PowerV和复合冲击器组合在库车克深区块应用评价及可行性分析

Application evaluation and feasibility analysis of PowerV and Composite Impactor are combined in Keshen block

克深区块位于库车坳陷克拉苏构造带,地质条件复杂,传统钟摆钻具组合和满眼钻具组合无法起到防斜打直效果。使用斯伦贝谢垂直导向工具PowerV可以有效控制井斜增长。复合冲击器除具备传统扭力冲击器的特点以外,还集成了轴向冲击功能,是综合2种冲击方式的钻井提速工具,配合其专用钻头进行一体化设计,不仅可以提高钻头在高硬度、高研磨性地层的钻进能力,还能使得Power-V距离钻头更近,提高工作效率。克深28井使用Power-V配合复合冲击器组合同时使用,该组合相互之间具备优良的适配性,且在服务井段内做到了直井纠斜和钻井提速的双保障,后期对其组合进行了可行性评价与分析,对未来克深区块复杂构造防斜快打、提高钻井效率有着重要的参考价值。

Keshen block is located in the Kelasu structural belt of Kuqa depression.The geological conditions are complex.The traditional pendulum BHA and full hole BHA can not play the effect of deviation prevention and straightening.Using Schlumberger vertical steering tool powerv can effectively control well deviation growth.In addition to the characteristics of traditional torque impactor,the composite impactor also integrates the axial impact function.It is a drilling speed increasing tool integrating two impact modes.Combined with its special drill bit,the integrated design can not only improve the drilling ability of the drill bit in high hardness and high abrasive formation,but also make the Power-V closer to the drill bit and improve the work efficiency.The combination of Power-V and compound impactor is used in Keshen 28 well at the same time.The combination has excellent adaptability to each other,and achieves the double guarantee of vertical well deviation correction and drilling speed increase in the service well section.The feasibility evaluation and analysis of its combination are carried out in the later stage,which has great reference value for the prevention of deviation and rapid drilling of complex structures in Keshen block and improving drilling efficiency in the future.