Petroleum Reservoir Evaluation and Development ›› 2022, Vol. 12 ›› Issue (5): 809-815.doi: 10.13809/j.cnki.cn32-1825/te.2022.05.013
• Comprehensive Research • Previous Articles Next Articles
Received:
2020-09-03
Online:
2022-10-26
Published:
2022-09-27
CLC Number:
HU Depeng. Injection-production features of polymer flooding for horizontal wells and influencing factors of development effects for well groups[J].Petroleum Reservoir Evaluation and Development, 2022, 12(5): 809-815.
Table 3
Comparison of oil production of effective oil wells in well areas with different crude oil viscosity"
黏度 (mPa·s) | 见效 时间(d) | 含水95 %时 注入PV数 | 聚驱 增油量(m3) | 吨聚 增油量(t) | 聚驱提高 采收率(%) |
---|---|---|---|---|---|
<50 | 35 | 0.57 | 23 961 | 103 | 12.7 |
50~150 | 75 | 0.59 | 25 357 | 125 | 14.6 |
150~500 | 93 | 0.55 | 22 967 | 107 | 12.4 |
500~1 000 | 113 | 0.51 | 19 968 | 97 | 11.1 |
1 000~2 000 | 155 | 0.43 | 14 172 | 75 | 8.9 |
2 000~3 000 | 208 | 0.36 | 10 208 | 53 | 7.1 |
3 000~5 000 | 264 | 0.29 | 8 068 | 41 | 5.9 |
5 000~10 000 | 593 | 0.23 | 6 068 | 32 | 4.4 |
Table 7
Comparison of polymer flooding effect between normal wells and oil wells with production time later than polymer flooding time in well groups"
注采方向数 | 见效井比例 (%) | 见效 时间 (d) | 高峰期 持续天数(d) | 高峰期 日增油量 (m3) | 聚驱 增油量 (m3) | 吨聚 增油量 (t) | 提高 采收率 (%) |
---|---|---|---|---|---|---|---|
单向 | 63 | 143 | 388 | 7.5 | 16 276 | 99 | 10.0 |
多向 | 86 | 114 | 526 | 14.6 | 24 781 | 122 | 13.7 |
差值 | 29 | -138 | -7.1 | -8 505 | -23 | -3.7 |
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