Treatment of circulating water systems including well treatment fluids for oil and gas applications
AssigneeBwa Water Additives UK Limited
InventorChristy Colleen WENTWORTH
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Abstract
A biocidal additive includes a blend of a biguanide compound and a polymeric ammonium compound. A method of treating a water system includes adding a biocidal additive to the water system to achieve a minimum inhibitory concentration or greater in the water system. In exemplary embodiments, the water system is a well treatment fluid for oil and gas applications, the blend is a synergistic blend, the biguanide compound is polyhexamethylene biguanide, and the polymeric ammonium compound is poly[oxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylene dichloride].
Claims20
A method of treating a well treatment fluid for oil and gas applications, the method comprising adding a biocidal additive to the well treatment fluid to achieve a minimum inhibitory concentration or greater in the well treatment fluid, wherein the biocidal additive is a blend of a biguanide compound and a polymeric ammonium compound.
A biocidal additive comprising a blend of a biguanide compound and a polymeric ammonium compound.
A method of treating a water system comprising adding a biocidal additive to the water system to achieve a minimum inhibitory concentration or greater in the water system, wherein the biocidal additive is a blend of a biguanide compound and a polymeric ammonium compound.
Dependencies are inferred from the claim text.