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1. Sodium Carboxymethyl Cellulose(CMC) for Oil drilling IndustrySodium Carboxymethyl Cellulose is widely used in drilling project.“YUYU” Introduction to Oil Drilling CMC,“YUYU”  CMC oilfield grade is divided into LV and HV(HV)?Slurry with CMC would form thin but hard filter cake with low permeability,Website:http://www.s-cmcs.com, reducing water loss. Adding CMC into slurry will endow the drill with low initial gel strength, making the slurry give off the gas inside and abandoning the waste into the slurry pit. Same as other suspending dispersion, the drill slurry has an existing period which