A quantitative test of the electromagnetic propagation (EPT) log for residual oil determination
The Electromagnetic Propagation (EPT) log was tested for residual oil determination in a West Texas field which has been waterflooded since 1961. The field produces from a highly stringerized carbonate formation with average porosity, 10%. Formation water salinity now ranges from 20,000 to 200,000 ppm NaCl. Mud filtrate salinity was 170,000 ppm NaCl. Two hundred feet of pressure core were taken for laboratory measurement of residual oil volume and saturation. The EPT log data were analyzed by three different techniques: the published ''t/sub rhoo/ method'' and ''complex refractive index (CRIM) method'', and a variation of the CRIM method. The latter variation uses independent laboratory data on the complex dielectric permittivity of NaCl solutions to predict the EPT propagation time of the mud filtrate.
- Research Organization:
- Exxon Production Research Co., Houston, TX
- OSTI ID:
- 6604440
- Report Number(s):
- CONF-8406110-
- Resource Relation:
- Conference: 25. logging symposium, New Orleans, LA, USA, 12 Jun 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OIL WELLS
WATERFLOODING
PETROLEUM DEPOSITS
RESISTIVITY LOGGING
RESERVOIR ROCK
OIL SATURATION
CARBONATE ROCKS
DATA ANALYSIS
DIELECTRIC PROPERTIES
DISPLACEMENT FLUIDS
ELECTROMAGNETIC FIELDS
ENHANCED RECOVERY
INTERSTITIAL WATER
POROSITY
QUANTITATIVE CHEMICAL ANALYSIS
REFRACTIVITY
RESIDUAL PETROLEUM
SALINITY
SENSITIVITY
SODIUM CHLORIDES
TEXAS
WAVE PROPAGATION
WELL STIMULATION
ALKALI METAL COMPOUNDS
CHEMICAL ANALYSIS
CHLORIDES
CHLORINE COMPOUNDS
ELECTRIC LOGGING
ELECTRICAL PROPERTIES
ENERGY SOURCES
FEDERAL REGION VI
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GROUND WATER
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
MINERAL RESOURCES
NORTH AMERICA
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
RECOVERY
RESOURCES
ROCKS
SATURATION
SEDIMENTARY ROCKS
SODIUM COMPOUNDS
STIMULATION
USA
WATER
WELL LOGGING
WELLS
020300* - Petroleum- Drilling & Production
020200 - Petroleum- Reserves
Geology
& Exploration