ZD-VES VES Viscoelastic Surfactant

Due to differences in the reservoir permeability, high permeable interval acid treatment, and the vast majority of low permeability reservoir, has not been acidification reconstruction. Lead to acidification effect is poorer. Using viscoelastic acidification diverter acidification process will improve the stimulating. At the beginning of the construction, the high permeable formation or natural fracture and inspiratory acid, as you progress through the acidification acid viscosity increased, had the high permeable zone of low permeable formation becomes. Permeable zone of permeable zone in making start acid absorption, also stuck into low permeable formation, low permeability layer became relatively high permeable formation, low permeability layer to take acid at this time. Owing to the intelligent stiffen effect, make the whole long uniform reservoir section of acidification, mining the most almost no contribution to the oil and gas in low permeability reservoir potential.