The key technology of ERD include: reduce torque force and resistance, design the drilling stem with anti-high moment of torque, keep well bore stabilize and clean, reduce casing wear and so on.

• 介绍了大位移井的关键技术：减少扭力与阻力、设计抗高扭矩的钻柱、保持井眼稳定与井眼净化、下套管与减少套管磨损等。