The test result shows that the apparent viscosity of bentonite drilling fluid increases 25% when 1% QYJ is added,which is better than kalium polyacrylate,amphion coater FA367 and 10%KCl.

• 试验表明:1%25QYJ膨润土表观黏度上升率仅为25%25,优于聚丙烯酸钾、两性离子强力包被剂FA367和10%25KC l;