Degradable material assisted diversion or isolation

E - Fixed Constructions – 21 – B

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E21B 33/13 (2006.01) C09K 8/516 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2632442

A method for well treatment by forming a temporary plug in a fracture, a perforation, a wellbore, or more than one of these locations, in a well penetrating a subterranean formation is provided, in which the method of well treatment includes: injecting a slurry comprising a degradable material, allowing the degradable material to form a plug in a perforation, a fracture, or a wellbore in a well penetrating a formation; performing a downhole operation; and allowing the degradable material to degrade after a selected time such that the plug disappears.

L'invention concerne un procédé de traitement de puits consistant à former un bouchon temporaire dans une cassure, une perforation, un forage, ou dans plusieurs de ces emplacements, dans un puits traversant une formation souterraine, ledit procédé de traitement de puits comprenant les étapes suivantes : on injecte une boue comprenant un matériau dégradable, on laisse le matériau dégradable former un bouchon dans une perforation, une cassure ou un forage dans un puits traversant une formation ; on effectue les travaux en fond de puits ; et on laisse le matériau dégradable se dégrader après un temps sélectionné, de telle façon que le bouchon disparaisse.

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