Bentonite Drilling Mud for water well 1) high-quality bentonite 2) High Viscosity 3) good ... 4) API and OCMA standard Bentonite Drilling Mud for water well:1.Bentonite Drilling Mud Character:1) We choose the ... 1) Bentonite drilling mud is used for oil and gas well drilling and civil-engineering, etc2) Bentonite drilling mud is widely ... your inquiry.Best regards, Bentonite Drilling Mud for water well