Method for wax removal and measurement of wax thickness

Details Method for wax removal and measurement of wax thickness Method for wax removal and measurement of wax thickness

E - Fixed Constructions

21

B

E21B 37/00 (2006.01) B08B 9/027 (2006.01)

Patent

CA 2703407

The present invention relates to Method for removal of wax deposited on an inner wall in contact with a fluid stream, the method comprises cooling the inner wall and the fluid stream to a temperature of or below the wax appearance temperature, which will allow for dissolved wax to precipitate on the inner wall, wherein the method further comprises the heating of the inner wall for a short period of time to release the deposited wax from the surface of the inner wall, mainly in the form of solid parts. Further the invention relates to a method of determing the thickness of wax deposits in a pipe section by computing the temperatures obtained upstream and downstream in the said pipe section, before and after applying at heat pulse.

La présente invention concerne un procédé de retrait de cire déposée sur une paroi interne en contact avec un courant de fluide. Le procédé comprend le refroidissement de la paroi interne et du courant de fluide à une température inférieure ou égale à la température apparente de la cire, ce qui permettra à la cire dissoute de se précipiter sur la paroi interne. Le procédé comprend en outre le chauffage de la paroi interne sur une période courte pour libérer la cire déposée de la surface de la paroi interne, principalement sous la forme de parties solides. L'invention concerne également un procédé de mesure de l'épaisseur des dépôts de cire dans une section de conduite par calcul des températures obtenues en amont et en aval dans ladite section, avant et après application d'une impulsion thermique.

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