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US 10,241,101 B2Granted
Method and apparatus for determining permittivity of rock matrix
AssigneeSchlumberger Technology Corporation
InventorsNikita Seleznev, Kamilla Fellah, Bastien Fournie
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Abstract
A method for determining permittivity of a rock formation mineral matrix includes measuring a permittivity of a sample of the rock. A fractional volume of pore space in the sample is determined. A mixing law and a permittivity of a fluid filling the pore space are used to determine the permittivity of the formation mineral matrix from the measured permittivity.
Claims21
A method for determining permittivity of a rock formation mineral matrix, comprising:
- saturating a known volume of a sample obtained from well logging of the rock formation with at least two different dielectric materials having different permittivities, wherein the sample comprises a powder of the rock formation mineral matrix, wherein the saturated sample has a known total volume;
- measuring a permittivity of the sample using a dielectric resonator;
- determining a fractional volume of pore space in the sample as a part of well logging analysis;
- and
- using a mixing law and the permittivities of the at least two dielectric materials to determine the permittivity of the rock formation mineral matrix from the measured permittivity of the sample, wherein the permittivity of the rock formation mineral matrix at least depends on the permittivity of the sample, the fraction volume of the pore space in the sample, and the permittivities of the at least two dielectric materials.
2 more elements
Dependencies are inferred from the claim text.