This system has been used in 7 wells on 3 blocks in Daqing Oilfield , and it is mainly consisted of viscosifier CXV, filtrate reducer CXF, wellbore protecting agent CXG, other inhibitors and formate.

• 该钻井液主要由提粘剂CXV、降滤失剂CXF、井壁保护剂CXG、辅助抑制剂和甲酸盐等组成的低固相体系,根据需要,还可加入消泡剂、水基润滑剂等。