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Title: Method and apparatus for determining shaliness and oil saturations in earth formations using induced polarization in the frequency domain

Patent ·
OSTI ID:6616877
;

An apparatus is disclosed for borehole measurements of the induced polarization of earth formations. The apparatus consists of an induced polarization logger capable of measuring both in-phase and quadrature conductivities in the frequency domain. A method is described which uses these measurements to determine cation exchange capacity per unit pore volume, Qv, brine conductivity, Cw, and oil and water saturations, So and Sw, in shaly sands.

Assignee:
Shell Oil Co
Patent Number(s):
US 4359687
OSTI ID:
6616877
Resource Relation:
Patent File Date: Filed date 25 Jan 1980; Other Information: PAT-APPL-115472
Country of Publication:
United States
Language:
English

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Related Subjects

04 OIL SHALES AND TAR SANDS
INDUCED POLARIZATION LOGGING
ELECTRONIC EQUIPMENT
ANALOG-TO-DIGITAL CONVERTERS
BOREHOLES
LEAD
OIL SANDS
PLATINUM
PROBES
SUBSTRATES
WELL LOGGING
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CAVITIES
ELECTRIC LOGGING
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
MATERIALS
METALS
PLATINUM METALS
TRANSITION ELEMENTS
040200* - Oil Shales & Tar Sands- Reserves
Geology
& Exploration