Drillable bridge plug

Details Drillable bridge plug Drillable bridge plug

E - Fixed Constructions

21

B

E21B 33/129 (2006.01) E21B 33/12 (2006.01) E21B 33/124 (2006.01)

Patent

CA 2413070

A method and apparatus (Fig.1) for use in a subterranean well described. The apparatus typically includes a subterranean plug including a mandrel having an outer surface and a non-circular cross-section and a packing element arranged about the mandrel, the packing element having a non-cylindrical inner surface matching the mandrel outer surface such that concentric rotation between the mandrel and the packing element is precluded. The apparatus may include slips having cavities to facilitate quick drill-out of the plug.

L'invention concerne un procédé et un appareil respectivement à mettre en oeuvre ou à utiliser dans un puits souterrain. Ledit appareil comprend habituellement un bouchon souterrain comprenant un mandrin présentant une surface extérieure et une section transversale non circulaire, ainsi qu'un élément de garnissage qui est disposé autour du mandrin et présente une surface intérieure non cylindrique qui est adaptée à la surface extérieure du mandrin de telle sorte qu'une rotation concentrique relative du mandrin et de cet élément de garnissage est empêchée. Cet appareil peut également comprendre des coins de retenue comportant des cavités pour faciliter l'enlèvement par forage du bouchon.

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