SOFT TORQUE ROTARY SYSTEM REDUCES DRILLSTRING FAILURES

Kazem Javanmardi, Debbie Gaspard Shell Offshore Inc. New Orleans The use of the soft torque system has significantly reduced torque fluctuations (up to 80%), torsional drillstring vibrations, and bit slip-stick conditions to help reduce drillstring failures and improve penetration rates in deep directional wells. Shell Offshore Inc. (SOI) successfully installed and operated the soft torque rotary system on two rigs drilling in Mobile Bay.

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