GCCC Presentations and Posters
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Item Above-zone pressure monitoring at Cranfield, MS(7th IEAGHG Monitoring Network Meeting, 2011-06-07) Mickel, Tip; Hovorka, SusanItem Across-fault pressure perturbation induced by CO2 injection(2010 AAPG Annual Convention & Exhibition, 2010-04-11) Change, Kyung Won; Meckel, Timothy A.; Hesse, Marc A.; Nicot, Jean-PhillipeGeological carbon sequestration aims at long-term storage of carbon dioxide in deep geological formations. To minimize the risk of leakage, the integrity of the geological seal has to be characterized carefully. The focus of this study is to simulate CO2 injection and observe the interaction of the CO2 and pressure evolution with a modeled fault intersecting the injection interval. Such features may be fairly common at a variety of scales in many sequestration reservoir targets, but their hydrologic and mechanical response to rapid pressure changes induced by CO2 injections requires investigation. We present numerical simulations from a commercial simulator (GEM from CMG). Preliminary numerical studies will determine the dependence of the CO2 and pressure evolution along and across the fault as a function of geological parameters. Additionally, the study is designed to complement and understand the field data being collected from the DOE-funded SECARB Phase 3 of the Cranfield CO2 injection project in the fall of 2009. A 12-level 3-component microseismic array has been deployed in a well approximately 1200 feet from a continuous CO2 injection well. A reservoir-scale fault intersects the reservoir between the injection and observation well. Available field data will be integrated with the flow model and analyzed to estimate the hydrologic properties of the adjacent fault. Pressure evolution predictions from the flow simulation will be critical for understanding the temporal distributions of any observed microseismic events detected. This project was funded thought the National Energy Technology Laboratory Regional Carbon Sequestration Partnership Program as part of the Southeast Regional Carbon Sequestration PartnershipItem Advancing global offshore CCS – Proposing a CSLF task force: International Initiative for CCS subsea (iCCSc)(5th CSLF Ministerial Meeting, Washington, D.C., 2013-11) Trevino, R. H.Item Application of Numerical Models to Development of the Frio Brine Storage Experiment(EPA Modeling Workshop, 2005-04-06) Hovorka, Susan D.Item Assessing impacts to groundwater from CO2-flooding of SACROC and Claytonville oil fields in West Texas(2006) Smyth, Rebecca C.; Holtz, Mark H.; Guillot, Stephen N.Comparison of groundwater above two Permian Basin oil fields (SACROC Unit and Claytonville Field) near Snyder, Texas should allow us to assess potential impacts of 30 years of CO2-injection. CO2-flooding for enhanced oil recovery (EOR) has been active at SACROC in Scurry County since 1972. Approximately 13.5 million tons per year (MtCO2/yr) are injected with withdrawal/recycling amounting to ~7MtCO2/yr. It is estimated that the site has accumulated more than 55MtCO2; however, no rigorous investigation of overlying groundwater has demonstrated that CO2 is trapped in the subsurface. Mineralogy of reservoir rocks at the Claytonville field in southwestern Fisher County is similar to SACROC. CO2-EOR is scheduled to begin at Claytonville Field in Fisher County in early 2007. Here we have the opportunity to characterize groundwater prior to CO2-injection and establish baseline conditions at Claytonville. Methods of this study will include: (1) examination of existing analyses of saline to fresh water samples collected within an eight-county area encompassing SACROC and Claytonville, (2) additional groundwater sampling for analysis of general chemistry plus field-measured pH, alkalinity, and temperature, stable isotopic ratios of hydrogen (D/H), oxygen (18O/16O), and carbon (13C/12C), and (3) geochemical equilibrium and flowpath modeling. Existing groundwater data are available from previous BEG studies, Texas Water Development Board, Kinder Morgan CO2 Company, and the U. S. Geological Survey. By examining these data we will identify regional groundwater variability and focus additional sampling efforts. The objective of this study is to look for potential impacts to shallow groundwater from deep CO2-injection. In the absence of conduit flow from depth, we don’t expect to see impacts to shallow groundwater, but methodology to demonstrate this to regulators needs to be established. This work is a subset of the Southwest Regional Partnership on Carbon Sequestration Phase 2studies funded by the Department of Energy (DOE) in cooperation with industry and government partners.Item Assessing potential impacts of CO2 leakage on shallow groundwater quality in the SECARB Phase III early test site using single-well push-pull tests(2012 AGU Fall Meeting, 2012-12-03) Yang, Changbing; Mickler, Pat; Reedy, Bob; Scanlon, BridgetItem Assessing potential impacts of CO2 upward migration on drinking groundwater quality at the SECARB Phase III early test site(2013 Carbon Storage RD Project Review Meeting, 2013-08-20) Yang, C.; Hovorka, S. D.; Trevino, R. H.Item Assessment of Geological Storage Capacity of the Southeastern U.S. for CO2 in Brines and Economic Use for EOR(SECARB Industry Briefing, 2006-01-18) Hovorka, Susan D.; Holtz, Mark H.; Smyth, Rebecca C.; Nunez Lopez, Vanessa; Kim, Eugene; Breton, Catherine L.; Scanlon, Bridget R.; Reedy, Reedy C.; Paine, Jeffrey; Tinker, Scott; Duncan, IanItem 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”(Carbon Storage R&D Project Review Meeting,, 2013-08) Trevino, R. H.; Wallace, K. J.; Taylor, J. L.; Carr, D.; Meckel, T. A.Item Borehole Seismic Monitoring of Injected CO2 at the Frio Site(American Geophysical Union Fall Meeting, 2005-12-05) Daley, T. M.; Myer, L. R.; Hoversten, G. M.; Peterson, J. E.The recently completed CO2 injection in the brine aquifer of the Frio Formation in southeast Texas provided an opportunity to test borehole seismic monitoring techniques. Designed tests included time-lapse VSP and crosswell surveys which investigated the detectability of CO2 with surface-to-borehole and borehole-to-borehole measurement. The VSP method uses surface seismic sources in conjunction with borehole sensors to measure the seismic properties (such as velocity and reflection strength) in the vicinity of the borehole. By moving the source location, seismic properties can be mapped spatially around the sensor well. A large change (about 70%) in VSP reflection amplitude from the Frio zone was observed. Because of the relatively small amount of CO2 injected (about 1600 tons), and the thin injection interval (about 6 m thick at 1500 m depth), CO2 detectability by the VSP method was not an assumed certainty. The initial result is therefore quite promising for use of the VSP method. The crosswell method measures wave propagation between wells and can tomographically image the interwell volume. The crosswell survey was conducted using the injection well (for sensors) and a nearby monitoring well (for the source) which is about 30 m offset. Crosswell source locations were centered on the injection interval. The crosswell sensors were also centered on the injection interval, which is the 6-7 m thick, upper C sand in the Frio formation which is at a depth of about 1500 m. Initial analysis of the crosswell data shows good quality P- and S-wave direct arrivals. Time-lapse tomographic imaging maps the changes in velocity (up to 1 km/s) due to the CO2 plume.Item Can carbon capture and geologic storage mitigate greenhouse gases?(Biennial Alberta-Texas Global Climate Forum, 2010-04-07) Trevino, Ramon H.Item Carbon sequestration Texas style!(University of Texas Carbon and Climate Change Conference, 2010-02-17) Tinker, Scott W.Item Case Study: Monitoring an EOR project to document sequestration value(2008) Hovorka, Susan D.Item CO2 storage, monitoring, verification, and accounting(Texas-Norway Symposium, 2013-11-19) Nunez-Lopez, VanessaItem CO2-EOR as geologic storage: Monitoring for permanence(NA 2050 Sequestration Working Group, 2013-10-08) Hovorka, Susan D.Item Comparison of single and multiphase tracer test results from the Frio CO2 Pilot Study, Dayton, Texas(National Energy Technology Laboratory Fourth Annual Conference on Carbon Capture and Sequestration, 2005-05-02) Trautz, R.; Freifeld, B.; Doughty, C.Item Considering faults in CCS(Outreach Working Group (OWG) for the regional carbon sequestration partnerships, teleconference, 2007-06-14) Meckel, Timothy A.Item Detection of anthropogenic CO2 in dilute groundwater: field observations and geochemical modeling of the Dockum aquifer at the SACROC oilfield, West Texas, USA(9th Annual Conference on Carbon Capture & Sequestration, 2010-05-10) Romanak, Katherine D.; Smyth, Rebecca; Yang, Changbing; Hovorka, SusanItem Detection of CO2 leakage in overlaying aquifers using time lapse compressibility monitoring(12th Annual Conference on Carbon Capture Utilization & Sequestration, 2013-05-13) Hosseini, Seyyed Abolfazi; Zeidouni, Mehdi
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