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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 2 Basic performance of SSDF based on HvL and LvH.
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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 | 80
79 | 66
66 | 14.31
13.29 | 0.217
0.201 | 6/4
5/4 | 2.1 | | | 8.0 |
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