First, the use of products
The products of mudstone, shale, hard brittle shale with ideal plugging cracks, and can inhibit the hydration swelling and inhibition of drilling cuttings dispersion and prevent spalling collapse effect, also has the resistance temperature performance (250 DEG C), compatibility strong advantages and completion fluid is suitable additive.
After using the product processing drilling fluid has stable properties, mud cake tough, dense and smooth, can effectively reduce the well diameter enlargement rate, decrease downhole accidents and improve the electrical measuring a success rate, can significantly reduce the drilling cost.

Two, technical requirements
 

Project	Index
Fineness (20 mesh excess),%	100
Water,%	≤15.0
pH value	8～10
Linear expansion ratio，%	≥ 45
In the filtration loss,ml	≤15
Apparent viscosity change value, mPa.s	-3～3
Fluorescence grade	≤ 4
High temperature and high pressure filtration, ML	≤25

Three, the use of methods
This product can be directly added to a variety of water-based drilling fluid system, for the first time recommended to increase the amount of circulating slurry 1%-3%. Field can be adjusted according to the design and the actual situation.

Four, storage and transportation
1 products are stored in a dry and ventilated place, avoid direct sunlight and rain.
2 transport and handling should be handled gently. To prevent damage to the packing, transportation should be covered.

Five, matters needing attention
In the use of the process, the staff should wear a dust mask, wear chemical safety glasses, wear anti-static work clothes. Avoid producing dust. Prevent products from entering the eyes or in contact with the skin, once the occurrence of the above situation, with water or saline flush, the situation is serious and timely medical treatment.