Control of particulate flowback in subterranean wells

Details Control of particulate flowback in subterranean wells Control of particulate flowback in subterranean wells

E - Fixed Constructions

21

B

E21B 43/16 (2006.01) E21B 21/00 (2006.01) E21B 43/02 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2188098

The addition of fibrous mixtures in intimate mixtures with particulates for fracturing and gravel packing decreases or eliminates the undesirable flowback of proppant or formation fines while stabilizing the sand pack and lowering the demand for high polymer loadings in the placement fluids. Fibers are useful for forming a porous pack in the subterranean formation. In some cases, channels or fingers of void spaces with reduced concentrations of proppant may be introduced into the proppant pack.

L'addition de mélanges fibreux à des mélanges intimes avec des particules pour la fracturation et le filtre de graviers réduit ou élimine le reflux indésirable de l'agent de soutènement ou de fines du gisement tout en stabilisant le bouchon de sable et en abaissant la demande en fortes charges polymériques dans les fluides. Les fibres sont utiles pour la formation d'un bloc poreux dans le gisement souterrain. Dans certains cas, des canaux ou des doigts de volume libre, renfermant des concentrations réduites d'agent de soutènement, peuvent être introduites dans le garnissage de soutènement.

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