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The base muds with different concentrations of SDFL were hot-rolled under 150, 180, 200 [degree]C for 16h, respectively.
Mud systems were prepared using SDFL and other fluid loss additives.
To further establish the effectiveness of SDFL, contamination studies were performed on the base muds where the effect of contamination of 5%, 10%, 15%, 20% drill solids and 5%, 10%, 15% of 20% CaCl2 brine were measured respectively.
1 illustrated the IR spectra of humic acid (HA) and SDFL.
The relationship between cross-linking degree and the HTHP filtration control property of SDFL was investigated.
As illustrated in figure 3, SDFL gave an efficient filtration control property, addition of 14 g/[cm.
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- SDF-1 receptor