Carboxymethyl Cellulose (CMC)
1.Product name:Carboxymethyl Cellulose Sodium (CMC)-Oil Dring grade
2.Molecular Formula: [C6H7O2(OH)2CH2COONa]n
3.Cas No:9004-32-4
3.Specification of CMC for Oil drilling liquids & Oil drilling liquids properties (According to SY5093-92)
|
Item
|
Index
|
|
LV-CMC
|
MV-CMC
|
HV-CMC
|
|
Appearance
|
White or light yellow powder, freely flowable
|
|
Water,%
|
10 max
|
|
CMC,%
|
80.0 min
|
85.0 min
|
95.0 min
|
|
Substitution degree,%
|
0.80 min
|
0.65 min
|
0.8 min
|
|
PH
|
7.0-9.0
|
7.0-9.0
|
6.5-8.0
|
|
Type
|
Item
|
Typical measured values
|
|
Distilled water
|
Brine
|
Saturated brine
|
|
Base mud
|
Filtration loss, ml
|
60±10
|
90±10
|
100±10
|
|
Apparent viscosity, mPa•s
|
6 max
|
6 max
|
10 max
|
|
PH
|
8.0±1.0
|
8.0±1.0
|
7.5±1.0
|
|
HV-CMC
|
Mud generating capacity, m3 /t
|
200 min
|
150 min
|
160 min
|
|
LV-CMC
|
Filtration loss = 10ml
|
Addition rate, g/l
|
--
|
7.0 max
|
10.0 max
|
|
Apparent viscositymPa•s
|
--
|
4.0 max
|
6.0 max
|
|
MV-CMC
|
Addition rate,g/l
|
6.0
|
14.0
|
3.5
|
|
Apparent viscosity,mPa•s
|
15 min
|
15 min
|
15 min
|
|
Filtration loss,ml
|
9 max
|
9 max
|
9 max
|
Technical Specification of CMC for oil drilling liquids (According to GB/T5005-2001 or API)
|
Item
|
Index
|
|
Type
|
Specification
|
|
CMC-HVT
|
Viscometer 600r/min
|
Distilled water
|
30.0 min
|
|
40g/dm3 brine
|
30.0 min
|
|
Saturated brine
|
30.0 min
|
|
Filtration Loss (ml)
|
10.0 max
|
|
CMC-LVT
|
Viscometer 600r/min
|
90.0 max
|
|
Filtration Loss (ml)
|
10.0 max
|
4.Usage:
CMC Oil Drilling Grade used in fracturing fluid ,drilling fluid and well cementing fluid as fluid loss controller and tackifier. CMC can protect the shaft wall and prevent mud loss thus enhance recovery efficiency. CMC has the following characteristics:
• Excellent water retention even at low concentration.
• Excellent thickening effect.
• Good resistance to salt and temperature change.
• Imparts excellent rheological property.
5.Packing:
Packed in multiply paper bags or fiber drums (25KG), or as per customer requirement; keep dry
Chemicals
