A method of treating a subterranean formation penetrated by a wellbore includes preparing a treatment fluid with shear thinning, non-monotonic rheological properties, injecting the treatment fluid into the subterranean formation, and inducing shear rate softening phase transition in the treatment fluid....http://www.google.es/patents/US7798224?utm_source=gb-gplus-sharePatente US7798224 - Rheology controlled heterogeneous particle placement in hydraulic fracturing
Rheology controlled heterogeneous particle placement in hydraulic fracturing
