Quantitative Characterization of Interlayer Interference in Multi-Layered Sandstone Reservoirs Offshore China
- 1 Tianjin Branch of CNOOC Ltd., Tianjin, China
- 2 Tianjin Branch of CNOOC Ltd., Tianjin, China
- 3 Tianjin Branch of CNOOC Ltd., Tianjin, China
- 4 Tianjin Branch of CNOOC Ltd., Tianjin, China
- 5 Tianjin Branch of CNOOC Ltd., Tianjin, China
- 6 Tianjin Branch of CNOOC Ltd., Tianjin, China
Abstract
X oilfield is a typical multi-layer sandstone reservoir in offshore China. In the early stage, in order to obtain economic oil production, directional well was used to adopt a set of multi-layer combined production, which resulted in serious interlayer interference, water injection inrush and low reserve utilization. Based on the theory of single-phase unstable seepage flow and the theory of oil-water two-phase non-piston displacement, the author innovatively established a mathematical model of interlayer dynamic interference in multilayer sandstone reservoirs, revealed the influence law of main controlling factors such as permeability, viscosity, starting pressure gradient and reservoir type on interlayer interference, and innovatively formed a quantitative characterization theory of interlayer interference in multilayer combined oil production. The technical demarcation of offshore multi-zone combined oil production reservoir system is formulated and the recombination of oil field development system is guided.
- Zhang, J.C., He, X.R., Zhou, W.S., et al. (2015) Main Controlling Factors of Interference in Big Intervals Commingled Production Oil Wells. Journal of Southwest Petroleum University (Science & Technology Edition), 37, 6.
- Hu, G. (2012) Study on Limitation of Production Well Segment Span in Multi-Layer Reservoirs. Xinjiang Petroleum Geology, 22, 72-74.
- Xian, B., Xiong, Y., Shi, G.X., et al. (2007) Interlayer Interference Analysis of Dommingled Production in Thin Reservoirs and Its Technical Countermeasures. Special Oil and Gas Reservoirs, 14, 51-54.
- Liu, D., Zhang, F.Y., Zhu, Q., et al. (2019) Quantitative Characterization and Dynamic Law of Interlayer Interference for Multilayer Commingled Production in Heavy Oil Reservoirs by Numerical Simulation. World Journal of Engineering and Technology, 7, 379-395. https://doi.org/10.4236/wjet.2019.73028
- Xu, J.H., Qian, L.D. and Ku, E.B. (2007) Influence of Reservoir Heterogeneity on Oilfield Development Effectiveness. Fault-Block Oil & Gas Field, 14, 29-31.
- Li, Y., Tan, C.Q., Ma, S.D., et al. (2012) Research of the Counter Measures Enhancing Single-Well Production of Jihuang 37 Area. Journal of Xi’an Shiyou University (Natural Science Edition), 27, 60-63.
- Wang, Z.W., Qin, Y., Li, T., et al. (2021) A Numerical Investigation of Gas Flow Behavior in Two-Layered Coal Seams Considering Interlayer Interference and Heterogeneity. International Journal of Mining Science and Technology, 31, 699-716. https://doi.org/10.1016/j.ijmst.2021.05.003
- Kang, B.T., Jiang, B., Chen, G.N., et al. (2020) Application of Interlayer Interference Law in Multi-Layer Heavy Oil Reservoir. Petrochemical Industry Application, 39, 14-19.
- Wei, S.L., Wang, Y.Q., Gao, Z.B., et al. (2020) Analysis of Interlayer Interference Factors in Multi-Layer Commingled Production of Low Permeability Sandstone Reservoir. Chinese and Foreign Entrepreneurs, 256, 230.
- Yu, H.J., Zhu, G.J. and Tan, X.H. (2014) Study on Interlayer Interference Caused by Commingling Production and Development Strategy in Sandstone Reservoir. Journal of Southwest Petroleum University (Science & Technology Edition), 36, 101-106.
- Zhang, Y.L., Liao, X.W., Hu, Y., et al. (2018) Development Models for Offshore Heavy Oil Field in High Water Cut Stage. Lithologic Reservoirs, 30, 120-126.
- Wang, J.N., Duan, Q.G., Yu, S.H., et al. (2013) Establishment of Evaluation Index System of Layers in S Oilfield. Oil-Gas Field Surface Engineering, 32, 15-17.