Method and device for cleaning and sealing a well

Details Method and device for cleaning and sealing a well Method and device for cleaning and sealing a well

E - Fixed Constructions

21

B

E21B 37/00 (2006.01) E21B 21/12 (2006.01) E21B 33/00 (2006.01)

Patent

CA 2693099

The present invention relates to a method for cleaning and possibly sealing a subsurface well. According to the method a multichannel tool string comprising an adapter on a first end of the tool string, a guide device at the second end of the tool string are run into the well, whereupon the guide device is activated in order to permit the well to be flushed by the supply of fluid through at least one of the channels in connection with the tool string and fluids and particles from the well are transported back to the surface through at least one other of the channels in connection with the tool string. The invention also relates to a device for cleaning and possibly sealing a subsurface well.

L'invention concerne un procédé de nettoyage et de scellement éventuel d'un puits souterrain. Selon le procédé, un train d'outils à plusieurs canaux pourvu d'un adaptateur à une première extrémité du train d'outils, d'un dispositif de guidage à la seconde extrémité du train d'outils, sont introduits dans le puits, suite à quoi le dispositif de guidage est activé afin de permettre au puits d'être rincé par l'alimentation en fluide à travers au moins un des canaux en connexion avec le train d'outils, et des fluides et des particules en provenance du puits sont ramenés à la surface par l'intermédiaire d'au moins un autre des canaux en connexion avec le train d'outils. L'invention concerne également un dispositif de nettoyage et de scellement éventuel d'un puits souterrain.

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