Method for determining the amount of oil in a sponge core

Patent · Tue Nov 29 00:00:00 EST 1988

OSTI ID:6339667

DiFoggio, R; Ellington, W E; Dangayach, K C.B.

For use in determining the oil saturation of an earth formation by means of sponge coring, a method is described for extracting oil from the sponge without substantially affecting the sponge. The method consists of: (a) extracting the oil from the sponge by dissolving the oil in a predetermined quantity of a solvent selected from the group consisting of cycloalkanes, ethers, and freons, and (b) determining the amount of oil dissolved into the solvent by: (i) preparing a standard solution of oil in another quantity of the selected solvent, and (ii) comparing the concentration of the oil extracted from the sponge in the predetermined quantity of solvent with the concentration of the oil in the standard solution, using supercritical fluid chromatography to determine the concentrations of the oil.

• Assignee: Shell Oil Co., Houston, TX
• Patent Number(s): US 4787983
• OSTI ID: 6339667
• Resource Relation: Patent File Date: Filed date 17 Nov 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM
SOLVENT EXTRACTION
PETROLEUM DEPOSITS
GEOCHEMISTRY
RESERVOIR ROCK
OIL SATURATION
ADSORPTION
ALKANES
CHROMATOGRAPHY
DISSOLUTION
DRILL CORES
ETHERS
EXPLORATION
FREONS
QUANTITATIVE CHEMICAL ANALYSIS
REMOVAL
RESERVOIR FLUIDS
CHEMICAL ANALYSIS
CHEMISTRY
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
MINERAL RESOURCES
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RESOURCES
SATURATION
SEPARATION PROCESSES
SORPTION
020200* - Petroleum- Reserves
Geology
& Exploration