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AssigneeChemeor, Inc.
InventorsYongchun Tang, Allen Thomas Lyssy, Yaser Asgari, Carl Wilhelm Aften, Hongxin Tang
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A dry polymer powder for use in enhanced petroleum recovery without being prehydrated before being added to water or brine to be introduced into a wellhead. The dry polymer powder consisting of at least one of a polyacrylamide, a copolymer of acrylamide and acrylic acid, a functionalized derivatives thereof, a galactomannan, or cellulosic polymer or derivatives thereof, and the polymer can be crosslinked or not crosslinked, provided that if they are homo- or co-polymers of acrylic acid, they are not crosslinked. The dry polymer powder is sized between two size limits, namely at least about 85 wt % of particles of a size smaller than about 40-mesh, and at least 75 wt % of particles of a size greater than 200-mesh, which size range ensures that the dry polymer powder will efficiently hydrate in the water or brine within about one minute without forming fisheyes.
A dry polymer powder for use in the petroleum industry for enhanced petroleum recovery, comprising dry polymer powder sized between two size limits, namely at least about 85 wt % of particles of a size smaller than 40-mesh, and at least 75 wt % of particles of a size greater than 200-mesh.
A dry polymer powder for use in the petroleum industry for enhanced petroleum recovery, comprising a dry polymer powder selected from the group consisting of at least one of a polyacrylamide, a copolymer of acrylamide and acrylic acid, a functionalized derivative thereof, a galactomannan, or a cellulosic polymer or derivatives thereof, wherein the polymer can be crosslinked or not crosslinked, provided that if they are homo- or co-polymers of acrylic acid, they are not crosslinked, wherein the dry polymer powder is sized between two size limits, namely at least about 85 wt % of particles of a size smaller than about 40-mesh, and at least 75 wt % of particles of a size greater than 200-mesh, and wherein the polymer size range ensures that the dry polymer powder will efficiently hydrate in the water or brine within about one minute without forming fisheyes.
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