Patent Assignment
Reel/Frame 026881/0550
Assignment of Assignor's Interest
Recorded: 2011-09-09
Pages: 7
Assignee
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE, SUGAR LAND, TEXAS, 77478
Covered Property
(1)
Surface to Borehole Electromagnetic Surveying Using Metallic Well Casings as Electrodes