Method and device for controlling drilling fluid pressure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 16, 2010
Grant Date -
May 31, 2007
app pub date -
Nov 24, 2004
filing date -
Nov 27, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of reducing drilling fluid pressure during subsea drilling, where drilling fluid is pumped down into a borehole and then flows back to a drilling rig via the lined and/or unlined sections of the borehole and a liner, wherein the drilling fluid pressure is controlled by pumping drilling fluid out of the liner at the seabed, and where the liner annulus above the drilling fluid is filled with a riser fluid having a density different from that of the drilling fluid.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully