北堡西3x1大位移井钻井技术

北堡西3x1井是首次部署在冀东滩海水平位移超过3000m的大位移井,完钻井深4189m,完钻垂深2452.16m,水平位移3049.79m,最大井斜角67.18°,位移垂深比1.24:1,钻井周期59.98d。该井应用3压力剖面预测技术开展了井壁稳定技术的研究,为井身结构的设计和合理钻井液密度的设计提供了科学依据;通过摩阻、扭矩的分析,为井身剖面的选择、设备的选型和减摩减扭措施制定等提供了理论指导。该井应用了顶部驱动、MWD监测+导向钻具井眼轨迹控制、大位移井水基钻井液、高速线性振动筛、非旋转钻杆保护器、摩阻扭矩预测分析、套管滚轮扶正器和大满贯测井+钻杆输送测井等技术。系统地介绍了该井的钻井设计和现场施工技术、取得的经验和存在的问题,对今后利用大位移井钻井技术勘探开发滩海油田具有一定的借鉴意义。

Extended Reach Drilling Technology in Well BPX- 3X1

Well BPX-3x1 is the first large extended reach well located onshore of Jidong Oilfield,with a horizontal displacement of 3049.79m,a TMD of 4189m,a TVD of 2452.16m,and a Max.hole inclination of 67.18°,its displacement to TVD rate is 1.24:1,and the drilling cycle lasted out 59.98 days.Many advanced technologies were applied in drilling this well,e.g.,during well designing,Three Pressure Profile Prediction Technology was applied for wellbore stability study,to provide scientific evidences for designing the suitable casing program and drilling fluid density,by analyzing the friction and torque,some useful data were provided for well configuration selection,equipment selection and planning the friction and torque reduction measures.During well drilling,such advanced drilling technologies as top drive,MWD monitoring+steerable drill well trajectory control,water base drilling fluid for extended reach well,high speed linear shale shaker,non-rotation drill pipe protector,friction and torque prediction and analysis software,casing roller centralizer,and full hole logging+drill pipe conveyed logging were used.The drilling design and field operation,as well as the experience and defects were presented in detail