化等方面采取的措施,为今后类似井施工提供宝贵的施工经验。
Kedong 128-1 lateral well is located in the eastern part of Kedong 70 in Kendong of Jiyang Depression. It is based on the original straight well-Kendong 128-1 well for sidetrack drilling with a completion depth of 2119m Inclined point 440m, the maximum inclination of 73.7 degrees, the depth of 1162.40m, 1430.67m bottom hole displacement, bit-vertical ratio of 1.23. The paper analyzes the construction process and points out the technical difficulties in well construction with large deviation and displacement. The measures taken in reducing the friction and torque, stabilizing the borehole wall and purifying boreholes are discussed. Similar well construction provides valuable construction experience.