Drilling fluid polymer (liquid)
Liquid drilling fluid polymers primarily provide wellbore stabilizers, lubricity and tackifiers to prevent reactive shales and clays from swelling and shedding.
It can also be added to low-solids drilling fluids to improve lubricity and fluid viscosity, and to increase the load-carrying capacity of air/foam injection fluids.
Liquid drilling fluid polymers will help improve core recovery, especially in clays, shales and highly fractured formations. It provides encapsulation of cuttings and helps stabilize the formation.
Advantages of liquid drilling fluid polymer stabilizers:
--Easily mixes in fresh water with minimal shear
--Provides effective clay and shale stabilization
--Gives high lubricity
--Chemical decomposition with household bleach (sodium hypochlorite)
--Flocculate non-reactive solids in the storage pit at low concentrations
--Prevent ball rolling on drill bits and on stabilizers and bottomhole assembly by coating and lubricating solids
Functions of liquid drilling fluid polymers:
--Eliminate expansion, floating drilling, and drilling sticking, and have high lubricity
--Control sticky clays and inhibit the formation of water-sensitive swells.
--Provide excellent drilling cuttings packaging
--Improve wellbore stability and enhance mud rheological properties
--Can be used as a foam stabilizer to improve the self-life of foam-based drilling fluids.