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 GEP  Vol.7 No.4 , April 2019
The Residual Potential of Bottom Water Reservoir Based upon Genetic Algorithm for the Relative Permeability Inversion
Abstract: At present in the offshore oilfield, X oilfield had successfully developed bottom water reservoir with horizontal well. The development mode of single sand body of horizontal well caused water cut rose rapidly and irresistible bottom water coning. The common empirical formula of recoverable reserves obtained through statistical analysis was not applicable to the bottom water reservoir. Under the condition of as high as tens of thousands of time local scour multiple, underground seepage law had been changed. In order to improve the understanding of the remaining potential of bottom water reservoir in the ultra-high water cut stage, this research innovation proposed to carry out the flow tube simulation of the bottom water ridge. In addition, combining with the theoretical research of the quantitative characterization of the water ridge form and the vector permeability, theoretical model was established. At last, the phase permeability curve was calculated from the production data of the ultra-high water cut stage of the bottom water reservoir by combining the genetic algorithm. According to the change of water ridge and oil saturation, the mechanism of end point change of phase permeability curve was expounded, and the effective production radius of water drive oil in bottom water reservoir was put forward, which provided the basis for understanding the potential of oil field and tapping the potential in the future.
Cite this paper: Zhang, D. , Tan, J. , Yang, D. , Mu, S. and Peng, Q. (2019) The Residual Potential of Bottom Water Reservoir Based upon Genetic Algorithm for the Relative Permeability Inversion. Journal of Geoscience and Environment Protection, 7, 192-201. doi: 10.4236/gep.2019.74012.
References

[1]   Bing, S. X. (2012). Study on Relative Permeability Equation Adapted at Ultra-High Water-Cut Stage. Journal of Oil and Gas Technology, 34, 18-20.

[2]   Chen, B., Bai, Z. H., Lv, J. W. et al. (2015). Study on Relationship between Sedimentary Microfacies and Water Flooding Pore Volume as Well as Remaining Oil: Taking Lower V Oil Layers in Shuanghe Oilfield as an Example. Journal of Xi’an Shiyou University (Natural Science Edition), 30, 53-58.

[3]   Chen, Y. Q., & Tao, Z. Q. (1997). Derivation of Water Drive Cure at High Water-Cut Stage and Its Analysis of Upwarding Problem. Fault-Block Oil & Gas Field, 4, 19-24.

[4]   Fan, Z. F. (1993). The Research of Horizontal Well Productivity Formula in Bottom Water Drive Reservoir. Petroleum Exploration and Development, 20, 71-75.

[5]   Gao, Y. J., Jiang, H. Q., Wang, S. L. et al. (2016). Numerical Simulation of Microscopic Water-Oil Displacement Based on Level Set Finite Element Method. China Offshore Oil and Gas, 6, 39-42.

[6]   Kuchuk, F. J. (1988). Pressure Transient Analysis for Horizontal Wells. In SPE Annual Technical Conference and Exhibition (SPE-18300-MS). Houston: Society of Petroleum Engineers. https://doi.org/10.2118/18300-MS

[7]   Li, L. F., Zhou, F. X., Xiong, J. H. et al. (2015). Quantitative Evaluation Method of Water Flooded Degree of Oil Reservoirs Developed by Horizontal Wells and Its Application. Journal of Xi’an Shiyou University (Natural Science Edition), 5, 59-63.

[8]   Liu, X. Y., & Hu, P. (2011). A 3D Visible Physical Experiment on Horizontal Wells of Heterogeneous Reservoirs with Bottom Water. Acta Petrolei Sinica, 32, 1012-1016.

[9]   Permadi, P., & Jayadi, T. (2010). An Improved Water Coning Calculation for Horizontal well. In SPE Russian Oil and Gas Conference and Exhibition (SPE-133162-RU). Houston: Society of Petroleum Engineers.
https://doi.org/10.2118/133162-RU

[10]   Sun, Q., Zhou, H. Y., Hu, Y. et al. (2018). Calculation Method of Area Sweep Efficiency of Non-Piston Water Flooding for Inverted 9-Spot Pattern. Complex Hydrocarbon Reservoirs, 11, 52-56.

[11]   Xin, C. P. (2011). Quantitative Description of Water Cone and Study on the Well Pattern Optimization in Bottom Water Reservoir. Wuhan: China University of Petroleum (East China).

[12]   Yan, W. L., Li, Z. C., Yin, S. J. et al. (2009). A New Method to Determine Original Oil Saturation in Oil-Water Layer. Well Logging Technology, 33, 440-443.

[13]   Yin, J. L., Zhao, D. N., Dong, J. S. et al. (2012). Numerical Simulation on Factors Affecting Flooding Mechanism of Bottom Water Reservoir in Horizontal Wells. PGRE, 19, 90-92.

[14]   Zheng, H. Y. (1993). A Method of Determining Average Water and Oil Relative Permeiability Curves. China Offshore Oil and Gas, 7, 45-52.

[15]   Zheng, K., Xu, H. M., & Chen, J.-W. (2013). Study on Tong’s B-Type Water Drive Characteristics Empirical Formula. Journal of China University of Petroleum, 37, 99-108.

 
 
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