Ecolab USA Inc.

Championx USA Inc.

William J Andrews

Peter E Reed

Xiaojin Harry Li

Mingli Wei

David J Castro

Daniel Eugene Schwarz

Ashish Dhawan

Heinrich Enoch Bode

Zachary Wilson Logan

Kerry C Brinkman

Brett Brotherson

Warren T Gillenwater

Martin David Biggs

Disclosed herein are water-soluble polymers comprising hydrolyzable cross-linked monomer units, and methods for recovering hydrocarbon fluids from a subterranean formation using the water-soluble polymers.

Mobility control polymers for enhanced oil recovery

Emulsions of mobility control polymers can be used to increase recovery of crude oil from a subterranean hydrocarbon-containing formation. A flooding fluid comprising the polymer emulsions are injected into a well that is in contact with the subterranean hydrocarbon-containing formation. The polymers can be temporarily cross-linked and have protected shear degradation and improved injectivity into the well; the shear resistance can be measured in terms of viscosity loss due to shear, and the improved injectivity can be measured in terms of the flooding fluid's filter ratio, flow rate, and viscosity.

Polymer emulsions for use in crude oil recovery

Disclosed herein are polymer compositions useful in high temperature enhanced oil recovery applications. The polymer compositions include at least 20 mol % of an N,N-dialkyl-N,N-diallylammonium salt and further have a net negative charge. The polymer compositions provide polymer dispersions in water or brine having stable viscosity when maintained at temperatures of 100&#xb0; C. and above for at least 2 days.

Thermally stable polymers for enhanced oil recovery

Enhanced oil recovery using mobility control crosslinked polymers

Disclosed herein are inversion systems and methods of diluting w/o lattices including about 10 wt % to 80 wt % of a water soluble polymer. Using the inversion systems and methods described herein, dilution of w/o lattices is carried out in a single step to form dilute lattices having 10,000 ppm or less polymer; the dilute lattices form polymer solutions with no further addition of mixing force or water. The solution viscosities of the polymer solutions obtained using the systems and methods of the invention are at least about 80% of solution viscosity expected in the absence of shear.

Apparatus and method for inverting polymer latices

Size press formulations and methods of treating a substrate using the size press formulations. The size press formulations may include solids. The solids may include a polyaluminum chloride compound, starch, an optical brightening agent, and a salt. Suitable polyaluminum chloride compounds include phosphated polyaluminum chloride, sulfated polyaluminum chloride, polyaluminum chloride, polyaluminum silica sulfate chloride, and any combination thereof.

Method of increasing paper surface strength by using polyaluminum chloride in a size press formulation containing starch

Disclosed herein are methods of increasing retention and drainage in papermaking processes using high molecular-weight, water-soluble polymers.

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Parker, CO, United States of America

William J Andrews