Abstract
Several factors should be considered in determining if a stimulation treatment should be conducted. These are existing wellbore damage, formation-flow capacity, required stimulation, remaining reserves, and economics. The objectives in hydraulic fracturing are twofold: (1) the stimulation of the formation by increasing the effective wellbore radius, and (2) the bypass of formation damage. Once it is decided to use hydraulic fracturing, there are many factors to consider in designing the treatment. These are related to the formation characteristics, fluid type to be used in the treatment, proppant type, treatment size, and economics. New developments in the last few years have proved successful in stimulating zones that previously were considered uneconomical or marginal. These new developments are in the area of fluids, methods of attaining greater conductivity in fractures with greater fracture lengths, and in shutting off nonproductive zones. End_of_Article - Last_Page 1830------------
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