Patent ID: 11932811
Assignee: NEXTIER COMPLETION SOLUTIONS INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 7:
8. The method of claim 1, wherein, in the injecting step, the fracturing fluid composition or completion fluid composition further comprising:
one or more zwitterionic surfactants comprising:
(1) one or more compounds comprising the structure:

RfRgRhN+—Ri—CO2−,

wherein Rf, Rg, and Rh are the same or different carbon-containing group, amido carbon-containing group, ether carbon-containing group, or mixtures thereof, and Ri is an alkenyl group, alkenyloxide group or mixtures thereof; or
(2) one or more compounds comprising the structure:

Rj(RgRhN+—Ri—CO2−)n,

wherein Rg and Rh are the same or different carbon-containing group, amido carbon-containing group, ether carbon-containing group, or mixtures thereof, Ri is an alkenyl group, alkenyloxide group or mixtures thereof, and Rj is a multivalent substituent having a valency n between 2 and about 6; or
(3) one or more compounds comprising the structure:

Rl—C(O)—N(Rk)—Rm—N+(RgRh)—Ri—CO2−,

wherein Rg, Rh, Rk and Rl are the same or different carbon-containing group, amido carbon-containing group, ether carbon-containing group, or mixtures thereof, and Ri and Rm are the same or different alkenyl group, alkenyloxide group or mixtures thereof; or
(4) one or more compounds comprising the structure:

Rn—[Ro—C(O)—N(Rk)—Rm—N+(RgRh)—Ri—CO2−]m,

wherein Rg, Rh and Rk are the same or different carbon-containing group, amido carbon-containing group, ether carbon-containing group, or mixtures thereof, Rl, Rm and Ro are the same or different alkenyl group, alkenyloxide group or mixtures thereof and Rn is a multivalent substituent having a valency m between 2 and about 6; or
(5) one or more betaines; or
(6) one or more sulfo-betaines; or
(7) one or more phospholipids; or
(8) mixtures thereof.