Reservoir Evaluation and Development ›› 2020, Vol. 10 ›› Issue (6): 78-84.doi: 10.13809/j.cnki.cn32-1825/te.2020.06.012
• Field Application • Previous Articles Next Articles
WANG Zhengxin1(),ZHANG Lianfeng1,YANG Lu1,LIU Yanhua1,LU Jun2,ZHANG Zhuo1
Received:
2020-06-09
Online:
2020-12-26
Published:
2021-01-07
CLC Number:
WANG Zhengxin,ZHANG Lianfeng,YANG Lu,LIU Yanhua,LU Jun,ZHANG Zhuo. Heterogeneous combination flooding system for reservoir after polymer flooding in Shuanghe Oil Filed[J].Reservoir Evaluation and Development, 2020, 10(6): 78-84.
Table 2
RF and RRF of P/PPG heterogeneous system"
注入体系配方 | 黏度/(mPa·s) | 渗透率/ 10-3 μm2 | 阻力 系数 | 残余阻力系数 |
---|---|---|---|---|
1 200 mg/L P | 27.7 | 645 | 32.3 | 2.7 |
1 200 mg/L P+600 mg/L B | 68.3 | 662 | 373.0 | 312.5 |
1 200 mg/L P+600 mg/L C | 38.6 | 653 | 88.9 | 8.1 |
1 200 mg/L P+600 mg/L D | 67.2 | 691 | 381.8 | 60.5 |
1 200 mg/L P+600 mg/L E | 63.9 | 687 | 390.2 | 50.8 |
1 200 mg/L P+600 mg/L F | 55.5 | 630 | 211.5 | 31.3 |
Table 4
Comparison of viscoelasticity and interfacial properties of different oil displacement systems"
驱油体系 | 黏度/(mPa·s) | 弹性模量G’ / Pa | 黏性模量G” / Pa | 复合模量G*/ Pa | 界面张力/ (mN·m-1) |
---|---|---|---|---|---|
1 200 mg/L P | 27.7 | 0.142 | 0.185 | 0.233 | |
1 200 mg/L P +2 000 mg/L S | 29.9 | 0.177 | 0.206 | 0.294 | 1.56×10-3 |
1 200 mg/LP +600 mg/L PPG | 56.3 | 0.334 | 0.298 | 0.448 | |
1 200 mg/L P +600 mg/L PPG+2 000 mg/L S | 60.8 | 0.396 | 0.334 | 0.518 | 3.02×10-3 |
Table 5
Comparison of oil displacement effect of different injection methods"
化学驱油体系 | 水驱采收率/ % | 一次聚驱 采收率/% | 最终 采收率/% | 二次化学驱提高 采收率/% |
---|---|---|---|---|
0.5PV P/S二元体系 | 22.3 | 42.6 | 64.4 | 21.8 |
0.1PV高浓度聚合物 + 0.35PV P/S二元体系+0.05PV 高浓度聚合物 | 24.3 | 41.4 | 62.5 | 21.1 |
0.1PV P/PPG非均相体系+0.35PV P/S二元体系+0.05PV P/PPG非均相体系 | 23.2 | 41.9 | 67.6 | 25.7 |
0.1PV P/PPG非均相体系+0.35PV P/PPG/S非均相体系+0.05PV P/PPG非均相体系 | 23.5 | 45.9 | 73.7 | 27.8 |
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