Multi-gradient drilling method and system
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United States of America Patent
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-
Mar 11, 2003
Grant Date -
Jan 31, 2002
app pub date -
Jun 5, 2001
filing date -
Jun 8, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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