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Lost circulation material for abnormally high temperature and pressure fractured-vuggy carbonate reservoirs in Tazhong block, Tarim Basin, NW China
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Xiaoming SU,Zhanghua LIAN,Junwei Fang,Hanqiao XIONG,Ruoning WU,Yuan YUAN
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Table 6 Experimental results of compatibility between plugging materials and drilling fluid.
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| Formula | Test condition | Density/
(g?cm-3) | Apparent
viscosity/(mPa·s) | Plastic
viscosity/(mPa·s) | Shear
stress/Pa | Initial stress
(final stress)/Pa | API filter loss/mL | | Mud | Room temperature | 1.80 | 65 | 57 | 8 | 1.5(2.0) | 3.8 | | Mud & LCM | 1.86 | 75 | 64 | 11 | 2.0(2.5) | 3.6 | | Mud | High temperature
(200 °C) | 2.00 | 88 | 76 | 12 | 2.0(2.6) | 3.6 | | Mud & LCM | 2.05 | 97 | 80 | 16 | 2.0(3.0) | 3.2 |
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