Table 2
Summary of live crude oil properties. For each case study labeled from #01 to #13, the API gravity, the experimental EACNdo, reservoir temperature and pressure, the gas to oil ratio, the solution gas composition and EACN, and experimental and predicted EACNlo values are indicated. a this work; b determined using Equation (3) assuming EACNg = ACN of gases
| Crude oil | #01 | #02 | #03 | #04 | #05 | #06 | #07 | #08 | #09 | #10 | #11 | #12 | #13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| API gravity | 27.3 | 30 | 33 | 33 | 38 | 40 | 25.6 | 33 | 35 | 36 | 38 | 38 | 50 |
| EACNdo exp. | 14 | 14 | 13 | 13 | 16 | 12 | 14 | 12 | 15 | 16 | 15 | 15 | 9 |
| T (K) | 313 | 373 | 383 | 383 | 338 | 355 | 381 | 375 | 348 | 358 | 368 | 368 | 393 |
| P (bar) | 125 | 186 | 155 | 215 | 83 | 190 | 82 | 90 | 140 | 108 | 125 | 143 | 180 |
| Rsi (Sm3/m3) | 51 | 48 | 40 | 52 | 54 | 84 | 35 | 53 | 75 | 77 | 69 | 137 | 214 |
| xmethane | 0.359 | 0.345 | 0.291 | 0.348 | 0.400 | 0.446 | 0.261 | 0.216 | 0.290 | 0.289 | 0.294 | 0.418 | 0.339 |
| xethane | – | – | – | – | – | – | – | 0.067 | 0.107 | 0.092 | 0.082 | 0.099 | 0.256 |
| xpropane | – | – | – | – | – | – | – | 0.054 | 0.069 | 0.106 | 0.069 | 0.097 | – |
| xn-pentane | – | – | – | – | – | – | 0.016 | – | – | – | – | – | 0.022 |
| EACNg | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.1 | 1.3 | 1.3 | 1.4 | 1.3 | 1.3 | 1.5 |
| EACNlo exp. | 12.0 | 14.0 | 13.0 | 13.0 | 13.5 | 12.0 | 13.0 | 10.0 | 11.0 | 11.5 | 11.5 | 9.0 | 6.5 |
| EACNlo pred.a | 12.5 | 12.5 | 11.9 | 11.5 | 14.1 | 9.9 | 12.6 | 10.4 | 12.5 | 13.0 | 12.5 | 10.8 | 5.7 |
| EACNlo pred.b | 9.3 | 9.5 | 9.5 | 8.8 | 10.0 | 7.1 | 10.5 | 8.5 | 8.7 | 9.0 | 9.0 | 6.7 | 4.4 |