Study on Screening Criteria of Gel-Assisted Polymer and Surfactant Binary Combination Flooding after Water Flooding in Strong Edge Water Reservoirs: A Case of Jidong Oilfield
Abstract
:1. Introduction
2. Determination of Chemical Agent Properties by Experimental Fitting
3. Simulation Study of Gel-assisted Polymer and Surfactant Flooding in Edge Water Reservoirs
3.1. Establishment of Reservoir Numerical Model
3.2. Simulation Analysis of Influencing Factors
3.2.1. Water Volumetric Multiple
3.2.2. Oil-Bearing Area
3.2.3. Injection–Production Well Pattern
3.2.4. Oil Viscosity
3.2.5. Injection Rate
3.2.6. Viscosity Ratio between Binary Flooding Solution and Crude Oil
4. Establishment of Screening Criteria
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter | Value |
---|---|
Model size (cm) | 30 × 30 × 15 |
Porosity | 0.32 |
Permeability (mD) | 2000 |
Oil viscosity (cp) | 5 |
Water viscosity (cp) | 0.45 |
Initial oil saturation (%) | 85 |
Residual oil saturation (%) | 30 |
Parameter | Value |
---|---|
Oil-bearing area (km2) | 0.3 |
Reservoir thickness (m) | 5 |
Porosity | 0.32 |
Permeability (mD) | 2000 |
Oil viscosity (cp) | 5 |
Residual oil saturation (%) | 28.2 |
Ir-reducible water saturation (%) | 40 |
Reservoir pressure (MPa) | 18 |
Reservoir temperature (°C) | 65 |
Intralayer variation coefficient | 0.7 |
Plane variation coefficient | 0.6 |
Viscosity (mPa·s) | Recovery (%) | |||
---|---|---|---|---|
Surfactant-Polymer Solution | Crude Oil | Edge Water Flooding | Binary Combination Flooding | Total |
5 | 5 | 43.8 | 5.2 | 49.0 |
20 | 20 | 35.1 | 8.1 | 43.2 |
50 | 50 | 29.8 | 10.2 | 40.0 |
100 | 100 | 25.6 | 11.9 | 37.5 |
150 | 150 | 22.8 | 12.5 | 35.3 |
Injection Rate (PV/a) | Bottom Hole Flowing Pressure of Injection Well (MPa) | |
---|---|---|
Thin-Oil Reservoir (5 mPa·s) | Heavy-Oil Reservoir (5 mPa·s) | |
0.1 | 15.37 | 46.92 |
0.2 | 16.75 | 77.85 |
0.3 | 18.12 | 108.77 |
Influence Factors | Limit Value |
---|---|
Water volumetric multiple | ≤200 times |
Oil-bearing area | ≥0.2 km2 |
Oil viscosity | ≤100 mPa·s |
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Luo, F.; Gu, X.; Geng, W.; Hou, J.; Gai, C. Study on Screening Criteria of Gel-Assisted Polymer and Surfactant Binary Combination Flooding after Water Flooding in Strong Edge Water Reservoirs: A Case of Jidong Oilfield. Gels 2022, 8, 436. https://doi.org/10.3390/gels8070436
Luo F, Gu X, Geng W, Hou J, Gai C. Study on Screening Criteria of Gel-Assisted Polymer and Surfactant Binary Combination Flooding after Water Flooding in Strong Edge Water Reservoirs: A Case of Jidong Oilfield. Gels. 2022; 8(7):436. https://doi.org/10.3390/gels8070436
Chicago/Turabian StyleLuo, Fuquan, Xiao Gu, Wenshuang Geng, Jian Hou, and Changcheng Gai. 2022. "Study on Screening Criteria of Gel-Assisted Polymer and Surfactant Binary Combination Flooding after Water Flooding in Strong Edge Water Reservoirs: A Case of Jidong Oilfield" Gels 8, no. 7: 436. https://doi.org/10.3390/gels8070436