Research Article
Damage Mechanism of Oil-Based Drilling Fluid Flow in Seepage Channels for Fractured Tight Sandstone Gas Reservoirs
Table 1
Basic performance of OBDF (1.86 g/cm3).
| Experimental condition | Apparent viscosity (mPa·s) | Plastic viscosity (mPa·s) | Yield point (Pa) | Filter lossAPI (mL) | Filter lossHTHP-API (mL) | Emulsion stability (V) |
| Before aging | 93.0 | 86.0 | 7.0 | 0.6 | 1.6 | 984 | After aging | 67.5 | 60.0 | 7.5 | 0 | 1.6 | 959 |
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