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Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids
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JIANG Guancheng,NI Xiaoxiao,LI Wuquan,QUAN Xiaohu,LUO Xuwu
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Table 6 Comparison of basic performances of several kinds of drilling fluids.
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| Formula | Density/
(g?cm-3) | Filtration/
mL | AV/
(mPa?s) | PV/
(mPa?s) | YP/Pa | (Initial gel-strength/final gel-strength)/Pa | HTHP filtration/mL | Superamphiphobic high-efficacy
water-based drilling fluid | 1.39 | 2.0 | 32 | 19 | 13 | 4.0/8.0 | 4.6 | High-efficiency water-based
drilling fluid | 1.39 | 3.0 | 38 | 26 | 11 | 4.0/10.0 | 5.0 | | Typical oil-based drilling fluid | 1.39 | 1.0 | 30 | 23 | 7 | 2.5/7.0 | 4.4 |
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