The high-efficiency composite plugging agent for drilling fluid is a mixture of various natural plant polymers, which has good water swelling and bridging plugging kinetic energy, strong adhesion, and is not limited by particle size matching compared to traditional drilling plugging agents. When used with various mud systems, it can be used to seal lost circulation layers and also protect low-pressure production layers (oil, gas, water, etc.).

Function and application: 1. It has a fast plugging speed and good effect on gaps and micro cracks. 2. It can quickly form a non permeable shielding belt with a certain strength to prevent the invasion of liquid and solid phases in the working fluid into the reservoir, which can prevent damage to the reservoir. The shielding belt can be released through reverse perforation. 3. It can significantly reduce the filtration loss of mud without affecting its rheological properties, and has excellent temperature resistance. 4. Not affected by electrolyte contamination, non-toxic, and harmless.

1. Rubber products: White carbon black is used in colored rubber products to replace carbon black for reinforcement, meeting the needs of white or semi transparent products. Silica also has super adhesion, tear resistance, heat resistance and aging resistance, so it can also replace part of carbon black in black rubber products to obtain high-quality rubber products, such as off-road tires, engineering tires, radial tires, etc.

2. Agricultural chemical products: In agricultural chemical products, such as pesticides, high-efficiency spraying fertilizers, etc., white carbon black is used as a carrier, diluent, or disintegrant. When used as an disintegrant in water dispersible granules (WDG), the suspension rate can be increased. It is recommended to use a content of about 10%. It can maintain long-lasting efficacy due to its ultra-high surface area, extremely high adsorption capacity, easy suspension, good affinity, and chemical stability. Even under rain, flushing, and hot conditions, it can remain unchanged for a long time.

3. Daily chemical products: Transparent colored and opaque toothpaste with white carbon black as filler and abrasive. This type of toothpaste has good flexibility, dispersibility, smooth and soft paste body, good abrasion resistance, and does not corrode the toothpaste tube body; It can maintain the stability of medicinal toothpaste. Especially with good compatibility with fluoride, it can avoid the disadvantage of insoluble salts produced by calcium salts as abrasives.

4. Adhesive: Used in adhesives made of natural rubber or synthetic rubber, it provides thixotropy and reinforcement, while also improving adhesion due to its extensibility, making it high-quality and cost-effective.

5. Anti caking agent: White carbon black can be used in some products to improve free flowability, such as grassland fertilizers, fungicides, grinding wheel abrasives, laundry bleaches, phenolic injection molding of urotropine, plastic products of phenols and urea, manufacturing of rubber sulfur and anti caking mixtures.

6. Paper filler: Using white carbon black as paper filler can improve the ink resistance and mechanical strength of the paper, increase whiteness, and reduce unit weight. It can effectively achieve paper lightweighting, reduce production costs, and improve paper performance. In addition, it can also be used in many industries such as fire agents, feed, cosmetics, extinction agents, pigments, paints, etc.