Check out these upcoming events.
Roving the Red Planet: A Field Geologist Explores Gale Crater
Speaker: Dr. Rebecca Williams, Planetary Science Institute
Date: September 24, 2013
Night at the new Natural History Museum of Utah
Join us for a private party at this new, extraordinary museum. The night will include food and beverages, entertainment, private access to all museum galleries, and behind-the-scenes tours of the collections area.
MORE ABOUT THE UTAH GEOLOGICAL ASSOCIATION
aapg.org
Geologic intervals that may have looked a bit ho-hum when pierced by the drill bit on its way to the Real Target can, on second look, yield some pleasant surprises.
The Uteland Butte Member of the Eocene Green River Formation in the Uinta Basin in Utah is one of these.
It’s the basal member of the Green River, above the Upper Paleocene to Lower Eocene Wasatch Formation, which is predominantly a sandstone with red, green and gray shales deposited in a fluvial setting.
In contrast, the Uteland Butte is indicative of a lacustrine environment and is mainly limestone, dolomite, organic rich calcareous mudstone and siltstone, with some thin sandstones, according to AAPG member Michael Vanden Berg.
Michael D. Vanden Berg, Utah Geological Survey
Presented at the AAPG Annual Conference, Denver, CO, June 2009
ABSTRACT
Due to the recent increase in crude oil prices and concerns over diminishing conventional reserves, the Utah Geological Survey has reexamined the Uinta Basin’s oil shale resource, primarily in the Mahogany zone of the Green River Formation. We created conversion equations by correlating available Fischer assays with corresponding density and sonic measurements as a way to predict oil yield from geophysical logs. In addition to the core-based Fischer assays obtained from 107 wells drilled specifically for oil shale, 186 oil and gas wells with oil yields calculated from digitized bulk density or sonic logs were used to create a basin-wide picture of the oil shale resource in the Uinta Basin. These widespread data were used to map oil shale thickness and richness and create isopach maps delineating oil yields of 15, 25, 35, and 50 gallons of shale oil per ton (GPT) of rock. From these isopach maps, new basin-wide resource numbers were calculated for each richness grade.
The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.