Technical Data Sheet
Sodium carboxymethyl cellulose(CMC) for oil drilling
CMC-Na physical Chemistry Quality Index
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ITEM
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SPEC.
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LV-CMC
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MV-CMC
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HV-CMC
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APPEARANCE
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Free-flowing white or yellowish fibrous powder without caking
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MOISTURE
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≤10
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PURITY, %
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≥80.0
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≥85.0
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≥95.0
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Substituting degree
D.S. %
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≥0.80
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≥0.65
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≥0.8
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PH
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7.0-9.0
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7.0-9.0
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6.5-8.0
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Performance in Mud
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TYPE
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ITEM
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Spec.
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Distilled water
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Salt water
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Saturated Salt water
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BASED
SLUPPY |
FLUID LOSE, ml
|
60±10
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90±10
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100±10
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Apparent viscosity,mpa·s
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≤6
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≤6
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≤10
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ph
|
8.0±1.0
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8.0±1.0
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7.5±1.0
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HV-CMC
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Mud yield,m³/t
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≥200
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≥150
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≥160
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LV-CMC
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FLUID LOSE
10ml |
Increase,g/l
|
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≤7.0
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≤10.0
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Apperent viscosity mpa·s
|
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≤4.0
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≤6.0
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MV-CMC
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Increase, g/l
|
6. 0
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14. 0
|
3.5
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Apparent viscosity,mpa·s
|
≥15
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≥15
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≥15
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Fluid lose, ml
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≤9
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≤9
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≤8
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Characteristics:
Sodium Carboxymethyl Cellulose (CMC)is white or yellowish powder that is odorless, tasteless and non-toxic. It has high hygroscopicity and is soluble in water to form a thick liquid. It is a polyanionic electrolyte and not fermented. It has good heat-stability, resistance to salt and film-forming property. It is a strong emulsifier for fat and oil .
The physical-chemical specification of CMC for drilling fluid are as follows.