Oil Drilling Grade PAC & CMC
1.Polyanionic Cellulose (PAC)
|
Type |
D.S |
PH Value |
Apparent Viscosity(mpas) |
Filtrate Loss (ml) |
|
PAC-LV |
≥0.90 |
6.5-8.0 |
≤ 40 |
≤ 16 |
|
PAC-HV |
≥0.90 |
6.5-8.0 |
≥50 |
≤ 23 |
2.Sodium Carboxymethyl Cellulose(CMC)
|
Type |
D.S |
PH Value |
Apparent Viscosity(mpas) |
Filtrate Loss (ml) |
|
CMC-LV |
≥0.80 |
6.5-8.0 |
≤90 |
≤ 10 |
|
CMC-HV |
≥0.80 |
6.5-8.0 |
≥30 |
≤ 10 |
CMC&PAC is used as filtrate reducer in drilling fluid to form low permeability, flexible, thin and dense filter cake, so as to reduce the loss of drilling fluid. CMC&PAC also can be used as suspending agent, plugging agent and thickening agent for low solid drilling fluid. The products have good temperature resistance and salt resistance, while are little affected by the mold, thereby stabilizing and prolonging the existence period.
CMC&PAC could disperse in all water base drilling fluids, from fresh water until saturated brine drilling fluid can be used. They could prevent the fluid into the pores and cracks, fracturing fluid can be used to control the loss of fluid into the well.
CMC&PAC, as an oil production and fracturing agent, it could improve the performance of the fracturing fluid suspension, can significantly reduce the filtration loss and reduce the thin mud cake, and shale hydration has a strong inhibitory effect.
