Sulfomethylated Tannin SMT

Sulfonated Tannin SMT      BIC SMT 100

Product quality: Conform to enterprise standard Q/20191322-8·1-2004
Features & uses
SMT is made from the Chinese gall tannin by sulfonation and other chemical modifications. It is a free flowing brown powder and has a PH of approximately 10.0. SMT has a stronger hydroscopicity and good solubility. SMT is an excellent defloculant (thinner) for all types water base drilling muds. It can effectively lower the viscosity and shear strength of fresh water muds, and maintain certain thinning capacity in saltwater and saturated salt water muds and in the muds with Ca2+contamination up to 1000 mg/L. It improves the high temperature stability and controls the cheoiogical property in 180~200℃ environments. SMT has a good compatibility with all common water base mud additives. SMT is also often used as the oil well cement retarder and dispersant especially suitable for use in high temperature well cementing operations. 
Recommended treatment
1. Normal treatment in fresh water muds as a thinner is about 1%;
2. As a thinner for muds at high temperature: 2~3%.
Net. 25kg , polyethylene film inside and polypropylene braid or compound kraft paper outside bags.

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