Sodium carboxymethyl cellulose CMC is mainly used in drilling fluids and completion fluids in oil production.
1. The role of sodium carboxymethyl cellulose in drilling fluids:
as a tackifier
as a rheology control agent
as a fluid loss reducer
It has the functions of strong suspension ability, efficient carrying capacity of drilling cuttings, cleaning cuttings, stabilizing the well wall, preventing mud loss, protecting the drill bit, and reducing the thickness of the mud cake.
2. The role of sodium carboxymethyl cellulose in completion fluid:
Control fluid viscosity
Suspended heavy objects
carry filler
prevent fluid loss
3. The role of sodium carboxymethyl cellulose in fracturing fluid:
CMC can be configured into gel to make water-based fracturing fluid to improve oil well production in later stages
