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				| Duratone E |  
				
				
				
				
				
				
				
				
				
				
				
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				DURATONE E, organophilic lignite, is used to control filtration rates in ester and olefin based drilling muds.  DURATONE E is stable at high temperatures and it can be used to control filtration rates in deep, hot wells.  It can also be used to improve emulsification of water in oil-based muds and to promote fluid stability. DURATONE E meets environmental requirements for Norway. *Applications/Functions: Reduce HTHP filtration rate, Promote stability of invert emulsion fluids. *Advantages: Increases thermal stability of drilling fluids at temperatures beyond 500'F(260'C), Effective in all ester/olefin systems as well as inverts. |  
				
				
				
				
				
				
				
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				Appearance: Gray to black powder Bulk density lb/ft©ø: Compacted 44 Uncompacted 31 Specific Gravity: 1.8 |  
				
				
				
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