E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/26 (2006.01) E21B 43/00 (2006.01)
Patent
CA 2694511
A method of increasing the fracture resistance of a low permeability formation that includes emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid; and a solid particulate bridging material; increasing the pressure in the wellbore such that fractures are formed in the formation; allowing the settable carrier fluid to enter the fractures; bridging and scaling the mouths of the fractures to form a substantially impermeable bridge proximate the mouth of the fractures thereby strengthening the formation; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures is disclosed.
L'invention concerne un procédé d'augmentation de la résistance à la rupture d'une formation à faible perméabilité qui comprend l'emplacement d'un fluide de puits de forage dans un puits de forage à travers la formation à faible perméabilité, le fluide de puits de forage comprenant : un fluide de support fixable ; et un matériau de pont particulaire solide ; l'augmentation de la pression dans le puits de forage de sorte que des ruptures sont formées dans la formation ; le fait de laisser le fluide de support fixable entrer dans les ruptures ; le pontage et la fermeture des orifices des ruptures pour former un pont sensiblement imperméable à proximité de l'orifice des ruptures renforçant ainsi la formation ; et le maintien de la pression accrue pendant un certain temps suffisant pour fixer le fluide de support dans les ruptures.
Alberty Mark William
Aston Mark
Friedheim Jim
Sanders Mark
Sant Randall
Bp Corporation North America Inc.
M-I Llc
Smart & Biggar
LandOfFree
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