Acid treatment volume and rate guidelines

Broad volume ranges were shown previously in the general treatment procedures. Acid treatment fluid volumes typically recommended are not as hroad and are summarized in table 6-4. 

Step Recommended Fluid Volumes for Permeability Range (gal/ft )  

Lower-permeability sands should be treated with lower acid volumes, because of the increased sensitivity to damage caused by the treatment. Also, if a formation contains high clay content, especially the swelling variety (e.g., smectite or illite-smectite), volumes may need to be reduced further. 

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