de Glossar

Oil extraction

Field of application for photometric oil trace measurement by means of fluorescence measurement.


The gas and water always found in petroleum deposits are separated from the crude oil on the spot. The maximum amount of crude oil the separated water may contain is normally limited by law. On offshore rigs, for example, the water discharged to the sea may contain no more than 50 mg/l as peak concentration or 30 mg/l as 24-hour average. These levels must be monitored by continuously operating, recording instruments. Because the Sigrist fluorescence photometer is built to stand up to the harsh service conditions in this industry, it is predestined for this application. In particular, the windowless free-fall flow cell keeps servicing to a minimum.

Oil/water separation by means of hydrocyclone and flotation tank

F - flotation tank
FL - fluorescence measurement
H - hydrocyclone
R - raw water
RO - crude oil
W - water

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