Carr, D.

Meckel, T. A.

Taylor, J. L.

Trevino, R. H.

Wallace, K. J.

English

Texas ScholarWorks

An atlas of CO2 storage potential in the nearshore waters of the Texas coast – American Recovery and Reinvestment Act – “Gulf of Mexico Miocene CO2 site characterization mega-transect”     GCCC Digital Publication Series #13-21     R. H. Trevino K. J. Wallace J. L. Taylor D. Carr T. A. Meckel                   Cited as:  Trevino, R.H., Wallace, K.J., Taylor, J.L., Carr, D., and Meckel, T.A., 2013, An atlas of CO2 storage potential in the nearshore waters of the Texas coast – American Recovery and Reinvestment Act – “Gulf of Mexico Miocene CO2 site  characterization mega-transect”: presented at the Carbon Storage R&D Project Review Meeting, 20-22 August 2013. GCCC Digital Publication Series #13-21. Keywords: Capacity; Regional study-Gulf Coast; Site selection  Ramón Treviño, Kerstan Wallace, Jordan-Leigh Taylor, David Carr, and Tip MeckelBureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin QAe2099The methodology (below) used to generate static-capacity-related maps and figures is based on Goodman et al. (2011). GCO2 = At × hg × Φt × ρCO2 × Esaline (tonnes or metric tons),whereAt = geographical area defining region of CO2 storagehg = gross formation thickness (Note: we further refined         this term by using the net sand map, above.) Φt = total porosityρCO2 = density of CO2 estimated at temperature and            pressure anticipated storage (reservoir) conditionsEsaline = CO2 storage-efficiency factorGeosequestration of anthropogenic carbon in offshore sites offers several advantages over onshore geosequestration, including (1) lack of USDW and (2) the existence of a single surface and subsurface (pore space) owner (e.g., state or federal government) that can accept long-term liability for the CO2. The offshore state waters of Texas represent a significant state and national geosequestration resource that has high potential for near-term development. Data availability from decades of extensive petroleum exploration (e.g., well and seismic data) and infrastructure (e.g., pipelines) are advantageous. The populous Houston metro area and its high concentration of industries could provide nearby sources of anthropogenic CO2. The Miocene-age geologic section is especially prospective because of its numerous potential sandstone reservoirs. In addition, the Miocene section encompasses multiple thick, regionally extensive mudrock units that could compose high-quality confining systems. In order to quantify the prospectivity of the Miocene section along the upper Texas coast, the Gulf of Mexico Miocene Site-Characterization Mega-Transect study is compiling a geologic atlas that can serve as a resource for commercial, regulatory, and other stakeholder interests in the area. The atlas will summarize our research on several important topics: (1) a summary of the utilized datasets; (2) an overview of the regional geology, including the petroleum system as analog for injected CO2; (3) a synopsis of the confining system, including both top-seal and fault-seal research; (4) a review of regional capacity estimates; and (5) a summary of CO2 “plays” and specific prospective storage sites. Presented here are examples of regional geologic features and research components utilized to estimate regional CO2 storage capacity.IntroductionFour maps of the northwest Gulf of Mexico Basin compiled from various sources; see references. Note study area (solid red polygon), offshore portion of Texas State Waters, approximately 1 km (10 mi) wide.Regional Features CO2 Regional Static Storage-Capacity CalculationsMap highlighting Lower Cretaceous  shelf edge (dashed maroon line), outcrop of Miocene-age rock units, upper Miocene shelf margin (dashed blue line), modern-day bathymetry (solid blue lines), and study area (solid red line). Diagram illustrating composi-tion of interval over which static capacity was calculated. Capacity interval defined here as portion of Miocene strata present at depths suitable for CO2 storage. Top of capacity interval equivalent to shallow-est depth at which CO2 will remain supercritical or the top of the Miocene interval, whichever is deeper. In study area, minimum depth for supercritical CO2 is 3,300 ft (1,006 m). Base of capacity interval is top of overpressure or the base of the Miocene section, whichever is shallower.  Calculated storage capacity per square mile of net reservoir portion of capacity interval.An Atlas of CO2 Storage Potential in the Nearshore Waters of the Texas Coast American Recovery and Reinvestment Act—“Gulf of Mexico Miocene CO2 Site Characterization Mega-Transect” StudyEwing, T. E., and Lopez, R. F., 1991, Principal structural features, Gulf of Mexico Basin, in Salvador, A., ed., The Gulf of Mexico Basin, v. J of The Geology of North America: Boulder, CO, Geological Society of America, Plate 2.  Galloway, W. E., 1989, Depositional framework and hydrocarbon resources of the early Miocene (Fleming) episode, northwest Gulf Coast Basin, in Hunt, M. C., and Doenges, S. V., eds., Studies related to continental margins: Marine Geology, v. 90, p. 19-29.Galloway, W. E., 2009, Depositional evolution of the Gulf of Mexico sedimentary basin, in Miall, A., ed., Sedimentary Basins of the World, v. 5, p. 507-551. Galloway, W. E., Ewing, T. E., Garrett, C. M., Tyler, Noel, and Bebout, D. G., 1983, Atlas of Major Texas Oil Reservoirs: The University of Texas at Austin, Bureau of Economic Geology Special Publication, 139 p. plus plates. Galloway, W. E., Ganey-Curry, P. E., Li, X., and Buffler, R. T., 2000, Cenozoic depositional history of the Gulf of Mexico basin: American Association of Petroleum Geologists Bulletin, v. 84, p. 1743-1774.  Geomap Extended Executive Reference Map, 2009, Gulf of Mexico, Map No. 370, Generalized Structural Contours, 1"=6 miles, 101" x 42", Geomap ® Company, Plano, Texas. Gong, J., and Shelton, J. W., 2000a, GIS Atlas of Oil and Gas Fields, F1. US Gulf Coast, 50 fields covered, Tulsa, 1 CD-ROM, AAPG Datapages. Gong, J., and Shelton, J. W., 2000b, GIS Atlas of Oil and Gas Fields, F2. US Gulf Coast, 50 fields covered, Tulsa, 1 CD-ROM, AAPG Datapages.Goodman, A., Hakala, A., Bromhal, G., Deel, D., Rodosta, T., Frailey, S., Small, M., Allen, D., Romanov, V., Fazio, J., Huerta, N., McIntyre, D., Kutchko, B., and Guthrie, G., 2011, US DOE methodology for the development of geologic storage potential for carbon dioxide at the national and regional scale: International Journal of Greenhouse Gas Control, v. 5, p. 952-965. Huffman, A. C., Kinney, S. A., Biewick, L. R. H., Mitchell, H. R., and Gunther, G. L., 2004, Salt Diapirs in the Gulf Coast [gcdiapirg], Downloadable GIS Data, Gulf Coast Geology (GCG) Online - Miocene of Southern Louisiana: U.S. Geological Survey, Denver, CO. (web address: http://gulfsci.usgs.gov/gom_ims/gcg_ims.html ) Kosters, E. C., Bebout, D. G., Seni, S. J., Garrett, C. M., Jr., Brown, L. F., Jr., Hamlin, H. S., Dutton, S. P., Ruppel, S. C., Finley, R. J., and Tyler, Noel, 1989, Atlas of Major Texas Gas Reservoirs: The University of Texas at Austin, Bureau of Economic Geology Special Publication, 161 p. plus plates. Lopez, J. A.,1995, Salt Tectonism of the United States Gulf Coast Basin, Second Edition Map, New Orleans Geological Society, New Orleans, LA.  Martin, R. G., 1980, Distribution of Salt Structures, Gulf of Mexico: U.S. Geological Survey Miscellaneous Field Studies Map MF-1213. Pitman, J. K., 2009, Reservoirs and Petroleum Systems of the Gulf Coast, AAPG Datapages, GIS Open Files, American Association of Petroleum Geologists, http://www.datapages.com/Partners/AAPGGISPublicationsCommittee/GISOpenFiles/ReservoirsandPetroleumSystemsoftheGulfCoast.aspx. Seni, S. J., Hentz, T. F., Kaiser, W. R., and Wermund, E. G., Jr., eds., 1997, Atlas of Northern Gulf of Mexico Gas and Oil Reservoirs: Volume 1. Miocene and Older Reservoirs: The University of Texas at Austin, Bureau of Economic Geology, 199 p.ReferencesWe gratefully acknowledge the input of colleagues and research assistants, past and present, whose work has contributed to our understanding of the study area’s geology and whose research continues to  provide insight in the current preparation of the atlas:Andrew Nicholson, Jiemin Lu, Changbing Yang, Erin Miller, Tyler Fritz, Wylie Walker, Tamara Sopoeva, Nolan Townsend, Brandon Johnson, Amar Amir, Elissia Derasen, Nwachukwu Anyamele, Emmanuel Belostrino, and Luis Rangel.AcknowledgmentsTypical well log of Miocene interval along  upper Texas coast. Note unit tops used in regional correlations (e.g., middle Miocene), paleontological markers (italics, right), and geologic age (left). Also note approximate location of well (inset map). (modied from Galloway et. al., 2000)Map detailing major regional faults and age of their movement. Note basinward decrease in age of fault movement and Miocene-age fault displacement dominating study area.  Map showing salt bodies (stippled polygons) and selected physiographic  features (e.g., Rio Grande Embayment, Houston Embayment Salt Basin, and South Louisiana Salt Basin). Study area outlined by red polygon. Map highlighting oil (green) and gas (red) fields and CO2 point sources (black dots) in and around study area (red polygon), the offshore portion of Texas State Waters, approximately 16 km (10 mi) wide. Structure map of top of Anahuac Formation (base Miocene coarse clastics). Grid and map generated from 3,042 well log picks. Regional map of net sand thickness of Texas coast in capacity interval based on measurements from 1,009 well log raster (SP) curves.

An atlas of CO2 storage potential in the nearshore waters of the Texas coast – American Recovery and Reinvestment Act – “Gulf of Mexico Miocene CO2 site characterization mega-transect”

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An atlas of CO2 storage potential in the nearshore waters of the Texas coast – American Recovery and Reinvestment Act – “Gulf of Mexico Miocene CO2 site characterization mega-transect”

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