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U.S. Department of Energy
Office of Scientific and Technical Information

Method for identifying complex lithologies in a subsurface formation

Patent ·
OSTI ID:6187049
A method of logging a subsurface formation surrounding a borehole includes the recording of an induced polarization log, the recording of a nuclear log of delayed gamma-rays from the activation of aluminum in the formation, and the recording of a nuclear log of natural gamma-rays from potassium in the formation. The induced polarization log and the nuclear logs are combined to identify the composition of the lithology of the subsurface formation.
Assignee:
Mobil Oil Corporation
Patent Number(s):
US 4467642
OSTI ID:
6187049
Country of Publication:
United States
Language:
English