垣平1井是大庆已完钻水平井中最长水平位移预探井，该井在扶余油层共布置了6个靶点，设计水平段大于3000 m，水垂比大于2。通过综合考虑剖面类型、井眼曲率、靶前距以及钻柱受力等多种因素，对垣平1井可钻达地质目标的各种轨道进行了优化设计，最大程度地降低了摩阻扭矩，增加了井眼延伸距离，降低了井眼的狗腿度。另外，通过对该大位移井的钻具组合和井身结构等方面进行优化设计，为该井的安全施工和顺利完钻提供了保证，该井三开钻进2660 m水平段仅用了15.79 d，平均机械钻速17.59 m/h，创下了大庆油田完钻水平段最长、全井安全无复杂事故的记录。实现了该井评价分析扶余油层薄互层储层及探索提高低渗透油层产量的钻探目的。%Yuanping 1 Well is the longest horizontal displacement exploratory well in drilled horizontal well. In this well in Da qing Oil ifeld, six target spots are arranged in Fuyu oil-layer, the design horizontal section is longer than 3,000 m, and the horizontal-displacement to vertical-depth ratio of designing horizontal and vertical is greater than 2. Through overall consideration of proifle type, borehole curvature, target distance, drill string stress and other factors, all trajectories to drillable geological target of Yuanping 1 well is designed in an optimized manner to minimize the friction torque, increase the extended ability, and reduce the dog leg degree. In addition, through the assembling the drilling rig of the extended reach well and well bore structure optimized design, it provides the guarantee for construction safety and successful ifnish drilling. The third spud-in for horizontal interval of 2,660 m only took 15.79d, and the average rate of penetration is 17.59 m/h. This creates the record of the longest ifnish drilling horizontal section and safety without incidents of full hole in Daqing Oilifeld. This realized target of the well evaluation and analysis of Fuyu oil layer thin interbed reservoir, exploring and increasing the production of low permeability reservoir.
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