Short Course: Depositional Environments, Diagenesis, and Hydrothermal Alteration of the Mississippian Leadville Limestone Reservoir, Paradox Basin, Utah: A Core Workshop

Friday, May 23, 2008 8:30 am MT - 5:00 pm MT
Lakewood, CO


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May 22, 2008
$150.00
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Event Details

Instructors: David E. Eby (Eby Petrography & Consulting, Inc.) and Thomas C. Chidsey, Jr. (Utah Geological Survey)

 

The fee includes food at breaks, workbook and PDH certificate.

 

The Mississippian Leadville Limestone has produced over 53 million barrels of oil and 845 BCF of gas in the Paradox fold and fault belt of the Paradox Basin, Utah and Colorado. Solution-enlarged fractures and autobreccias are common. Late-replacement and saddle dolomites, as well as brecciation and sulfide mineralization, developed from hydrothermal alteration that greatly improved reservoir quality. The result can be the formation of large, diagenetic type hydrocarbon traps. The reservoir characteristics, particularly diagenetic overprinting and history, can be applied regionally to other fields and exploration trends in the Paradox Basin and shallow-shelf carbonate reservoirs elsewhere. Representative core from Utah’s Lisbon field will be examined. All core displayed will be presented within the context of the regional paleogeographic setting. The core workshop will be organized into topical modules with participants performing a series of exercises using core, geophysical well logs, and photomicrographs from thin sections.These modules include describing reservoir vs. non-reservoir lithofacies; determining diagenesis, hydrothermal alteration, and porosity from core; recognizing barriers and baffles to fluid flow; correlating core to geophysical welllogs; and identifying potential completion zones.

 
 
Date, Time, and Location
Date
Friday, May 23, 2008

Time
8:30 am MT - 5:00 pm MT

Location
USGS Core Research Center, Denver Federal Center
Lakewood, CO

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