US 12,747,382 B2 · Compositions and systems for elastic turbulence

Abstract

A fluid composition which is able to exhibit elastic turbulence while pumped through a flow path which compels changes of direction of flow streamlines and comprise a solution of two or more flexible linear polymers in two categories. The first category has an average molecular weight of at least 10 MegaDaltons and the second category has an average molecular weight in a range from 0.25 to 5 MegaDaltons. The concentration of the first polymer is sufficient to enable elastic turbulence with or without the second category. The concentration of the second category is greater than that of the first. When flowing under low shear towards or away from a chamber where the flow path will induce elastic turbulence, the second category polymer reduces elastic instabilities and consequent pressure drop, thereby reducing pumping energy requirement.

Claims20

Dependent claims

A fluid composition able to exhibit elastic turbulence when flowing, which is a solution of two or more polymers comprising:

at least one dissolved first polymer which is a linear polymer having a weight average molecular weight of at least 10 MegaDaltons;
at least one dissolved second polymer which is a linear polymer having a weight average molecular weight in a range from 0.25 to 5 MegaDaltons;
and
wherein the amount of the first polymer is in a range from 0.05 to 5 wt % of the solution and is sufficient such that a solution containing the first polymer without the second polymer can display elastic turbulence, and wherein the amount of the second polymer is greater than the amount of the first polymer but is not more than 10 wt % of the solution.

1 more element

Dependencies are inferred from the claim text.

Compositions and systems for elastic turbulence

Life of this patent

Compositions and systems for elastic turbulence

Life of this patent

Abstract

Claims20