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US 12,466,990 B2Granted
Water-based anionic friction reducer
AssigneeObsidian Chemical Solutions, LLC
InventorJohn Neufeld
Life of this patent
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Abstract
A system and method for manufacturing and using a water-based friction reducer. The anionic water-based friction reducer is environmentally friendly. It results in long term stability with no separation or solid sediments. It is also less expensive than oil-based friction reducing liquids. The water-based friction reducing liquid has water, a suspension polymer, an inorganic salt, an amide, and a dispersant. The water-based friction reducing liquid can replace oil-based friction reducing liquids.
Claims6
A method of making a friction reducing liquid, said method comprising the steps of:
- a) adding water;
- b) adding a suspension polymer, wherein said suspension polymer is a xanthan slurry, and wherein said suspension polymer stabilizes the system;
- c) adding an inorganic salt to form a mixture, wherein said inorganic salt comprises calcium chloride anhydrous;
- d) adding a dispersant after adding said inorganic salt and obtaining a temperature of about 160° F.;
- e) cooling said mixture in a chiller to a temperature of between 70° F.-90° F.;
- f) adding an amide after said cooling step, wherein said dispersant reacts with water and said inorganic salt and prevents said amide from activating after said adding, and wherein said amide comprises polyacrylamide powder;
- g) mixing to form a water-based friction reducing liquid
- wherein said friction reducing liquid contains no mineral oil, petroleum distillates, diesel, kerosene, or surfactants
- and wherein said friction reducing liquid comprises no inverting surfactants.
6 more elements
Dependencies are inferred from the claim text.