Interferometric full-waveform inversion of time-lapse data

Citation data:

SEG Technical Program Expanded Abstracts 2017, Page: 5814-5818

Publication Year:
2017
Usage 38
Downloads 32
Abstract Views 6
Repository URL:
http://hdl.handle.net/10754/625385
DOI:
10.1190/segam2017-17643060.1
Author(s):
Mrinal Sinha
Publisher(s):
Society of Exploration Geophysicists
Tags:
4D; full-waveform inversion
conference paper description
One of the key challenges associated with time-lapse surveys is ensuring the repeatability between the baseline and monitor surveys. Non-repeatability between the surveys is caused by varying environmental conditions over the course of different surveys. To overcome this challenge, we propose the use of interferometric full waveform inversion (IFWI) for inverting the velocity model from data recorded by baseline and monitor surveys. A known reflector is used as the reference reflector for IFWI, and the data are naturally redatumed to this reference reflector using natural reflections as the redatuming operator. This natural redatuming mitigates the artifacts introduced by the repeatability errors that originate above the reference reflector.