Patent ID: 6814144
Filing Date: 2004-11-09
Classification: E21B

Abstract:
In the treatment of a well extending from a well head into a subterranean formation, the method comprising:(a) circulating a plugging fluid comprising a suspension of a particulate plugging agent in a carrier liquid down said well through a first flow path within said well and into said well in contact with the wall of said well within said subterranean formation; (b) separating said liquid from said particulate plugging agent by circulating said plugging fluid into a second flow path within said well through a set of screen openings allowing the passage of said carrier liquid while retaining said particulate plugging agent in contact with said set of openings to cause said plugging agent to accumulate to form a bridge packing within said well to establish an interval within said well which is isolated from the remainder of said well; and (c) subsequent to the establishing of said bridge packing, introducing a treating fluid into the isolated interval of the well and into contact with the surface of said formation in said well adjacent to said accumulated plugging agent defining said bridge packing.