May be of interest to anyone in the Denver-metro area interested in USGS research...

More info on the Paradox Basin : https://energy.usgs.gov/OilGas/AssessmentsData/NationalOilGasAssessment/USBasinSummaries.aspx?provcode=5021

Enjoy the day,

Emily C. Wild
Librarian (Physical Scientist)
U.S. Geological Survey, Denver Library
Denver Federal Center
ph: (303) 236-1003
[log in to unmask]

USGS Library: http://library.usgs.gov

Staff Page: https://www.usgs.gov/staff-profiles/emily-wild

---------- Forwarded message ----------
From: SIPES Denver Chapter
Date: Tue, Jun 13, 2017 at 10:19 AM
Subject: S.I.P.E.S. June 2017 Meeting Announcement
To: [log in to unmask]

Society of Independent Professional Earth Scientists 
THURSDAY - June 22, 2017
Paul G. Lillis

The Chuar Petroleum System, Arizona and Utah”
All participants MUST RSVP!!

RSVP by 11:30 a.m. Monday June 19th
call 303-730-2967

When: Thursday, June 22, 2017 ~ 11:30 a.m. - 1:30 p.m.
Where: Wynkoop Brewery - 1634 18th Street, Denver, CO 80202 

Cost Structure:
        - Members $20 (Presentation & Meal)
        - Non-members $25 (Presentation & Meal)
        - Walk-in $5 (Presentation only)

Cash or Check gladly accepted, regretfully no Credit Cards…
RSVP by 11:30 a.m. Monday June 19th
**Please feel free to share this with any friends and colleagues who
might be interested**

The Chuar Petroleum System, Arizona and Utah”
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source rocks, and in particular the Walcott Member of the Kwagunt Formation. Industry interest in a Chuar oil play led to several exploratory wells drilled in the 1990s in southern Utah and northern Arizona to test the overlying Cambrian Tapeats Sandstone reservoir, and confirm the existence of the Chuar in subcrop. USGS geochemical analyses of Tapeats oil shows in two wells have been tentatively correlated to Chuar bitumen extracts. Distribution of the Chuar in the subsurface is poorly constrained with only five well penetrations, but recently published gravity/aeromagnetic interpretations provide further insight into the Chuar subcrop distribution. The Chuar petroleum system was reexamined as part of the USGS Paradox Basin resource assessment in 2011. A map was constructed to delineate the Chuar petroleum system that encompasses the projected Chuar source rock distribution and all oil shows in the Tapeats Sandstone, assuming that the Chuar is the most likely source for such oil shows. Two hypothetical plays were recognized but not assessed: (1) a conventional play with a Chuar source and Tapeats reservoir, and (2) an unconventional play with a Chuar source and reservoir. The conventional play has been discouraging because most surface structures have been tested by drilling with minimal petroleum shows, and there is some evidence that petroleum may have been flushed by CO2 from Tertiary volcanism. The unconventional play is untested and remains promising even though the subcrop distribution of source facies within the Chuar Group is largely unknown.
Our Presenter
Paul G. Lillis
Paul Lillis is a petroleum geochemist with the Central Energy Resources Science Center of the U.S. Geological Survey (USGS) in Denver, Colorado. He received a B.A. in geology from San Jose State University, an M.S. in geology from San Diego State University, and a Ph.D. in geochemistry from Colorado School of Mines. He was a petroleum exploration geologist with Atlantic Richfield for eight years (1978 to 1986) in Colorado, California, and Texas, and has been with the USGS in Denver since 1987. His research focuses on the application of petroleum and source-rock geochemistry to identifying, characterizing, and mapping petroleum systems.
Copyright © 2017 SIPES, All rights reserved. 
SIPES Denver Chapter 

Our mailing address is: 
PO Box 3786
CentennialCO 80161