Optics: measuring and testing – Oil testing
Reexamination Certificate
2005-02-01
2005-02-01
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
Oil testing
Reexamination Certificate
active
06850317
ABSTRACT:
Apparatus and methods for measuring oil flow velocity in a well are provided which utilize fluorescence quenching. A marker which quenches the natural fluorescence of crude oil is chosen and injected into the oil flow at a first location. At a second location, the oil flow is subjected to light at a wavelength which will cause oil to naturally fluoresce. The fluorescence signal is detected at the second location by a sensing probe. The time that it takes for the quenching marker to move from the first location to the second location is measured by sensing a decrease in fluorescence due to the quencher. Fluid velocity is determined by dividing the distance between the marker-ejection point and the optical probe position by the time it took the marker to move that distance.
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Canuel Clelia
Chen Felix
Dussan V Elizabeth B.
Groenzin Henning
McKeon Donald Charles
Batzer William B.
Gordon David P.
Ryberg John J.
Schlumberger Technology Corporation
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