Complex dielectric constant well logging means and method for determining the water saturation and the water resistivity of an earth formation
This patent describes a well logging system for determining the water saturation of an earth formation and the resistivity of the water comprising: means for transmitting electromagnetic energy at a frequency lying within a range of frequencies from 10 MHz to 200 MHz into the earth formation from a borehole traversing the earth formation, means for receiving electromagnetic energies at two locations in the borehole from the earth formation, means for deriving a complex dielectric constant from the received electromagnetic energies, and means for deriving the water resistivity and the water saturation of the earth formation in accordance with a predetermined porosity of the earth formation and with the real and imaginary parts of the derived complex dielectric constant.
- Assignee:
- Texaco, Inc., White Plains, NY
- Patent Number(s):
- US 4774471
- OSTI ID:
- 6690152
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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Geology
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03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
DIELECTRIC PROPERTIES
ELECTRIC LOGGING
ELECTRICAL PROPERTIES
ELECTROMAGNETIC FIELDS
EQUIPMENT
GEOLOGIC DEPOSITS
GROUND WATER
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
MINERAL RESOURCES
NATURAL GAS DEPOSITS
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
RESERVOIR ROCK
RESOURCES
SATURATION
WATER
WATER SATURATION
WELL LOGGING
WELL LOGGING EQUIPMENT