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Multi-gradient drilling method and system

United States Patent

March 11, 2003
View the Complete Patent at the US Patent & Trademark Office
A multi-gradient system for drilling a well bore from a surface location into a seabed includes an injector for injecting buoyant substantially incompressible articles into a column of drilling fluid associated with the well bore. Preferably, the substantially incompressible articles comprises hollow substantially spherical bodies.
Maurer; William C. (Houston, TX), Medley, Jr.; George H. (Spring, TX), McDonald; William J. (Houston, TX)
Maurer Technology Incorporated (Sugar Land, TX)
09/ 874,179
June 5, 2001
This invention was made with Government support under Contract No. DE-AC21-94MC31197 awarded by the Department of Energy. The Government has certain rights in this invention.