TX 75083-3836, U.S.A., fax 01-972-952-9435.
AbstractA new study has been performed that focuses on the reduction in gas flow rates and production that can occur due to damage from fracture fluid leakoff in high permeability gas reservoirs. We found, in some cases, fluid damage to the formation during fracturing operations (i.e., Frac Packs) may be more severe than what has been previously assumed in prior studies. As a result, gas flow rates can be significantly reduced, especially in gas reservoirs with moderate levels of permeability; e.g., 10 -50 md. The results of the study also showed that some fracture treatments are not achieving sufficient propped lengths to overcome near wellbore damage, thus compounding the problem and further reducing gas flow rates