Methods of using polymer-coated particulates

Details Methods of using polymer-coated particulates Methods of using polymer-coated particulates

E - Fixed Constructions

21

B

E21B 43/267 (2006.01) C09K 8/70 (2006.01) C09K 8/80 (2006.01)

Patent

CA 2601122

The present invention relates to methods of using polymer-coated particulates in subterranean operations such as gravel packing, frac-packing, and hydraulic fracturing. One embodiment of the present invention provides methods of treating a subterranean formation comprising providing a treatment fluid comprising particulates at least partially coated with a polymer, wherein the polymer is deposited on the particulates by at least partially coating the particulates with a polymer solution comprising the polymer and a solvent and then exposing the particulates to an aqueous medium such that the solvent substantially dissociates from the polymer solution and such that the polymer substantially remains on the particulates; introducing the treatment fluid into a portion of a subterranean formation; and, depositing at least a portion of the particulates in the portion of the subterranean formation

L'invention concerne des méthodes d'utilisation de particules enrobées de polymère dans des opérations souterraines, notamment une compression de gravillons, une compression par fracturation et une fracturation hydraulique. Un des modes de réalisation de l'invention concerne des méthodes de traitement d'une formation souterraine consistant à fournir un fluide de traitement comprenant des particules au moins partiellement enrobées d'un polymère. Le polymère est déposé sur les particules en enrobant au moins partiellement ces particules d'une solution polymère comprenant le polymère et un solvant, puis en exposant ces particules à un milieu aqueux, de sorte que le solvant se dissocie sensiblement de la solution polymère et de sorte que le polymère reste sensiblement sur les particules; de sorte à introduire le fluide de traitement dans une partie d'une formation souterraine; et de sorte à déposer au moins une partie des particules dans la partie de la formation souterraine.

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