The present invention relates to novel methods to stimulate a
hydrocarbon-bearing formation; in particular, techniques are disclosed for
shooting perforations aligned with the direction of probable fracture
propagation; this is followed by fracturing using a low viscosity fluid,
preferably a viscoelastic surfactant-based fluid; the combination yields
surprising results with respect to optimized fracture efficiency (i.e.,
ideal height, and half-length more closely approaches the true fracture
length due to superior clean up properties of the fluids).