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A saturated saltwater drilling fluid based on salt-responsive polyampholytes
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JIANG Guancheng,HE Yinbo,CUI Wuge,YANG Lili,YE Chenxi
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Table 9 Basic properties of drilling fluid based on HvL and LvH saturated with KCl.
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| Condition | Apparent
viscosity/(mPa·s) | Plastic viscosity/
(mPa·s) | Yield point/Pa | Dynamic plastic
ratio/(Pa·(mPa·s)-1) | Φ6/Φ3 | API fluid loss/mL | Fluid loss under high temperature and pressure/mL | Before hot-aging
After hot-aging | 69.0
66.5 | 58
56 | 12.24
10.73 | 0.194
0.192 | 5/3
5/3 | 3.0 | | | 9.7 |
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