Compositions and methods for treatment of well bore tar

Details Compositions and methods for treatment of well bore tar Compositions and methods for treatment of well bore tar

C - Chemistry, Metallurgy

09

K

C09K 8/524 (2006.01)

Patent

CA 2701697

Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a treatment fluid comprising a styrene- acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand.

Parmi les nombreux procédés et compositions décrits dans les présentes, un procédé comprend les étapes consistant à : mettre en contact le goudron présent dans un puits de forage avec un liquide de traitement comprenant un polymère styrène-acrylate ; et laisser le polymère styrène-acrylate interagir avec le goudron pour réduire au moins partiellement la tendance du goudron à adhérer à une surface. Un autre procédé fourni dans les présentes comprend un procédé destiné à traiter le sable asphaltique et consistant à : mettre en contact le sable asphaltique avec un liquide de traitement comprenant un liquide aqueux et un polymère styrène-acrylate, le sable asphaltique comprenant du goudron et du sable ; et laisser les polymères styrène-acrylate interagir avec le goudron pour séparer au moins partiellement le goudron du sable.

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