Fluorescence sensing apparatus for determining presence of nativ

Details Fluorescence sensing apparatus for determining presence of nativ Fluorescence sensing apparatus for determining presence of nativ

1990-05-17

1992-01-28

Hannaher, Constantine

Radiant energy

Geological testing or irradiation

25022723, 250255, 250256, 250301, 2504611, G01V 502, G01N 2164

Patent

active

050846175

ABSTRACT:
A monitoring device for determining presence of native hydrocarbons downward along a drilled borehole by analyzing upcoming drilling mud returning to the reserve pit. The device includes a short pulse laser of selected output wavelength disposed at a remote location to couple output light into a fiber optic cable that leads to a position at the reserve pit viewing the returning drill mud. The device employs optical coupling to project any hydrocarbon fluorescence light for return along the fiber optic cable to the remote position for reflection through a monochromator, and the fluorescence light is processed through a photomultiplier tube and data acquisition system to derive charcteristic decay lifetime signatures to distinguish between native hydrocarbons and any lighter oils contained in the drilling mud.

REFERENCES:
patent: 2591737 (1952-04-01), Souther, Jr.
patent: 4149805 (1979-04-01), Chew, III
patent: 4266878 (1981-05-01), Auer
patent: 4609821 (1986-09-01), Summers
patent: 4616133 (1986-10-01), Senftle
patent: 4652143 (1987-03-01), Wickersheim et al.
patent: 4662749 (1987-05-01), Hatton et al.
patent: 4672218 (1987-06-01), Chrisman et al.
patent: 4686372 (1987-08-01), Satoru et al.
patent: 4692611 (1987-09-01), Hoogenboom
patent: 4707134 (1987-11-01), McLachlan et al.
patent: 4708494 (1987-11-01), Kleinerman
patent: 4945249 (1990-07-01), Grant et al.
patent: 4999504 (1991-03-01), Braunuch et al.
Raymond M. Measures, Wayne R. Houston and David G. Stephenson, "Analyzing Fluorescence Decay", Laser Focus (Nov. 1974), pp. 49-52.

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