Integrity Bio-chemicals, LLC

Hppe, LLC

Christopher P Gardner

Stephen William Almond

Charles R Landis

Ashoka V R Madduri

Curtis J Rodencal

Sanket Gandhi

Matthew B Blackmon

Kristopher Megahan

Lee A Manning

Ashoka VR Madduri

Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. In addition, the compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.

Fatty acid reaction products of dextrins or dextran formulated with a surfactant

Compositions comprising a reaction product of a saccharide polymer and a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The compositions also comprise one or more alcohols originating from the fatty ester upon forming the reaction product of the saccharide polymer and the fatty ester. The reaction product of the saccharide polymer and the fatty ester may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant. The fatty ester may comprise one or more glycerol esters, such as one or more plant and/or animal oils and/or fats, and the one or more alcohols originating from the fatty ester may comprise glycerol. Fatty acids originating from the fatty ester may be substantially straight-chain fatty acids.

Compositions comprising reaction products of saccharide polymers and fatty esters formulated with a neutral surfactant

Fluid contaminants may be prevalent in many industries, such as the mining industry. Functionalized saccharide polymers comprising two or more monosaccharide units linked by glycosidic bonds and having a portion of the monosaccharide units oxidatively opened and functionalized with at least one aminocarboxylic acid covalently bound through nitrogen at a site of oxidative opening may be utilized in conjunction with fluid remediation processes, such as froth flotation. In non-limiting examples, the functionalized saccharide polymers may also be useful for promoting dust control, particulate coating, clay stabilization, and various subterranean treatment operations. Glycine represents one example of an aminocarboxylic acid that may be covalently bonded through nitrogen at a site of oxidative opening.

Aminocarboxylic acid-functionalized saccharide polymers and methods for production and use thereof

Loose particulate materials can be problematic in various aspects. For example, loose particulate materials may generate dust or be difficult to consolidate together. Fines in loose particulate materials may also be an issue. Coated particulates may alleviate some of the foregoing issues. Suitable coated particulates may comprise a particulate material comprising sand or a ceramic, and a polysaccharide composition coated upon the particulate material, the polysaccharide composition comprising a functionalized polysaccharide. Other particulate materials such as wood chips and animal litter particulates may be coated with functionalized polysaccharides to achieve similar advantages.

Polysaccharide compositions and particulate materials coated therewith

Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Functionalized dextrin compounds that are partially oxidized and bear at least one amine group at an oxidation site may promote clay stabilization for more effective treatment of a subterranean formation. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound, the amine-functionalized dextrin compound comprising 2 to about 20 glucose units linked together with &#x3b1;(1,4) glycosidic bonds, and a portion of the glucose units being oxidatively opened and functionalized with at least one amine group at a site of oxidative opening; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound with the clay-containing mineral to affect stabilization thereof.

Aminated dextrin compounds and subterranean treatment methods using the same

Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound having 2 to about 20 glucose units linked together with &#x3b1;(1,4) glycosidic bonds, and an amine-functionalized dextran polymer having a plurality of glucose units linked together with &#x3b1;(1,6) glycosidic bonds; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound and the amine-functionalized dextran polymer with the clay-containing mineral to affect stabilization thereof. A portion of the glucose units are oxidatively opened and functionalized with at least one amine group at a site of oxidative opening in both the amine-functionalized dextrin compound and the amine-functionalized dextran polymer. The amine-functionalized dextrin compound and the amine-functionalized dextran polymer operate synergistically with one another.

Compositions comprising aminated dextrin compounds and subterranean treatment methods using the same

Compositions comprising crosslinked polysaccharides, particularly levan and/or dextran, may provide advantageous benefits when admixed with concrete blends. Suitable compositions may comprise a biologically sourced surfactant, and a crosslinked polysaccharide, in which the crosslinked polysaccharide comprises at least one crosslinking group bonded via ether linkages to a first polysaccharide chain and a second polysaccharide chain. Concrete blends may comprise such compositions, a cement and water. Methods for forming and/or using the concrete blends may comprise allowing the concrete blends to form a hardened mass.

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Cresson, TX, United States of America

Christopher P Gardner