DISPERSIBLE GRADE DESCRIPTION:
polymer is dispersible grade xanthan gum in oildrilling application.
It is a high molecular weight xanthan biopolymer used for rheology
control in water based mud systems. It can be prevent fish-eye while
application in mud system.
pass 28 mesh Min.95% pass 42 mesh
soluble in fresh / salt water
8 (1lb/bbl in seawater by FANN 35)
polymer's primary function is to provide effective viscosity for
solids transport and solids suspension with a sufficient dispersiblility.
It will enable optimum rheology control through superior low shear
rate viscosity which is highly shear thinning. Dynazan
polymer will perform effectively in all types of water-based drilling
fluids from low solids to highly weighted systems. This includes
fresh water, salt and heavy brine systems. Being a dispersible product,
will be easier to mix in all brine solutions.
polymer provides the rheological properties for improved hydraulics.
This includes minimum friction pressures for additional hydraulic
horsepower at the bit for maximum penetration rates. The same rheology
promotes laminar flow in the annulus for increased bore hole stability
with maximum solids transport capacity.
polymer should be added quickly through the hopper at mediate shear
without lumps and to minimize waste. It should be added at the rate
of approximately six (6) pounds per minute (25 minutes for 150 lb
sack). Higher salinity, cold water and low shear mixing will lengthen
the time for full viscosity to be achieved.
amount of Dynazan
polymer required will depend upon the effective viscosity or friction
pressure reduction needed. When used as the primary viscosifier
in a low colloid system, 1-2 lb/bbl may be required. Higher concentrations
up to 4 lb/bbl may be used for extremely high transport requirements.
Chemical Name - xanthan gum CAS # : 11138-66-2 DOT Classification
- Non-hazardous Packaging: 25 kg plastic lined paper bags