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US 2017/0362487 A1Published application
Emulsions, treatment fluids and methods for treating subterranean formations
AssigneeKemira Oyj
InventorsPaul Waterman, Logan Jackson, Danny Nguyen, Ronald Robinson
Life of this patent
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Abstract
Emulsions, treatment fluids and methods for treating subterranean formations are provided, wherein the emulsions comprise water, a water-immiscible liquid, one or more polymers, one or more ethoxylated amine compounds and optionally, one or more organic or inorganic salts. The emulsions are particularly suitable for use in harsh brine conditions.
Claims20
An emulsion comprising:
- a) water;
- b) a water-immiscible liquid;
- c) greater than about 10% by weight one or more polymers;
- d) about 0.1% to about 5% by weight one or more ethoxylated amine compounds, or an inverting surfactant composition comprising one or more inverting surfactants and one or more ethoxylated amine compounds;
- and
- e) optionally, at least about 0.5% of one or more organic or inorganic salts.
3 more elements
(canceled)
A method for improving friction reduction properties of a treatment fluid, comprising:
- (i) providing an emulsion comprising:
- a) water;
- b) a water-immiscible liquid;
- c) about 10% to about 35% by weight one or more polymers;
- d) about 1% to about 5% by weight one or more emulsifying surfactants;
- e) about 0.1% to about 5% by weight of an inverting surfactant composition comprising one or more inverting surfactants and one or more ethoxylated amine compounds;
- and
- f) at least about 0.5% of one or more organic or inorganic salts;
- and
- (ii) inverting the emulsion in the treatment fluid comprising brine;
- wherein the resultant treatment fluid has an improvement in friction reduction, when compared to a similar treatment fluid in which the inverted emulsion that does not contain the one or more ethoxylated amine compounds.
8 more elements
Dependencies are inferred from the claim text.