Research Article
The Rheology and Performance of Geothermal Spring Water-Based Drilling Fluids
Table 3
The other rheological properties of the drilling mud samples.
| | S1 | S2 | S3 | S4 | D1 |
| | Density (g/cm3) | 1.031 | 1.031 | 1.031 | 1.031 | 1.031 | | Filtration pH at 75°F | 6.0 | 7.0 | 8.0 | 8.0 | 7.0 | | Filter cake thickness (mm) | 0.13 | 0.15 | 0.12 | 0.15 | 0.11 | | Gel strength (lb/100 ft2) 10 s/10 min | 7.5/17 | 4/8 | 10/27 | 12/27 | 16/19 | | API fluid loss cc at 100 psi and amb. temperature | | | | | | | 30 s | 0.5 | 0.8 | 0.5 | 0.3 | 0.8 | | 1 min | 0.8 | 1.2 | 1.0 | 0.5 | 1.2 | | 3 min | 2.1 | 2.5 | 1.6 | 1.5 | 1.7 | | 5 min | 2.6 | 3.5 | 2.4 | 2.3 | 2.4 | | 7.5 min | 3.4 | 4.4 | 3.3 | 3.0 | 3.2 | | 10 min | 4.2 | 5.3 | 3.9 | 3.7 | 3.7 | | 15 min | 5.4 | 6.6 | 5.1 | 4.8 | 4.8 | | 20 min | 6.4 | 7.7 | 6.0 | 5.7 | 5.1 | | 25 min | 7.2 | 8.7 | 7.0 | 6.4 | 6.5 | | 30 min | 8.0 | 9.7 | 7.6 | 7.1 | 7.05 | | High-temperature fluid loss. cc at 100 psi and 212°F | | | | | | | 30 s | 2.4 | 1.0 | 3.0 | 3.0 | 3.3 | | 1 min | 2.6 | 1.8 | 3.2 | 3.2 | 4.3 | | 3 min | 3.2 | 2.8 | 3.8 | 4.2 | 5.8 | | 5 min | 3.8 | 3.8 | 4.8 | 5.6 | 6.7 | | 7.5 min | 4.9 | 5.4 | 5.8 | 6.6 | 7.6 | | 10 min | 5.6 | 6.4 | 6.7 | 7.2 | 8.4 | | 15 min | 7.2 | 8.6 | 8.4 | 8.8 | 9.9 | | 20 min | 8.8 | 10.2 | 10.0 | 10.4 | 11.4 | | 25 min | 10.3 | 12.0 | 11.2 | 12.0 | 12.8 | | 30 min | 11.4 | 13.8 | 13.6 | 14.0 | 13.0 |
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