Propped fracture with high effective surface area

Details Propped fracture with high effective surface area Propped fracture with high effective surface area

E - Fixed Constructions

21

B

E21B 43/267 (2006.01) C09K 8/72 (2006.01) C09K 8/80 (2006.01) E21B 43/26 (2006.01) E21B 43/27 (2006.01)

Patent

CA 2514208

Propped fractures in formations from which fluids are produced are described that have wormholes extending out into the formations from the faces of the fractures at locations distant from boreholes. Methods are given for creating such propped fractures having wormholes in which either a closed propped fracture is formed and then the wormholes are formed, or the entire fracture and channel system is formed before the closure occurs.

Selon l'invention, on crée des fractures dans des formations, qui sont maintenues ouvertes au moyen d'un agent de soutènement et à partir desquelles sont produits des fluides. Lesdites fractures présentent des canaux (<= wormholes >=) s'étendant dans les formations à partir des faces des fractures à distance des trous de forage. L'invention concerne également des procédés pour créer de telles fractures, maintenues ouvertes au moyen d'un agent de soutènement, présentant des canaux (<= wormholes >=), procédés selon lesquels soit une fracture, maintenue ouverte au moyen d'un agent de soutènement puis fermée, est créée avant la formation desdits canaux, soit la totalité de la fracture et du système de canaux est formée avant la fermeture.

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