Drilling fluid additives

It is investigated that core products in mud system of the foreign-invested mud companies come from abroad. It is partly because they have their own research development and production base abroad, and further, domestic drilling fluid additives cannot conform to high standards. Low-end products with low technological content and cheap price are purchased locally, such as barite, bentonite, sodium chloride, xanthan gum, etc. This not only guarantees need of drilling engineering, but also achieves profit maximization of drilling fluid additives. For core products in mud system, drilling fluid companies affiliated with CNPC, Sinopec and CNOOC all have their own additives production base or cooperators, as well as independent R D team for new materials and products. They purchase conventional