Method of perforating for effective sand plug placement in...

Details Method of perforating for effective sand plug placement in... Method of perforating for effective sand plug placement in...

E - Fixed Constructions

21

B

E21B 43/14 (2006.01) E21B 43/25 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2719562

Methods of isolating portions of a subterranean formation are disclosed. The planned settled height of a sand plug in a well bore adjacent a first zone of the subterranean formation is determined. The first zone is then perforated using a hydrajetting tool which is oriented so as to form perforations below the planned settled height of the sand plug.

L'invention concerne des procédés destinés à isoler des parties dune formation souterraine. La hauteur stabilisée prévue dun bouchon de sable dans un puits de forage au voisinage dune première zone de la formation souterraine est déterminée. La première zone est alors perforée à laide dun outil à hydrojet orienté de façon à former des perforations au-dessous de la hauteur stabilisée prévue du bouchon de sable.

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