CMC oil drilling HV
MOISTURE, %: 10max
PURITY, %: 95min
D.S. %: 0.8min
PH: 6.5-8.0
SODIUM CARBOXYMETHYL CELLULOSE(CMC) - HV
Molecular Formula: C6H7O2(OH)2OCH2COONa
CAS NO. 9004-32-4
H.S. Code: 39123100
“LONGFAR”CMC can be used as water-soluble gel for drilling fluids, and can from artesian well liquor.
It has good water-loss controlling ability; especially PAC is highly effective drop filter-loss agent. Even added at low quantity, it can control water loss at very high level, but does not affect slurry’s other characteristics. It can form high quality slurry cake which is strong and flexible. It has good temperature resistance and superior anti-salt character. Under certain salt density, it can remain good water-loss capability and certain rheology, so the viscosity in salt solution is the same as in water, which is specially suitable for sea misering and deep well. It effectively controls the rheology of slurry, with good non-Newtonian fluid performance.
Moreover, “LONGFAR”CMC can be used as well fixing liquor to prevent fluid entering terrane or crack, and also can be used as pressing liquor to control the loss of fluid into oil well structure.
CMC-Na physical Chemistry Quality Index
ITEM | SPEC. | ||
LV-CMC | MV-CMC | HV-CMC | |
APPEARANCE | White or light yellw powder,freely flowable | ||
MOISTURE | ≤10 | ||
PURITY, % | ≥80.0 | ≥85.0 | ≥95.0 |
D.S. % | ≥0.80 | ≥0.65 | ≥0.8 |
PH | 7.0-9.0 | 7.0-9.0 | 6.5-8.0 |
Performance in Mud
TYPE | ITEM | Spec. | |||
Distilled water | Salt water | Saturated Salt water | |||
BASED | FLUID LOSE, ml | 60±10 | 90±10 | 100±10 | |
Apparent viscosity,mpa·s | ≤6 | ≤6 | ≤10 | ||
ph | 8.0±1.0 | 8.0±1.0 | 7.5±1.0 | ||
HV-CMC | Mud yield,m³/t | ≥200 | ≥150 | ≥160 | |
LV-CMC | FLUID LOSE | Increase,g/l |
| ≤7.0 | ≤10.0 |
Apperent viscosity mpa·s |
| ≤4.0 | ≤6.0 | ||
MV-CMC | Increase, g/l | 6. 0 | 14. 0 | 3.5 | |
Apparent viscosity,mpa·s | ≥15 | ≥15 | ≥15 | ||
Fluid lose, ml | ≤9 | ≤9 | ≤8 | ||
