Since sulfonated asphalt contains sulfonic acid groups, it has a strong hydration effect. When adsorbed on the shale interface, it can prevent the hydration and dispersion of shale particles and play a role in preventing collapse. At the same time, the water-insoluble part can fill pore throats and fractures to seal them, and can cover the shale interface to improve the quality of the mud cake. Sulfonated asphalt also plays a role in lubrication and reducing high-temperature and high-pressure filtration loss in drilling fluids.
1. It is an organic drilling fluid treatment agent with multiple functions such as leakage plugging, collapse prevention, lubrication, drag reduction, and inhibition.
2. Lubricate and reduce drag, reduce the lifting capacity and torque of drilling tools, extend the service life of drill bits, and prevent and relieve drill stuck;
3. Form a thin and tough mud cake to strengthen the well wall. Control water loss at high temperatures;
4. Control the high temperature shear strength of the mud;
5. It can be used in combination with other mud treatment agents. The recommended dosage is 1-6%.
Storage and transportation
Sulfonated asphalt easy to absorb moisture. It is packaged in kraft paper bags lined with plastic bags for external use. Store in a cool, ventilated and dry place to prevent heat, moisture, sun and rain.
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