Table 6.
Experimental viscosity values and the XGBoost model estimations for four Iranian oil samples at different pressures.
| P (psia) | Real vis (c.p) | Model vis (c.p) | P (psia) | Real vis (c.p) | Model vis (c.p) |
|---|---|---|---|---|---|
| Sample 1 | Sample 2 | ||||
| 5050 | 1.013337 | 1.005351 | 5058 | 3.271139 | 3.068417 |
| 4550 | 0.994974 | 0.995953 | 4057 | 3.045688 | 2.973398 |
| 4449 | 0.991199 | 0.995935 | 3054 | 2.819787 | 2.806714 |
| 4349 | 0.987460 | 0.995935 | 2551 | 2.706499 | 2.691341 |
| 4249 | 0.983736 | 0.996364 | 2248 | 2.638256 | 2.621846 |
| 4149 | 0.980025 | 0.993490 | 2148 | 2.615733 | 2.612640 |
| 4030 | 0.975609 | 0.990494 | 2046 | 2.592760 | 2.591791 |
| 3553 | 0.999333 | 1.048907 | 1942 | 2.569337 | 2.573254 |
| 3045 | 1.024600 | 1.048801 | 1842 | 2.546814 | 2.545099 |
| 2542 | 1.062203 | 1.054982 | 1692.4 | 2.513119 | 2.523687 |
| 2039 | 1.122385 | 1.122989 | 1386 | 2.618059 | 2.595768 |
| 1532 | 1.183673 | 1.128482 | 1036 | 2.786707 | 2.510240 |
| 1030 | 1.269898 | 1.241801 | 682 | 3.069599 | 2.923910 |
| 521 | 1.380175 | 1.402066 | 330 | 3.525551 | 3.460288 |
| 14.7 | 2.132610 | 2.167524 | 14.7 | 6.746075 | 6.707733 |
| Sample 3 | Sample 4 | ||||
| 5548 | 4.000876 | 3.931077 | 5058 | 3.484792 | 3.461583 |
| 4050 | 3.689539 | 3.614249 | 4057 | 3.255271 | 3.244958 |
| 3047 | 3.484213 | 3.486671 | 3054 | 3.025292 | 3.036069 |
| 2543 | 3.381709 | 3.343235 | 2551 | 2.909958 | 2.895391 |
| 2140 | 3.294197 | 3.277449 | 2148 | 2.817554 | 2.802215 |
| 1938 | 3.250343 | 3.236980 | 2046 | 2.794166 | 2.774242 |
| 1837 | 3.228422 | 3.217844 | 1942 | 2.770319 | 2.754894 |
| 1736 | 3.205814 | 3.212879 | 1842 | 2.747390 | 2.733122 |
| 1635 | 3.182533 | 3.188726 | 1743 | 2.724690 | 2.715401 |
| 1534 | 3.159252 | 3.183109 | 1688.8 | 2.712198 | 2.714444 |
| 1454.4 | 3.140811 | 3.182876 | 1348 | 2.727040 | 2.742313 |
| 1281 | 3.233294 | 3.188648 | 1019 | 2.962749 | 2.980694 |
| 1028 | 3.369125 | 3.282739 | 688 | 3.398542 | 3.267978 |
| 773 | 3.654729 | 3.621993 | 358 | 4.025803 | 3.907511 |
| 520 | 4.026668 | 3.94458 | 14.7 | 7.854152 | 6.910652 |
| 266 | 4.522285 | 4.587628 | |||
| 14.7 | 7.734326 | 7.578169 | |||
Bubble point pressure values are shown in [bold].