Page 379 - Fundamentals of Reservoir Engineering

NATURAL WATER INFLUX 314

Time Pressure at the Plateau Pressure ∆p
(years) O.W.C. levels (psi)
(psia) (psia)

0 2740 (p i) 120
1 2500 2620 225

2 2290 2395 196
3 2109 2199 170
4 1949 2029 146
5 1818 1883 123
6 1702 1760 105

7 1608 1655 84
8 1635 1571 64
9 1480 1507 47

10 1440 1460
TABLE 9.2

The "end of the year values" of N p, the cumulative oil production, R p, the cumulative
GOR and PVT properties, corresponding to the pressure points given in column 2 of
table 9.2,are listed in table 9.3.

Time N p R p B o R s B g
(years) (MM/stb) (scf/stb) (rb/stb) (scf/stb) (rb/scf)

0 650 (R si) 1.404(B oi) 650 (R si) .00093 (B gi)

1 7.88 760 1.374 592 .00098
2 18.42 845 1.349 545 .00107
3 29.15 920 1.329 507 .00117
4 40.69 975 1.316 471 .00128
5 50.14 1025 1.303 442 .00139

6 58.42 1065 1.294 418 .00150
7 65.39 1095 1.287 398 .00160
8 70.74 1120 1.280 383 .00170

9 74.54 1145 1.276 381 .00176
10 77.43 1160 1.273 364 .00182
TABLE 9.3