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Insights into Deepwater Frac-Pack Completions Using Radioactive Tracers

R.D. Pourciau, SPE, Chevron Corp., and R. Waltman, SPE, Halliburton

Frac packing has become the standard sand-control completion technique for many deepwater operators because of low completion failure rates[1] and excellent production performance.[2] These treatments are engineered to optimally place the stimulation fluids and proppants based on gravel- pack (GP) tool operational procedures and fracture model simulations.[3] Direct near-wellbore measurements from radioactive (RA) tracers can be used to help minimize both engineering and operational uncertainties of this process.

A comprehensive review of 30 Gulf of Mexico frac-pack completions within four deepwater fields has been completed, in which RA tracers have been used. These logs allowed initial assessment of the sand control and resulted in better frac-pack designs. The average perforation length of these 30 completions is 94- ft and the average deviation is 41°. Three of these wells have more than 200- ft of perforations and seven have over 60° of hole deviation.

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