Monitoring CO2 movement by interpreting time-lapse seismic data using rock physics modeling in the Tuscaloosa formation, Cranfield, MS Valley

Ranjana Ghosh, Rui Zhang, Mrinal K. Sen, Sanjay Srinivasan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Causes and effects of global warming are a highly debated topic. Nonetheless injection and storage of CO2 (CO2 sequestration) in the subsurface has been becoming an accepted practice to reduce the amount of CO2 from atmosphere, which is a primary contributor to the global warming. Monitoring of CO2 movement with time is essential to ensure that sequestration is not hazardous. We propose a method to assess CO2 saturation using pressure dependent differential effective medium theory (DEM). According to the conventional DEM theory, cavities are isolated with respect to fluid flow, but pressure-dependent DEM theory accounts for wave induced fluid flow between cavities. Our study area is the Cretaceous lower Tuscaloosa formation at Cranfield in Mississippi, USA, which is one of the active enhanced oil recovery (EOR), and CO2 capture and storage (CCS) fields. One injection well (F1) and two observation wells (F2 and F3) are present closely (within 112 meters) in our area of study within this region. Since the three wells are closely situated, we have focused on the injection well F1 and the furthest observation well F3 to monitor CO2 movement. Time-lapse (pre- and post injection) log, core and surface seismic data are used for quantitative assessment of CO2 saturation using our rock physics model. We estimate an average CO2 saturation in F1 to be 55-60% and that in F3 to be 50-55% in an injection zone of thickness ~25 m at a depth ~3 kilometer after approximately nine months of injection.

Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
PublisherSociety of Exploration Geophysicists
Pages2186-2190
Number of pages5
ISBN (Print)9781622769452
DOIs
StatePublished - Jan 1 2012
EventSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 - Las Vegas, United States
Duration: Nov 4 2012Nov 9 2012

Publication series

NameSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012

Other

OtherSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
CountryUnited States
CityLas Vegas
Period11/4/1211/9/12

All Science Journal Classification (ASJC) codes

  • Geophysics

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    Ghosh, R., Zhang, R., Sen, M. K., & Srinivasan, S. (2012). Monitoring CO2 movement by interpreting time-lapse seismic data using rock physics modeling in the Tuscaloosa formation, Cranfield, MS Valley. In Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 (pp. 2186-2190). (Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2012-0917.1