Carboxymethyl Cellulose Sodium(Oil Drilling Grade)

Name：

Carboxymethyl Cellulose Sodium(Oil Drilling Grade)

CAS No：

9000-11-7

Molecular Formula: [C₆H₇O₂(OH)₂CH₂COONa]_n

Structural Formula:

Property:

Carboxymethyl Cellulose Sodium (CMC-Na) is a cellulose derivative obtained by chemically modificating the natural cellulose. It is one of the most important water soluble polymers with many advantages that other natural or synthetic glues do not have.

CMC is white and flowing fine powder. It is tasteless, smelless, mould-proof, non-toxic, non-flammable and easily dissolved in water to become transparent viscose solution.

CMC solution has good properties of thickening, adhering, emulsifying, and stabilizing. membrane forming, moisture-holding, shape-holding, dispersing and anti-enzyme. The solution of CMC can be mixed with dissolvable animal glues, glycerin, sobbitol, Arabic gum, pectin, xanthic gum and dissolvable starch.

Specification:

Physical Specification of CMC for Oil drilling liquids & Oil drilling liquids properties (According to SY5093-92)

	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

			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
LV-CMC	Filtration loss = 10ml	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	8 max

Technical Specification of CMC for oil drilling liquids (According to GB/T5005-2001 or API)

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

Note:We could arrange product according to customer’s specification

Usage:

Oil drilling grade CMC used in fracturing fluid ,drilling fluid and well cementing fluid as fluid loss controller and tackifier. It can protect the shaft wall and prevent mud loss thus enhance

recovery efficiency. It 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.

Package and Storage:

Packed in multiply paper bags or fiber drums (25KG), or as per customer requirement; keep dry