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Table 2 Evaluation results of drilling fluid rheological properties

From: Preparation and application of melamine cross-linked poly ammonium as shale inhibitor

T (/°C) Additives AV (/mPa s) PV (/mPa s) YP (/Pa) YP/PV (Pa/mPa s) FL (/mL) tg
25 Blank 3.2 1.9 1.2 0.6221 11.8 0.0628
0.01% DEM-8 2.5 1.5 0.8 0.4892 14.9 0.0782
2.0% KD-03 6.9 2.7 3.7 1.2436 6.3 0.1056
2.0% modified xanthan gum 7.4 4.4 3.0 0.6213 5.4 0.2019
2.0% KD-03 + 0.01% DEM-8 4.8 3.3 1.5 0.4126 8.0 0.0716
2.0% starch + 0.01% DEM-8 5.0 3.0 1.9 0.5987 5.8 0.0473
120 Blank 2.4 1.7 0.6 0.3616 13.6 0.1698
0.01% DEM-8 1.9 1.3 0.6 0.4659 18.5 0.1127
2.0% KD-03 5.4 4.8 0.4 0.0784 10.5 0.1314
2.0% modified xanthan gum 10.1 8.7 2.0 0.2347 6.3 0.1221
2.0% KD-03 + 0.01% DEM-8 4.1 2.9 1.1 0.3521 10.1 0.0716
2.0% starch + 0.01% DEM-8 8.4 6.5 1.7 0.2498 5.0 0.0472
150 Blank 2.8 2.6 0.1 0.0318 14.8 0.0541
0.01% DEM-8 2.1 1.5 0.5 0.3011 16.3 0.0978
2.0% KD-03 4.8 3.1 1.6 0.4821 15.1 0.0391
2.0% modified xanthan gum 6.2 3.7 2.5 0.5987 10.1 0.0911
2.0% KD-03 + 0.01% DEM-8 3.2 2.0 1.2 0.5418 16.1 0.0619
2.0% starch + 0.01% DEM-8 6.7 4.0 2.6 0.5986 10.1 0.0554