据世界石油新闻2020年10月13日休斯敦报道，全球最大油田服务公司之一的哈里伯顿公司日前推出了压碎和剪切混合式钻头，这是一项新技术，它把传统的聚晶金刚石复合片（PDC）刀具的效率和滚动元件的扭矩降低能力结合在一起，通过改变地层来提高钻井效率和最大化钻头稳定性。
目前的混合式钻头技术通过把刀具和滚动元件放置在多余的位置牺牲了钻井速度。压碎和剪切技术通过在钻头的中心放置锥形牙轮来实现对地层的有效压碎，并把刀具移到端面以实现最大的岩石剪切。因此，这种新型混合式钻头增加了控制能力、耐用性，并实现了更高的钻速。
哈里伯顿公司钻头和服务部门副总裁David Loveless说：“我们采用了一种不同的混合式钻头技术，优化了刀具的放置位置，提高了钻井效率，同时提高了侧向稳定性。”“压碎和剪切技术将帮助作业者钻得更快以及更好地控制硬岩、易振动井和传统混合式或锥形牙轮的曲线应用。
每个钻头也利用客户界面 (DatCI)设计流程，哈里伯顿公司的本地钻头专家网与运营商合作，为盆地的特定应用定制钻头。在米德肯地区，挤压和剪切钻头帮助作业者在一次运行中成功完成了他们的曲线部分，机械钻速达到了25英尺/小时，超过了探边井的机械钻速25%。这为客户节省了12多万美元。
李峻 编译自 世界石油新闻
原文如下：
New Halliburton hybrid drill bit increases stability, drilling efficiency
Halliburton Company introduced Crush & Shear Hybrid Drill Bit, a new technology that combines the efficiency of traditional PDC cutters with the torque-reducing capabilities of rolling elements to increase drilling efficiency and maximize bit stability through changing formations.
Current hybrid bit technologies sacrifice drilling speed by placing the cutters and rolling elements in redundant locations. Crush & Shear technology reimagines the bit by placing roller cones in the bit’s center for efficient crushing of the formation and moves the cutters to the shoulder for maximal rock shearing. As a result, the bit increases control, durability and achieves a higher rate of penetration.
“We took a different approach to hybrid bit technology and optimized the cutter placement to increase drilling efficiency while providing improved lateral stability,” said David Loveless, vice president of Drill Bits and Services. “Crush and Shear technology will help operators drill faster with better control in hard-rock, vibration-prone wells and traditional hybrid or roller cone curve applications.”
Each bit also leverages the Design at the Customer Interface (DatCI) process, Halliburton’s local network of drill bit experts who collaborate with operators to customize bits for basin-specific applications. In the Midcon region, the Crush and Shear bit helped an operator successfully complete their curve section in just one run – achieving an ROP of 25 feet/hour beating the ROP in the offset well by over 25 percent. This saved the customer over $120,000.
