Inventors:
James H. Sykora - Baton Rouge LA
International Classification:
E21B 4301
Abstract:
Hydrostatic head control in the marine riser or sub-sea BOP stack of a deep water drilling unit is maintained through use of an eductor, or similar means, connected to the sub-sea BOP stack kill line for drawing salt water from the sea or mud from the sub-sea BOP stack choke line.