A concise guide to water frac design

The popularity of water fracs has increased in recent years. A reduction in fluid cost and overall fracture-stimulation cost has in some cases revived development in low-permeability reservoirs like the Barnett shale in north-central Texas. Water fracs have also been used effectively in low-permeability reservoirs with large net pays, requiring large fluid volumes to attain adequate fracture half-lengths for commercial production.

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