The density/neutron porosity readings are nearly the same in both sandstones, so that suggests liquid hydrocarbon (oil). HOWEVER, in order to get some practice, I want you to evaluate the upper sandstone as a gas reservoir. Estimate the OGIP assuming a drainage area of 250 acres, a geothermal gradient of 1.2°F/100 ft, and a pore pressure gradient of 0.65 psi/ft.
The density/neutron porosity readings are nearly the same in both sandstones, so that suggests liquid hydrocarbon (oil). HOWEVER, in order to get some practice, I want you to evaluate the upper sandstone as a gas reservoir. Estimate the OGIP assuming a drainage area of 250 acres, a geothermal gradient of 1.2°F/100 ft, and a pore pressure gradient of 0.65 psi/ft.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:lo
GR
API
150
5000
5010
5020
5030
5040
5050
5060
5070
5080
5090
5100
0.2
0.2
0.2
ILD
ohm-m
ILM
ohm-m
LL8
ohm-m
2000
2000
2000
Transcribed Image Text:4. The density/neutron porosity readings are nearly the same in both sandstones, so that suggests liquid
hydrocarbon (oil). HOWEVER, in order to get some practice, I want you to evaluate the upper sandstone
as a gas reservoir. Estimate the OGIP assuming a drainage area of 250 acres, a geothermal gradient of
1.2°F/100 ft, and a pore pressure gradient of 0.65 psi/ft.
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