Film coated particles for oil exploitation and oil...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 8/80 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2760510

Film coated particles for oil exploitation, fracturing proppants comprising the film coated particles and oil exploitation method using the fracturing proppants are disclosed. The film coated particles comprise skeleton aggregates and film which is oil- permeable and water-blocking covering the surface of the skeleton aggregates. The film coated quartz sand and the fracturing proppants are oil-permeable and water-blocking in conventional atmospheric pressure conditions, and the resistance to oil permeation is remarkably lower than the resistance to water permeation in pressurized conditions. Thereby in the oil exploitation industry, water output is reduced effectively and oil yield is increased.

La présente invention a pour objet des particules enrobées d'un film pour l'exploitation pétrolière, des agents de soutènement utilisés pour la fracturation comprenant les particules enrobées d'un film et un procédé d'exploitation pétrolière utilisant les agents de soutènement utilisés pour la fracturation. Les particules enrobées d'un film comprennent des agrégats de squelettes et un film qui est perméable au pétrole et recouvrant de manière à bloquer l'eau la surface des agrégats de squelettes. Le sable de quartz enrobé d'un film et les agents de soutènement utilisés pour la fracturation sont perméables au pétrole et bloquent l'eau dans des conditions de pression atmosphérique classiques, et la résistance à la perméabilité au pétrole est remarquablement inférieure à la résistance à la perméabilité à l'eau dans des conditions sous pression. Ainsi, dans l'industrie de l'exploitation pétrolière, le débit d'eau est réduit de manière efficace et le rendement de pétrole est augmenté.

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