Liquid Casing is the light yellow or yellow flow free particle mainly comprised of natural fibrous, filler particle and surfactant. It is used as a loss circulation material in all kinds of water base drilling fluids. Under the unidirectional pressure of drilling fluids, it is able to seal formation effectively. It is especially effective to seepage loss.

It could be put into all types of water base drilling fluid directly. The actual consumption depends on the loss condition while drilling. Normal dosage is 1.0-2.0%.

The main composition of LCM is mica, nutshell, and vegetation fabric grain. This product is a brown grain, using as excellent blocking agent for lost circulation formation. In addition, it can be used for reservoir protection.

It applies for all kinds of fluid systems using for lost circulation formation blocking. Suggested treatment is 3.0-5.0 %.

The calcium carbonate fiber (BZ-FPA) is a plugging agent developed by our scientific research institute. It is a mixture of grey and white powder which consist of diatomite, calcium carbonate, fiber, metal salt.

The modified calcium carbonate fiber (BZ-FPA) is a powder and fiber product, which can be used directly in various water base and oil base drilling fluid system. The recommend add amount is 20.0%-30.0%。

The calcium carbonate fiber (BZ-DSA) is a plugging agent developed by our scientific research institute. It is mainly composed of plant fiber, rigid particle, mineral fiber.

Acid soluble fiber BZ-DSA are powder and fiber products, which can be used directly in various water based and oil based drilling fluid systems. It is recommended to add an amount of 1%-4%.

The Synthetic fiber BZ-PPF is a plugging agent developed by our scientific research institute. It is consisted by linear organic polymer polymer with different length, divided into three models of I, II and III.

The synthetic fiber BZ-PPF is a white（natural color）bunchy monofilament fiber product, which can be used directly in various water base and oil base drilling fluid system. The recommend add amount is 0.05%-1.0%.

The shaped calcium carbonate BZ-SCC is a plugging agent developed by our scientific research institute. It is consisted by natural mineral with different particle size and acid soluble. BZ-SCC is divided into three models of I, II and III.

The shaped calcium carbonate BZ-SCC is a flake solid product, which can be used directly in various water base and oil base drilling fluid system. The recommend add amount is 2.0%-12.0%.