Method for determining oil content of an underground formation
US4977319A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Feb 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a method of evaluating a sample of an underground formation to determine the hydrocarbon content of any hydrocarbons present in the formation. It involves the steps of solvating a known volume of a sample in a known volume of a solvent which will solvate hydrocarbons, quantitatively measuring with a fluorometer the emission fluorescence below about 400 nanometers of the solvated sample at an excitation wavelength at which most petroleum compounds fluorescence, and determining the hydrocarbon content of any hydrocarbon present in the sample by comparing the emission fluorescence of said solvated sample to previous correlations. The previous correlations are drawn between known hydrocarbon contents of samples and the emission fluorescence of the known samples in said solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.