l Drilling Grade (API Grade) Bentonite
·Specification:
·Viscometer dial reading at 600rpm/min: 30 min,
·Yield point/plastic viscosity Ratio: 3.0max,
·Filtrate volume /cm3: 15.0 max,
·Residue of diameter greater than 75um: 4.0% max mass fraction.
l OCMA Grade Bentonite
·Specification:
·Viscometer dial reading at 600rpm/min: 30 min,
·Yield point/plastic viscosity Ratio: 6.0max,
·Filtrate volume /cm3: 16.0 max,
·Residue of diameter greater than 75um: 2.5.0% max mass fraction.
·Moisture: 13.0% max mass fraction.