Products > Oilfield Chemicals > Thinners, Dispersants > Desco CF Sulfomethylated Tannin Suppliers
Product name : Desco CF Sulfomethylated Tannin Suppliers
Item : Oilfield SMT
Type : Mud Thinners
CAS : 68201-64-9
QC : BIC
Application : Drilling Mud Thinners, Mud Conditioners
Similar to : Drill-Thin, Desco CF
E-mail : sales@bichain.com
Packages : 25Kg, 50Kg, 50LB
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Details:
Sulfomethylated tannin (also sulfomethylated quebracho or SMT) is a derivative which is made from tannin extract of quebracho and Chinese gallnut trees by sulfonation process and other chemical modifications. It is a free flowing black or brown powder with non-toxic, non-polluting and none heavy metal ions. SMT is has excellent thinning capacity in all type of water based drilling mud systems. It can effectively reduce the viscosity and shear strength of fresh water drilling mud. Sulfomethylated tannin also can maintain certain thinning capacity in saltwater and saturated salt water mud systems and in fluid system with Ca2+ contamination up to 1000 mg/L. It can improve drilling fluids' thermal stability and control their rheological properties under high temperature from 180℃-200℃. SMT has a good compatibility with all common water based mud additives. SMT is also often used as an oil well cement retarder and dispersant especially suitable for use in high temperature well cementing process. Bichain is one of reliable sulfomethylated tannin (quebracho) suppliers and manufacturers for water based HPHT drilling wells. We supply high quality SMT tannin products like Desco CF and Drill-Thin. CAS 68201-64-9.
Technical Data:
Sulfomethylated Tannin Desco CF spec
Mud Performance:
Sulfomethylated Tannin Desco CF mud spec
Recommended dosage 
Normal treatment in fresh water based muds as a thinner is about 0.5-1.0%;
As a thinner for muds for HPHT wells at high temperature: 1.5-3.0%.
Package and Storage
Package: 25kg, 50kg, 50lb per bag, sealed in 4-in-1 compound paper bag with plastic lining or packed according to the clients' requirements. Store in dry cool and ventilation environment. Avoid moisture and damp. 
Shelf time: 2 years
 

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