Inhibiting formation face failure in oil and gas wells

Details Inhibiting formation face failure in oil and gas wells Inhibiting formation face failure in oil and gas wells

E - Fixed Constructions

21

B

E21B 43/267 (2006.01) E21B 43/01 (2006.01)

Patent

CA 2646849

A technique includes running a string into a well bore and inhibiting formation face failure. The well bore extends at least partially through a non-producing layer and a hydrocarbon formation layer. The inhibiting of the formation face failure includes communicating a proppant into the well bore via the string until a well bore pressure exceeds a first formation stress of the non-producing layer, which causes a fracture to form in the non-producing layer, and communicating the proppant into the fracture to create a barrier layer.

Technique comprenant la descente d'une rame dans un puits de forage et consistant à pallier aux fractures rencontrées dans une formation. Le puis traverse au moins partiellement une couche non productive et une couche de formation d'hydrocarbures. La palliation aux fractures dans une formation consiste à couler un agent de soutènement dans le puits au moyen de la rame jusqu'à ce que la pression au puits dépasse les forces de contrainte d'une première formation de la couche non productive, ce qui provoque la formation d'une fracture dans la couche non productive; puis un agent de soutènement est coulé dans la fracture pour créer une couche barrière.

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