08315486 is referenced by 8 patents and cites 21 patents.

A method for obtaining information about a subsurface formation from acoustic signals that contain information about to the subsurface formation, comprises: providing a fiber optic having a proximal end and a remote end, with the proximal end being coupled to a light source and a proximal photodetector, wherein said fiber optic cable includes randomly spaced impurities and selectively placed Bragg gratings and wherein the fiber optic cable is acoustically coupled to the subsurface formation so as to allow the acoustic signals to affect the physical status of at least one grating: transmitting at least one light pulse into the cable; receiving at the photodetector a first light signal indicative of the physical status of at least one first section of the cable, and outputting at least one item of information to a display.

Title
Distributed acoustic sensing with fiber Bragg gratings
Application Number
12/580130
Publication Number
8315486 (B2)
Application Date
October 15, 2009
Publication Date
November 20, 2012
Inventor
Dennis Edward Dria
Houston
TX, US
Frederick Henry Kreisler Rambow
Houston
TX, US
Jeremiah Glen Pearce
Houston
TX, US
Assignee
Shell Oil Company
TX, US
IPC
G02B 6/00
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