Viscosity enhancers for viscoelastic surfactant stimulation...

Details Viscosity enhancers for viscoelastic surfactant stimulation... Viscosity enhancers for viscoelastic surfactant stimulation...

2006-12-07

2009-06-09

Gulakowski, Randy (Department: 1796)

Earth boring, well treating, and oil field chemistry

Well treating

Contains inorganic component other than water or clay

C507S240000, C507S241000, C507S244000, C507S245000, C507S248000, C507S260000, C507S261000, C507S265000, C507S271000, C507S274000, C507S275000, C166S305100

Reexamination Certificate

active

07544643

ABSTRACT:
Piezoelectric crystal particles (which include pyroelectric crystal particles) enhance the viscosity of aqueous fluids that have increased viscosity due to the presence of viscoelastic surfactants (VESs). In one non-limiting theory, when the fluid containing the viscosity enhancers is heated and/or placed under pressure, the particles develop surface charges that associate, link, connect, or relate the VES micelles thereby increasing the viscosity of the fluid. The higher fluid viscosity is beneficial to crack the formation rock during a fracturing operation, reduce fluid leakoff, and carry high loading proppants to maintain the high conductivity of fractures.

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