Four wells in the U.S. Gulf of Mexico were worked over in reservoirs with bottomhole pressures (BHPs) ranging from 0.17- to 0.23-psi/ft gradients using the frac-pack technique. The purpose of the paper is to detail the chronology and expose the learning curve which led to the successful completions. Treatment tools, tubulars, design, rate, and fluid selection are discussed as they were applied in the implementation of each successive treatment.

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