公开(公告)号：US20220179112A1

公开(公告)日：2022-06-09

申请号：US17115190

申请日：2020-12-08

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Mustafa N. AlAli ,  Timur Zharnikov ,  Thierry-Laurent D. Tonellot ,  Ali Ameen Almomin ,  Marwan Charara

IPC: G01V1/22 ,  G01V1/42 ,  G01V1/30 ,  G01V1/36

Abstract: A system including a sonic source deployed in a first borehole and a fiber optic distributed sensor deployed in a second borehole, both boreholes extending from an earth surface into a formation. The optical fiber is configured to react along its length to incident sonic waves generated by the sonic source and propagating through the first borehole, through the formation, and through the second borehole. The system further includes an optical source to launch optical pulses into the fiber optic distributed sensor while the sonic waves are incident on the fiber optic distributed sensor. The system also includes a data acquisition system coupled to the fiber optic distributed sensor to detect temporal variations in coherent Rayleigh noise (CRN) generated in the fiber optic distributed sensor in response to the optical pulses and the incident sonic waves; and a computer system configured to receive data from the data acquisition system.