Description
Cationic emulsion bitumen for drilling fluid is processed by a variety of surfactants, cationic shale control agent and bitumen with a certain range of softening points by a special process.
The micron grade positively charged bitumen particles are easy to absorb to the solid particles of negatively charged, involved in the formation of mud cake, improve the quality of mud cake, the particles and the cationic shale control agent can enter the micro cracks in the borehole wall, adhesion and gather each other, so as to play the role of plugging,bridging,anti-swelling,anti-sloughing, filtration control and reservoir protection.
The minerals on the rock surface adsorb cationic emulsified bitumen for drilling fluid to make it breaking of emulsion, the bitumen grains are released to adhere to the hole wall, forming a thin and tough asphaltene film, which plays the role of sealing and insulating water. Preventing water flooding into the water-sensitive formation, the asphaltene sealing the micro-cracks of water-sensitive shale to stabilize the pore wall.
Advantages:
*Inhibit mud shale hydration and inhibit collapse of brittle hard formation
*Effectively seal the microcracks
*Obviously improve the drilling fluid lubrication and the quality of mud cake
*Reduce filtration loss and reduce drilling fluid cost
*Has good compatibility with other treating agents
*No demulsification and separation from 40°C in summer to -20°C in winter
Parameter | Specification |
Appearance | Black paste |
Density,g/cm3 | 0.90-1.10 |
API FL,mL | Lower or no change |
HTHP FL,mL | ≤30 |
Relative expansion reduce,% | ≥30 |
Cationic,meq/g | ≥0.4 |
Recommended Treatment
Cationic emulsion bitumen for drilling fluid can be directly added to various drilling fluid systems, with addition of 1.0-2.0%
Package
Packaged in HDPE drums with a net weight of 200kg. Stored in a cool, dry and ventilated place.
Handling
Avoid contact with eyes, skin and clothes, or wash with plenty of water.
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