Patent Assignment
Reel/Frame 022533/0274
Assignment of Assignor's Interest
Recorded: 2009-04-10
Pages: 3
Assignor
ALBERTY, MARK W
Executed: 2008-04-10
Assignee
BP CORPORATION NORTH AMERICA INC.
4101 WINFIELD ROAD, MAIL CODE 5 EAST, WARRENVILLE, ILLINOIS, 60555
Covered Property
(1)
Annulus Mud Flow Rate Measurement While Drilling and Use Thereof to Detect Well Dysfunction