Product

DRILLING GRADE

Bentonite having good thixotropic suspension properties and very low filtrate volume is selectively prepared as additive to the drilling fluid. It is widely used in petroleum drilling and drill for the pilling work eg. civil construction grade.

Petroleum industries through out the world follows the standards laid by American Petroleum Institute (API) and Oil Companies Materials Association (O.C.M.A.)

SPECIFICATIONS FOR API GRADE
REQUIREMENT STANDARD
Suspension Properties
Viscometer dial Reading at 600 r/min. Minimum – 30
Yield Point/plastic Viscosity Ratio Maximum 3
Filterate Volume Maximum 15.0 cm3
Residue of diameter grater than 75 micron. Maximum mass fraction – 4.0%
SPECIFICATIONS FOR O.C.M.A. GRADE
REQUIREMENT STANDARD
Suspension Properties
Viscometer dial Reading at 600 r/min. Minimum – 30
Yield Point/plastic Viscosity Ratio Maximum 6
Filterate Volume Maximum 16.0 cm3
Residue of diameter grater than 75 micron. Maximum mass fraction – 2.5%
SPECIFICATIONS FOR O.C.M.A. GRADE
REQUIREMENT STANDARD
Suspension Properties
Viscometer dial Reading at 600 r/min. Minimum – 30
Yield Point/plastic Viscosity Ratio Maximum – 8
Filterate Volume Maximum – 16-18 cm3
Liquid limit 400 – 600
Partical size/Fineness 85% through 200 B.S.