the use of Drilling oil opensodium carboxymethyl cellulose（CMC HV,CMC LV）introduction
"YUYU" brand drilling petroleum using CMC products, divided into low viscosity (LV) and high viscosity (HV).
CMC containing mud makes wall form thin and hard, low-permeability filter cake, reduce water loss. After CMC is added into the mud, can make the drill get low initial gel strength, so that the mud is easy to discharge air in it, at the same time the debris soon abandoned in the mud. Drilling mud and other suspended dispersion as there is, a certain period, after the entry of CMC makes it stable and long-term survival. CMC containing mud, are little affected by the effects of mould, no need to maintain a high pH value, also need not use preservatives.