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Soft Rock Seminar: Julio Leva
Start:December 3, 2012 at 12:00 pm
End:
December 3, 2012 at 1:00 pm
Location:
JGB 3.222
Contact:
Rattanaporn Fongngern (Jah), rattanapornf@utexas.edu
BEG Friday Seminar Series: Dr. Osareni Ogiesoba, BEG
Start:December 7, 2012 at 9:00 am
End:
December 7, 2012 at 10:00 am
Location:
J.J. Pickle Research Campus, Bldg. 130, room #1.202
Video Streaming: Not available for this seminar
SEISMIC INVERSION FOR SHALE GAS/OIL IN THE AUSTIN CHALK AND EAGLE FORD SHALE IN A SUBMARINE VOLCANIC TERRAIN, MAVERICK BASIN, SOUTH TEXAS
Osareni (Chris) Ogiesoba
Bureau of Economic Geology (STARR)
Hydrocarbon exploration in the Austin Chalk began in 1916 with the discovery of hydrocarbon traps located in and around volcanic centers (serpentine plugs) encased by Austin Chalk. Owing to the occurrence of hydrocarbons around these serpentine plugs, exploration efforts were focused on identifying surface as well as subsurface locations of volcanic centers within the Austin Chalk. However, with the realization of the existence of fault-related, fractured reservoirs within the Austin Chalk in the 1980’s, fault zones became the main target of exploration—and the drilling spree started. To date, more than 2,000 horizontal wells have been drilled within the Austin Chalk.
Although some of these wells were successful, many others failed either because they did not penetrate hydrocarbon sweet spots, or hydrocarbon-source-rock distribution within and outside the Austin Chalk was unknown. In this project, seismic inversion studies was conducted by combining seismic data with wireline logs to determine sweet spots and predict resistivity distribution (using the deep-induction log) within the Austin Chalk and Eagle Ford Shale in South Texas.
Results show that >90% of productive zones are in the lower part of the Austin Chalk and are associated with Eagle Ford vertical-subvertical en echelon faults, suggesting hydrocarbon migration from the Eagle Ford Shale. Furthermore, the lower Austin Chalk and upper Eagle Ford Shale together appear to constitute a continuous (unconventional) hydrocarbon play.
In addition, local accumulations within the Austin Chalk may be related to Austin TOC-rich zones or migration from the Eagle Ford through fractures. The quality-factor attribute (Q) can serve as a tool for detecting high-water saturated zones. Although Q was not selected as one of the primary attributes for predicting resistivity, it nevertheless can serve as a good reconnaissance tool for predicting resistivity and brittle zones. Wells that have high water production do so because the water-bearing middle Austin Chalk that sits on the downthrown side of Eagle Ford regional faults constitutes a large section of the horizontal well, as evidenced by the Q attribute. Finally, based on the seismic stratigraphic positions of identified submarine volcanic mounds within the Austin Chalk, volcanic activity probably continued up middle Campanian time.
JSG Fall Graduation
Start:December 8, 2012 at 1:00 pm
End:
December 8, 2012 at 3:00 pm
Location:
McCullough Theatre (in the Performing Arts Complex)
Contact:
Erin Negron, erin.negron@jsg.utexas.edu, 512-471-5870
View Event
Event: The Jackson School of Geosciences 2012 Fall Commencement Ceremony and Reception
Speaker: Brewster McCracken
Reception: Immediately following ceremony, at Holland Family Student Center (JGB), refreshments will be served
UTIG Seminar Series: James Thompson, BEGDecember, 05 2025Time: 10:30 AM - 11:30 AMLocation: PRC 196/ROC 1.603 Speaker: James Thompson, Research Assistant Professor, Bureau of Economic Geology, University of Texas at Austin Host: Danielle Touma Title: High-Resolution Infrared Remote Sensing of Geohazards from Volcanoes to Wildfires Abstract: How can recent improvements in the spatial and spectral resolutions of infrared remote sensing datasets enhance our ability to observe and analyze geological hazards (volcanoes and wildfires)? Will a more accurate quantification of thermodynamic processes across scales (mm to km) improve our interpretations of pre-, syn-, and post-hazard influences and feedbacks? Over the last few decades, resolution improvements of infrared remote sensing data have enabled observations at smaller scales previously unattainable, providing the detail necessary to advance hazard models and surface process interpretations (e.g., lava flow propagation dynamics and wildfire front convective dynamics). These improvements lead to a better understanding of hazard feedbacks and risk assessments for both populations and ecosystems. For our volcanic work, we show how new ground and airborne (both Crewed and Uncrewed Aerial Systems) multispectral thermal infrared instruments are used to observe subtle variations in heat flux and crustal development in lava flows, which were later used to improve runout distance models and more accurately predict risks to local populations. These systems are also deployed to wildfires to characterize the dynamics of fire fronts to increase understanding of heat flux, which can significantly influence spreading rates and the overall restoration of the landscape. Further, data from infrared instruments are used to improve estimations of gas fluxes from both volcanoes and wildfires, with implications for localized microclimate variability and health impacts on populations. Finally, these high-resolution observations are both (1) scaled to satellite observations to provide more wholistic interpretations of the hazards and (2) compared with other observations (e.g., soil physics, meteorology, flora characteristics, morphology) to identify positive and negative feedbacks within the terrestrial processes. The results provide a discernable increase in accuracy of thermodynamic models and insights into thermal and gas fluxes influences on landscape conditions. |
Bureau of Economic Geology Seminar SeriesDecember, 05 2025Time: 1:00 PM - 2:00 PMLocation: BEG VR Room 1.116C Microstructural analysis of sedimentary and volcanic rocks presented In Person by Dr. Robert Reed Research Scientist Associate V, BEG |
UTIG Seminar Series: Student AGU Practice TalksDecember, 12 2025Time: 10:30 AM - 11:30 AMLocation: PRC 196/ROC 1.603 Each year, the week before AGU’s Fall Meeting, we invite UTIG student researchers to practice their AGU talks. Each presenter will be given 11 minutes, as per AGU’s oral presentation for 2024, followed by a few minutes for Q&A and feedback. The details of this year’s speakers are currently underway. Come back to this page for new updates. |
Bureau of Economic Geology Seminar SeriesDecember, 12 2025Time: 1:00 PM - 2:00 PMLocation: BEG VR Room 1.116C Environmental and aqueous geochemistry; Critical mineral presented In Person by Dr. Daniel Alessi Professor, Department of Earth and Planetary Sciences Jackson School of Geosciences Getty Oil Company Centennial Chair in Geological Sciences (Holder) |