One of the applications within which CMC carboxymethyl Cellulose finds wide usage is as a stuff in lubricating substance to be used in well drilling. Such muds are often ready at the drilling wherever fresh water might not continuously be offered. In such cases solubility in salt solutions will be important and also the method of this invention makes salt soluble CMC carboxymethyl cellulose.
Surprisingly, and erratically, it is ready in keeping with the strategy of the invention also exhibits a second improved property useful to muds; particularly, it well decreases the loss potential of such a mud. Water loss is outlined because the loss of liquid from a lubricating substance to the well formation. The bigger the water loss worth of a mud, the bigger is that the potential of losing water from the mud to the formation throughout for this industry.