With good capacity of suspension and thixotropy, bentonite for directional through-passing is the
same nature with Bentonite for Drilling Mud. It also has a lots of advantages, such as low filtrate
volume, good capacity of mud-made, easydispose and etc. At the moment, many Non-dig companies have applied this kind of bentonite in many directional through-passing construction such as West-East natural gas transmission project, which has approved the bentonite for directional through-passing is the basic ideal material for all kinds of projects.