Investigations of a shale formation revealed that stimulating with an engineered completion design leads to lower breakdown pressures, higher treatment rates, higher proppant placement, and increased hydrocarbon production. In the table below, wells 1, 2, and 3 were completed using a geometric or nonengineered stimulation design. Wells 4, 5 and 6 were completed using an engineered selective stimulation design. The “Completion Summary” and “30-Day Cumulative Production” indicates a more effective completion design in that lower breakdown pressures, higher pumping rates, more effective proppant placement from the wells completed using an engineered selective stimulation design are achieved based on the geomechanical properties in the shale formation.
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Table Reference: Ajayi, B., Aso I. I., Caplan, J., Clark, B. D., Li, X., Liu, H., Luo, Y. and Waters, G.: “Stimulation design for unconventional resources”. Oilfield Review Summer, 25, No. 2, 2013.