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The biodiesel-based flat-rheology drilling fluid system
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JIANG Guancheng,SHI He,HE Yinbo
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Table 9 Basic performance of biodiesel-based flat-rheology drilling fluid
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Density/
(g·cm-3) | Test
temperature/°C | Apparent
viscosity /
(mPa·s) | Plastic
viscosity /
(mPa·s) | Yield
point/
Pa | Φ6 | Φ3 | Initial gel
strength/
Pa | Final gel
strength/
Pa | Emulsion-
breaking
voltage/V | API
filtrate/
mL | HTHP
filtrate/mL | | 1.2 | 2 | 48 | 39 | 9.20 | 8 | 7 | 3.5 | 4 | 2 035 | 1.4 | 8.2 | | 30 | 35 | 27 | 8.18 | 7 | 6 | 3.0 | 4 | | 65 | 18 | 10 | 8.18 | 7 | 6 | 3.0 | 4 | | 1.5 | 2 | 55 | 44 | 11.24 | 12 | 11 | 5.5 | 6 | 2 021 | 0.8 | 6.4 | | 30 | 39 | 30 | 9.20 | 10 | 9 | 4.5 | 5 | | 65 | 28 | 20 | 8.18 | 9 | 8 | 4.0 | 5 | | 1.8 | 2 | 64 | 47 | 17.37 | 15 | 13 | 6.5 | 8 | 1 656 | 2.8 | 11.4 | | 30 | 54 | 42 | 12.26 | 12 | 11 | 5.5 | 6 | | 65 | 47 | 36 | 11.24 | 10 | 9 | 6.0 | 8 | | 2.0 | 2 | 76 | 53 | 23.51 | 88 | 20 | 10.0 | 11 | 1 597 | 3.2 | 12.8 | | 30 | 65 | 51 | 14.31 | 19 | 17 | 9.0 | 10 | | 65 | 56 | 47 | 9.20 | 14 | 13 | 7.0 | 8 |
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