Slickline conveyed tubular scraper system

Details Slickline conveyed tubular scraper system Slickline conveyed tubular scraper system

E - Fixed Constructions

21

B

E21B 37/02 (2006.01) E21B 23/01 (2006.01) E21B 23/14 (2006.01) E21B 33/072 (2006.01)

Patent

CA 2758493

A downhole tubular scraper is run in on slickline with an on board power supply. It features counter-rotating scrapers without an anchor in one embodiment or an anchor with single rotating scrapers. The scraper is selectively operated to conserve power in the power supply. A drive system uses a single driver to obtain counter-rotating motion in the scrapers.

Un racloir tubulaire de fond de trou est déplacé sur une ligne de glissement à l'aide d'une alimentation embarquée. Il est équipé de racloirs contrarotatifs sans dispositif d'ancrage dans un premier mode de réalisation ou d'un dispositif d'ancrage pourvu de racloirs ayant la même rotation. Le racloir est sélectivement actionné pour conserver l'énergie dans l'alimentation. Un système d'entraînement utilise un seul dispositif d'entraînement afin d'obtenir un mouvement contrarotatif des racloirs.

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