* high degree of subsititution
* thermal stability
* high viscosity
* acid and alkali resistance and salt tolerance
* good intermiscibility with other cellulose ethers
* good solubility
* the main raw material of CMC is purified cotton, that it is physiological innocuity material and amity to environment
Application for Dilling
* CMC-containing mud makes a well wall thin, hard and low-permeability filter cake to reduce water loss.
* CMC-containing mud reduces the initial gel of drilling rig.
* Like other suspension dispersions, drilling mud has a certain life period that can be prolonged when the CMC is added to stabilize it.
* CMC-containing mud is insusceptible to influences of mould fungi, so maintenance of a high PH value and use of antiseptics can be avoided.
* CMC-containing drilling mud, serving as a flushing fluid finishing agent, can resist pollution caused by various soluble salts.
* CMC-contatining mud has excellent stability that allows it to reduce water loss at even above 150℃.