Commonly used drilling fluid materials for oil drilling are as follows:
1. Barite powder
2. Hematite powder
3. Drilling grade bentonite
4. Untreated Bentonite
5.OCMA grade bentonite
6.Attapulgite
7.Sepiolite
8. Technical grade low viscosity carboxymethylcellulose (CMC-LVT)
9. Technical grade high viscosity carboxymethylcellulose (CMC-HVT)
10. Starch
11. Low viscosity polyanionic cellulose (PAC-LV)
12. Highly viscous polyanionic cellulose (PAC-HV)
13. Drilling Grade Biopolymers
