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Water Dispersible and Cationic Agent Emulsified Asphalt SFT Series Product Instruction Book
General Introduction
There is no single asphalt model existing now that is available to the temperature of a whole well. The best applicable range of each asphalt is about 20-30℃, beyond this range, asphaltene does not soften and deform and can not form compact、smooth mud cake. Thus, it cannot play a role in reducing filtration loss and anti-caving. In order to satisfy the requirements of anti-caving and lubricity of different well temperature, we make asphalt with different softening point modify into water dispersible and cationic agent emulsified asphalt anti-caving and lubricant SFT series products.
There are three paste products-minimum applicable temperature 60℃，maximum applicable temperature 140℃;there are two powder products-minimum applicable temperature 120℃，maximum applicable temperature 180℃.
Property index
Series product State
Paste
Powder
Model
SFT-70
SFT-100
SFT-130
SFT-140
SFT-160
SFT-180
Applicable temperature，℃
60～80
90～110
120～140
120～140
150～160
170～180
Appearance
Black oil base paste
Black powder
Moisture ，%
—
≤10.0
sreening（0.45mm），%
—
≥80.0
PH
—
8～10
Water soluble content，%
—
≤50.0
Oil soluble content，%
—
≥20.0
Friction coefficient rate of reduction，%
≥25.0
≥20.0
API，mL/30min
≤15.0
≤15.0
HTHP，mL/30min
≤25.0
≤22.0
Features
Both paste and powder asphalt have certain lubricity and good filtration loss lowering effect. Besides,they will not foam at a large scale. Each model has its best applicable temperature, choose the suitable model when used on site.
The common dosage of paste asphalt is 2-4%, powder asphalt is about 2%. It is added directly in to drilling fluid.
Note
This product should be stored in a cool, ventilated place to avoid the sun and rain.
Package
Water dispersible and cationic agent emulsified asphalt SFT（paste）is packed in high pressure polyethylene plastic bucket, with net weight 50kg±1.0kg per bucket.
Water dispersible and cationic agent emulsified asphalt SFT（powder）It is packed in composite kraft paper sacks, with net weight25kg±0.5kg per sack.
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