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Seismic reflection data processing of 3D surveys over an EOR CO<inf>2</inf> injection

Harbert, W and Purcell, C and Mur, A (2011) Seismic reflection data processing of 3D surveys over an EOR CO<inf>2</inf> injection. Energy Procedia, 4. 3684 - 3690. ISSN 1876-6102

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In this project three 3-D reflection seismic surveys were analyzed with respect to pre and post stack reflection processing steps that resulted in the identification of a possible pre-stack seismic attribute proxy for subsurface supercritical CO2. The project was part of the Bureau of Economic Geology collaboration with the National Energy Technology Laboratory of the United States Department of Energy and the Bureau of Economic Geology as part of a Southwest Regional CO2 Sequestration Partnership. A variety of processing techniques were used to calculate seismic attributes and invert the seismic post stack seismic data to determine acoustic impedance. Methodologies for acoustic impedance inversion included Model-based inversion, bandwidth limited inversion, colored inversion, sparse spike, and neural network. In addition, pre-stack amplitude variation with offset (AVO) analysis was completed using second order polynomial, third order polynomial, Shuey 2-term, Shuey 3-term, linear, Verm-Hilterman, Aki- Richards 2-term and Aki-Richards 3-term methods. Using a combination of Shuey 3-term coefficients we believe that we have identified a useful proxy for monitoring subsurface CO2. In our analysis the attribute anomaly variation proxy is spatially located above brine fluid, flat bottomed and appears to be pore-phase variation. It follows reasonable trapping geometries and appears to be linked with possible earlier CO2 injection sites. © 2011 Published by Elsevier Ltd.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Harbert, Wharbert@pitt.eduHARBERT
Purcell, C
Mur, Aajm43@pitt.eduAJM43
Date: 1 January 2011
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Journal or Publication Title: Energy Procedia
Volume: 4
Page Range: 3684 - 3690
Event Type: Conference
DOI or Unique Handle: 10.1016/j.egypro.2011.02.300
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Refereed: Yes
ISSN: 1876-6102
Date Deposited: 25 Aug 2012 14:08
Last Modified: 09 Jul 2022 04:55


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