Table 5
Yield point and gel strength of the fluids at various temperatures (accuracy: 1 lb/100 ft2 = 0.478 Pa).
| YP (Pa) |
GS-10 s (Pa) |
GS-10 min (Pa) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Temperature (°F) | 90 | 140 | 180 | 90 | 140 | 180 | 90 | 140 | 180 |
| Base fluid | 4.780 | 3.824 | 3.346 | 2.868 | 1.912 | 1.434 | 3.346 | – | – |
| 0.25% MNC-OBDF | 5.736 | 4.302 | 4.302 | 3.824 | 3.346 | 2.390 | 4.302 | – | – |
| 0.5% MNC-OBDF | 7.170 | 4.302 | 7.170 | 3.904 | 3.346 | 3.824 | 4.780 | – | – |
| 1% MNC-OBDF | 9.082 | 6.214 | 8.604 | 4.780 | 3.824 | 4.302 | 5.736 | – | – |
| 1.5% MNC-OBDF | 10.038 | 9.560 | 10.038 | 5.736 | 4.780 | 4.780 | 6.692 | – | – |
| 2% MNC-OBDF | 10.038 | 10.994 | 10.994 | 6.214 | 5.736 | 5.258 | 7.170 | – | – |
| 0.25% NG-OBDF | 4.780 | 3.824 | 3.346 | 3.346 | 2.390 | 1.912 | 3.346 | – | – |
| 0.5% NG-OBDF | 4.302 | 3.824 | 4.302 | 3.346 | 2.868 | 2.390 | 3.824 | – | – |
| 1% NG-OBDF | 5.258 | 3.346 | 4.302 | 3.824 | 3.346 | 2.868 | 4.302 | – | – |
| 1.5% NG-OBDF | 6.692 | 3.824 | 3.824 | 4.302 | 3.824 | 2.868 | 4.780 | – | – |
| 2% NG-OBDF | 7.170 | 4.780 | 4.780 | 4.780 | 3.824 | 3.346 | 5.736 | – | – |