CMC-HV (High-viscosity sodium carboxymethyl cellulose)
CMC-H is a technical-grade high-viscosity sodium carboxymethyl cellulose used to reduce filtration in fresh water and seawater mud systems up to 250°F. It is less effective in brines and saltwater and is not generally recommended to be used if the salinity exceed 50,000 ppm.
CMC-H is used in low-viscosity or low-solids fluids and increase viscosity in addition to controlling fluid loss. Subject to bacterial degradation, a biocide should be used to prevent fermentation. CMC-H treated systems should be pretreated with either sodium bicarbonate or possibly citric acid prior to drilling cement.
Control filtration rates in freshwater and seawater mud systems
Deflocculate some seawater muds when used in low concentrations
Temperatures stable up to 250°F
Widely available and an economic source of polymer fluid-loss control
Concentrated chemical, very effective at small treatment levels
Appearance: White powder
Specific gravity: 1.59
pH (5% aqueous solution): 9-11
Freshwater: 0.5-1.5 ppb
Seawater: 2-3 ppb
Add slowly through a mixing hopper at a rate of 10-20 min/sack
25 KG SACK
Dongying City Dayong Petroleum Additives Co.,Ltd.
Add：South Yongxin Road, Kenli County, Dongying City
TEL： 18654646911 Ms Yang 13780771900 Mr Su