Research Article
Damage Mechanism of Oil-Based Drilling Fluid Flow in Seepage Channels for Fractured Tight Sandstone Gas Reservoirs
Table 5
Rheological test of oil base drilling fluid in its original state.
| Shear rate (S-1) | Viscosity (mPa·s) | 40°C | 50°C | 60°C | 70°C | 80°C | 90°C |
| 1021.38 | 38.87 | 36.72 | 32.51 | 28.88 | 25.75 | 23.20 | 510.69 | 47.97 | 45.43 | 39.16 | 33.88 | 30.55 | 27.41 | 340.46 | 60.80 | 57.57 | 50.23 | 43.18 | 37.89 | 31.13 | 170.23 | 82.24 | 77.54 | 67.56 | 57.57 | 51.70 | 41.71 | 10.214 | 597.23 | 538.49 | 509.12 | 421.00 | 381.84 | 323.09 | 5.107 | 1507.76 | 1076.97 | 979.07 | 861.58 | 783.25 | 685.35 | 1.702 | 3289.66 | 2995.94 | 2643.48 | 2408.50 | 2173.53 | 1879.81 | 0.851 | 6344.35 | 5991.88 | 5051.98 | 4464.54 | 4112.08 | 3642.12 |
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