Time-lapse seismic registration and inversion for CO2 sequestration study at Cranfield Part II: Pre-stack Analysis

Rui Zhang, Xiaolei Song, Sergey Fomel, Mrinal K. Sen, Sanjay Srinivasan

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Time-lapse seismic surveys have been implemented for monitoring CO2 sequestration at Cranfield. Some of the observed misalignments between the time-lapse datasets could have resulted from seismic acquisition or processing errors. To address this, we applied a registration method to correct misalignment between time-lapse post-stack seismic datasets. Such misalignments also exist in time-lapse pre-stack datasets, leading to the application of the same registration method on the time-lapse pre-stack datasets. The application of registra- tion on the pre-stack datasets demonstrates its effectiveness on successfully separating time shift from time-lapse pre-stack AVA datasets. The improved consistency in the data allows us to invert time-lapse pre-stack datasets to capture time-lapse elastic property changes, which can be reliably used for monitoring of CO2 plume.

Original languageEnglish (US)
Pages (from-to)5015-5020
Number of pages6
JournalSEG Technical Program Expanded Abstracts
Volume32
DOIs
StatePublished - Jan 1 2013
EventSEG Houston 2013 Annual Meeting, SEG 2013 - Houston, United States
Duration: Sep 22 2011Sep 27 2011

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All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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