Laser-enhanced oil correlation system

Details Laser-enhanced oil correlation system Laser-enhanced oil correlation system

1990-02-23

1991-09-17

Hannaher, Constantine

Radiant energy

Methods of determining oil presence, contamination or...

250255, 2504591, 2504611, G01N 2164

Patent

active

050497383

ABSTRACT:
Method and apparatus for precise oil correlation using oil-filled fluid inclusions to form signature plots of fluorescence excitation versus emission versus intensity data. The apparatus uses a tunable light source energized periodically through a given series of wavelengths as directed through a microscope to a fluid inclusion to excite fluorescence. Subsequent fluorescence emission is detected by a monochromator/photomultiplier combination for input to a data acquisition system that processes the data and provides requisite fluorescence output plots indicating more particularly the nature of the fluid inclusion matter, i.e., 3-D fluorescence spectra indicative of the oil. The quality of the oil in terms of API.degree. gravity can also be determined by time-resolution fluorescence spectroscopy to determine fluorescence lifetimes. Finally, program-controlled processing functions to identify and classify selected oil material responses relative to data compiled for a preestablished library of different responses.

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patent: 4609821 (1986-09-01), Summers
patent: 4814614 (1989-03-01), Tsui
Raymond M. Measures, Wayne R. Houston and David G. Stephenson; "Analyzing fluorescence decay." Laser Focus (Nov. 1974) pp. 49-52.
Article entitled "The application of fluid inclusions to migration of oil and diagenesis in petroleum reservoirs", Roger K. McLimans, as published in Applied Geochemistry, vol. 2; Nos. 5/6, Sep./Dec. 1987.
Article entitled "Reservoir diagenesis and oil migration: Middle Jurassic Great Oolite Limestone, Wealden Basin"; Southern England, R. K. McLimans and P. E. Videtich; published in Petroleum Geology of North West Europe, vol. 1.

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