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Hydraulic Fracturing--New Developments
Gerald R. Coulter (1)
Several factors should be considered in determining if a stimulation treatment should be conducted. These are: the existing wellbore damage, the formation flow capacity, the fracture flow capacity required to give stimulation, the remaining reserves, and the 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 proven successful in stimulating zones that were previously considered uneconomical or marginal. These new developments concern fluids and fluid conductivity in fractures with greater lengths.
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