Research Article
A Comparative Study of Diesel Oil and Soybean Oil as Oil-Based Drilling Mud
Table 4
Viscometer readings of the formulated mud samples.
| | Viscometer speed (rpm) | Diesel oil | Soybean oil | | Dial reading | Shear stress (lb/100 ft²) | Dial reading | Shear stress (lb/100 ft²) |
| | 600 | 51 | 54.06 | 38 | 40.28 | | 300 | 35 | 37.1 | 24 | 25.44 | | 200 | 27 | 28.62 | 16 | 16.96 | | 100 | 18 | 19.08 | 9 | 9.54 | | 6 | 9 | 9.54 | 3 | 3.18 | | 3 | 7 | 7.42 | 2.3 | 2.438 |
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