Manufacturers, Exporters, Suppliers of Barite API Grade

Bentonite API Grade

Bentonite API Grade – High Yield Sodium Bentonite for Drilling Muds in Kohima

Filtron Envirotech (India) is a leading manufacturer, exporter and supplier of API Grade Bentonite – a premium sodium montmorillonite clay selected for high yield and superior filtration control. This natural bentonite meets API 13‑A Section 9 specifications and is used as a viscosifier, filter cake builder, and borehole stabilizer in fresh water mud systems. Our Delhi facility processes this bentonite to ensure consistent rheology, and it is exported to drilling contractors, water well drillers, and HDD operators worldwide.

When mixed with fresh water, sodium bentonite API grade hydrates and swells to form a thixotropic gel with excellent cutting carrying capacity. It reduces fluid loss by building a thin, low‑permeability filter cake that seals permeable formations and prevents differential sticking. The high yield value (minimum 15 cP at 600 rpm) allows lower concentrations to achieve target viscosity, reducing overall mud costs. It is also used in cement slurries, tunnelling fluids, and as a sealing agent for environmental barriers.

Advantages:

  • Improves hole cleaning capacities – Provides effective cutting transport and suspension.
  • Effective filtration control agent – Reduces fluid loss into permeable formations.
  • Forms a thin filter cake with low permeability – Protects the borehole and stabilizes formations.
  • Promotes borehole stability – Prevents caving and sloughing of reactive shales.
  • Can be added directly to fresh water or fresh water‑based drilling fluids – Easy mixing without special equipment.

Physical Properties:

Properties Value
Appearance Cream to grey free‑flowing powder
Specific Gravity 2.5 – 2.65 g/cm³
Yield (API 13A Section 9) ≥ 15 cP at 600 rpm (6.25 ppb)
API Fluid Loss ≤ 15 ml/30 min
Moisture Content ≤ 10%
Residue (200 mesh) ≤ 2.5%

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