Applications / Functions:  

• Seals off depleted zones without excess build up of wall cake
• Plugs and seals unconsolidated, Vugulars, Cavernous, and fractured formations
• Near well bore inter-Matrix
• Blended in the proper ratio to produce the most effective seal
• Prevents differential sticking in depleted sands
• Reduces seepage loss
• Easily maintained in the entire circulating system due to its particle size distribution

  Advantages:  

• Biodegradable
• Air blown for superior heat stability
• Hydrophobic in nature
• Compatible in all water-base systems
• Fine and medium grades that pass through most fine-mesh shaker screens
• One sack blend that does not require additional LCM
• Mixes easily and rapidly

 Typical Properties:  

• Appearance — fibers and powder
• Color - gray
• Specific gravity — .39
• pH — 7.0 - 9.0
• Bulk density — 26
• Solubility — <10%

 Recommended Treatment:  

• May be added directly through hopper
• 2 to 10 sacks per hour for preventative measure
• Mix 15 to 50 ppb for lost circulation
• Mix 6 to 10 ppb in PSD sweeps for seepage control

 Packaging:  
TUFF-FIBER is packaged in 40 lb sacks.