Unplanned Disconnects in Deepwater Drilling: Prevention Measures and Emergency Response

Abstract In 2000, two unplanned disconnects of the Lower Marine Riser Package (LMRP) occurred on deepwater rigs in the Gulf of Mexico. Both were attributed to human error. The IADC Deepwater Well Control Task Force reconvened to study this problem and investigate preventative measures. The results of this study were presented to the Minerals Management Service (MMS) in July 2000. The report includes recommendations regarding the Primary Control System for prevention of unplanned disconnects as well as guidelines concerning backup systems to maintain or regain wellbore security. The backup systems studied include 1) intervention by Remote Operated Vehicle (ROV); 2) deadman systems/autoshear systems; and 3) acoustic control systems.

Related Organizations

Newfield Exploration
United States
Diamond Offshore Drilling
United States

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