Well treatment fluids and methods for the use thereof
OwnerDaniel Patrick Vollmerinventor
Life of this patent
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Abstract
This invention relates to a well treatment fluid and a method to treat an/or fracture a subterranean formation comprising: injecting a well treatment fluid into the formation at sufficient pressure to fracture the formation wherein the fluid comprises: (a) one or more amphoteric surfactants; (b) water; (c) one or more nonaqueous solvents; (d) optionally, an acid forming compound; and (e) provided that if the acid forming compound is present a hydrophilic alcohol may also be optionally present; wherein the all or part of the fluid forms vesicles.
Claims45
A well treatment fluid comprising:
- (a) one or more amphoteric surfactants;
- (b) water;
- (c) one or more nonaqueous solvents;
- and
- (d) an acid forming compound, wherein all or part of the fluid forms vesicles.
A well treatment fluid comprising:
- (a) one or more amphoteric surfactants;
- (b) water;
- and
- (c) one or more nonaqueous solvents, wherein the one or more nonaqueous solvents comprise 2-ethyl hexanol, ethylene glycol monobutyl ether, or mixtures thereof, and wherein all or part of the fluid forms vesicles.
A well treatment fluid comprising:
- (a) one or more amphoteric surfactants;
- (b) water;
- (c) one or more nonaqueous solvents;
- and
- (d) proppant, wherein the proppant comprises gravel, sand, resin coated sand, ceramic beads, bauxite, glass, glass beads, or mixtures thereof, and wherein all or part of the fluid forms vesicles.
A method to treat and/or fracture a subterranean formation comprising:
- injecting a well treatment fluid into the formation at sufficient pressure to fracture the formation, wherein all or part of the fluid forms vesicles and the well treatment fluid comprises:
- (a) one or more amphoteric surfactants;
- (b) water;
- (c) one or more nonaqueous solvents;
- and
- (d) optionally, an acid forming compound, and wherein at least 50% of the vesicles have a diameter of 500 Å or more.
A method to treat and/or fracture a subterranean formation comprising:
- injecting a well treatment fluid into the formation at sufficient pressure to fracture the formation, wherein all or part of the fluid forms vesicles and the well treatment fluid comprises:
- (a) one or more amphoteric surfactants;
- (b) water;
- and
- (c) one or more nonaqueous solvents.
Dependencies are inferred from the claim text.