Method for determining oil content of an underground formation u

Details Method for determining oil content of an underground formation u Method for determining oil content of an underground formation u

1996-04-26

1997-11-11

Fields, Carolyn E.

Radiant energy

Geological testing or irradiation

With sampling

250301, 2504611, G01V 904, G01N 2164

Patent

active

056867247

ABSTRACT:
Methods are disclosed for evaluating wet cutting from a well borehole to determine the hydrocarbon content of the earth formations penetrated by the well borehole. The wet cuttings to be measured are mixed with a polar hydrocarbon solvent which has both hydrophilic and hydrophilic properties. The solution of the solvent and cutting is filtered and then its emission (fluorescence) spectrum is measured by irradiating it with ultraviolet radiation excitation at wavelengths at which most petroleum compounds fluoresce. The hydrocarbon content of the sample wet cuttings is then determined by comparing its fluorescence emission to the emission fluorescence of known samples.

REFERENCES:
patent: 2367664 (1945-01-01), Campbell et al.
patent: 2431487 (1947-11-01), Larsen
patent: 4977319 (1990-12-01), Supernaw

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