methods for reversing a water-in-oil latex and for recovering a hydrocarbon fluid from an underground reservoir, reversing system, and using a reversing system

摘要

inversion systems and methods for diluting water-in-oil (w / o) latexes including about 10% by weight to 80% by weight of a water-soluble polymer are described herein. By using the inversion systems and methods described herein, w / o latex dilution is performed in a single step to form diluted latexes having 10,000 ppm or less of polymer; The diluted latexes form polymer solutions without 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 the expected solution viscosity in the absence of shear.