Research and Application for Alternate Production Technology of Dual-Branch Horizontal Wells in an Offshore Oilfield
Abstract
:1. Introduction
2. Research on the Drainage Radius of Horizontal Wells in Bottom-Water Reservoirs
2.1. The Drainage Radius Based on Reservoir Engineering Methods
2.2. Establishment of the Maximum Drainage Radius Chart of Horizontal Wells
3. Research on Natural Shut-In Coning Control Mechanism in Bottom-Water Reservoirs
3.1. The Natural Shut-In Coning Control Mechanism Research Based on Numerical Simulation Methods
3.2. The Analysis of Natural Shut-In Coning Control of Horizontal Wells in Bottom-Water Reservoirs
4. Research and Application of the Alternate Production Technology with Dual-Branch Horizontal Well in Bottom-Water Reservoirs
4.1. A Brief Introduction of the Construction Process
4.2. The Implementation Effect of Alternate Production Technology with Dual-Branch Horizontal Wells
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Oil Viscosity mPa·s | Layer Thickness m | Permeability 10−3 μm2 | Horizontal Section Length m | Pressure Difference MPa | Pressure Gradient MPa/m |
---|---|---|---|---|---|
142 | 10 | 3000 | 300 | 2~8 | 0.018 |
Oil Viscosity mPa·s | Layer Thickness m | Kv/Kh | Height of Water Avoidance m | Grid Size m | Daily Liquid Output m3/d | Bottom-Water Types |
---|---|---|---|---|---|---|
3~325 | 5~20 | 0.1 | 18 | 25 × 25 × 1 | 1200 | Carter–Tracey model |
Horizontal section length m | Porosity % | Permeability 10−3 μm2 | Bottom-water thickness m | Model dimension | Control mode | Oil density Kg/m3 |
400 | 30 | 1000~6000 | 2~60 | 80 × 40 × 40 | Fixed liquid rate production | 850~980 |
Oil Viscosity mPa·s | 100~425 | 50~100 | <50 |
---|---|---|---|
Typical representative | Ming Upper Formation | Ming Lower Formation | Guantao Formation |
Shut-in coning effect | general | comparatively good | good |
Recommended time for shut-in coning | 12~36 months | 3~6 months | about 3 months |
Well No. | Old Horizontal Wellbore | New Sidetracking Horizontal Wellbore | Old Horizontal Wellbore Resumption | Subtotal ×104 m3 | |||
---|---|---|---|---|---|---|---|
Time | Accumulated Oil Production ×104 m3 | Time | Accumulated Oil Production ×104 m3 | Time | Accumulated Oil Production ×104 m3 | ||
M1H/M1H1 | 7 July 2013 | 4.60 | 18 June 2019 | 1.71 | 1 November 2022 | 0.24 | 6.55 |
M2H/M2H1 | 3 August 2013 | 5.45 | 11 June 2019 | 2.19 | 14 August 2022 | 2.68 | 10.32 |
M3H/M3H1 | 7 September 2013 | 5.75 | 16 April 2019 | 1.56 | 28 March 2021 | 4.76 | 12.07 |
Subtotal | 15.80 | 5.45 | 4.76 | 28.95 |
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Zhang, D.; Li, F.; Li, Y.; Zheng, X.; Liu, C.; Liu, H.; Wang, X. Research and Application for Alternate Production Technology of Dual-Branch Horizontal Wells in an Offshore Oilfield. Processes 2024, 12, 1753. https://doi.org/10.3390/pr12081753
Zhang D, Li F, Li Y, Zheng X, Liu C, Liu H, Wang X. Research and Application for Alternate Production Technology of Dual-Branch Horizontal Wells in an Offshore Oilfield. Processes. 2024; 12(8):1753. https://doi.org/10.3390/pr12081753
Chicago/Turabian StyleZhang, Dong, Fenghui Li, Yanlai Li, Xu Zheng, Chunyan Liu, Hongjie Liu, and Xiang Wang. 2024. "Research and Application for Alternate Production Technology of Dual-Branch Horizontal Wells in an Offshore Oilfield" Processes 12, no. 8: 1753. https://doi.org/10.3390/pr12081753