Determination of azimuthal offset and radius of curvature in a deviated borehole using periodic drill string torque measurements

• 1. 确定用来确定偏斜误差信号(SES)以调节驱动单元中的磁头的SES偏移 [P] . 中国专利： CN104321816A . 2015-01-28
• 2. 超小曲率半径隧道盾构施工中仿形刀的使用方法 [P] . 中国专利： CN103527208A . 2014-01-22
• 3. DETERMINATION OF AZIMUTHAL OFFSET AND RADIUS OF CURVATURE IN A DEVIATED BOREHOLE USING PERIODIC DRILL STRING TORQUE MEASUREMENTS [P] . CA2652477C . 2010-10-19

  机译： 用周期钻轮扭矩测量确定钻头的方位角偏移和曲率半径

• 4. Determination of azimuthal offset and radius of curvature in a deviated borehole using periodic drill string torque measurements [P] . AU2009200330B2 . 2010-08-05

  机译： 使用定期钻柱扭矩测量确定偏斜钻孔中的方位角偏移和曲率半径

• 5. Determination of azimuthal offset and radius of curvature in a deviated borehole using periodic drill string torque measurements [P] . 美国专利： US7730943B2 . 2010-06-08

  机译： 使用定期钻柱扭矩测量确定偏斜钻孔中的方位角偏移和曲率半径

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