Study on Advanced Water Injection Time in Low Permeability Reservoir

Lijun Wang, Linli Wei

.

DOI: 10.4236/epe.2011.32025                

Abstract

A certain formation pressure level must be kept due to the threshold pressure of the low-permeability reser-voir during the seepage. Advanced water injection can keep the formation pressure at a higher level and keep a higher pressure gradient, which is an effective way to develop low-permeability reservoir. Based on the mechanism of advanced water injection and characteristic of porous flow in low permeability reservoir, a seepage model considering threshold pressure gradient is established to determine the formation pressure distribution at anytime as the water is injected at a constant speed. The optimum water injection time for the advanced water injection technology can be determined by using this model. The calculated result coincides basically with the numerical simulation result, which indicates that the model put forward in this paper is feasible.

Keywords

Advanced Water Injection, Injection Time, Reservoir Pressure, Threshold Pressure Gradient

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	R. F. Wang, X. L. Li, B. Li, Y. H. Wang, Li. M. Kang and Z. Q. Bai, “Timing of Rational Advanced Water Injection and Limit Water Injection,” Henan Petroleum, Vol. 17, No. 6, 2003, pp. 21-23.
[2]	R. F. Wang, Z. Q. Song, H. Yong, L. Zhao and B. Hu, “Utilizing Advanced Water Injection to develop Low Permeability Pool,” Fault-Block Oil and Gas Field, Vo. 10, No. 3, 2003, pp. 43-45.
[3]	Y. T. Li, Z. Y. Liu, Q. H. Lv, X. G. Wu and Z. Y. Zhang, “Research and Application on Technology of Advance Water Flooding in Guyunji Oilfield,” Special Oil and Gas Reservoirs, Vol. 14, No. 5, 2007, pp. 58-60.
[4]	D. P. Li, “The Development of the Low Permeability Sandstone Oilfield,” Petroleum Industry Press, Beijing, 1995, pp. 174-177.
[5]	P. C. Liu, F. H. Li, K. Li and Y. D. Wang, “Advance Water Injection in Reverse Nine-Spot Well Pattern in Block 119 of Xinli Oilfield,” Journal of Oil and Gas Technology, Vol. 29, No. 6, 2007, pp. 120-123.
[6]	F. J. Ma, J. C. Hu, J. Zhuang, Q. L. Shi and Q. Wu, “The Application and Practice of Advanced Water Injection in Low Permeability Reservoir of XinLi,” Special Oil and Gas Reservoirs, Vol. 12, No. 3, 2005, pp. 47-49.
[7]	Z. Y. Zhan, X. M. Wu, X. J. Liu and H. Y. Qi, “Development Technique and Results Interpretation of Advance Water Flooding in Wuqi Oilfield,” Inner Mongulia Petrochemical Industry, No. 8, 2007, pp. 191-193.
[8]	J. H. Wang, “Low Permeable Oilfield to Run before to Note the Research of Water,” Fault-Block Oil and Gas Field, Vol. 12, No. 3, 2005, pp. 53-54.
[9]	J. X. Chen, Q. H. Huang and L. Sun, “Application of Advanced Water Flooding in Low Porosity and Permeability Oilfield,” Inner Mongulia Petrochemical Industry, No. 10, 2005, pp. 102-104.
[10]	Q. J. Che, J. A. Lei, Y. X. Ran and Z. Y. He, “Effects of Advanced Water Flooding in Extra-Permeability Oilfield Development,” Pertroleum Geology and Oilfield Development in Daqing, Vol. 22, No. 1, 2003, pp. 20-22.
[11]	C. S. Zhu, L. S. Cheng and S. J. Zhang, “Approximate solution for non-steady flow in Low-permeability reservoir,” Journal of Southeast Petroleum University, Vol. 30, No. 4, 2008, pp. 69-72.
[12]	S. Q. Li, L. S. Cheng, X. S. Li and F. Hao, “Non-Linear Seepage Flow Models of Ultra-Low Permeability Reservoirs,” Petroleum Exploration and Development, Vol. 35, No. 5, 2008, pp. 606-612. doi:10.1016/S1876-3804(09)60092-6
[13]	M. G. Zhao, H. F. Zhou and D. F. Chen, “Investigation and Application on Gas-Drive Development in Ultra-Low Permeability Reservoir,” Journal of Hydrodynamics, Vol. 20, No. 2, 2008, pp. 254-260. doi:10.1016/S1001-6058(08)60054-2
[14]	Z. D. Lei, S. Q. Cheng, X. F. Li and H. P. Xiao, “A New Method for Prediction of Productivity of Fractured Horizontal Wells Based on Non-Steady Flow,” Journal of Hydrodynamics, Vol. 19, No. 4, 2007, pp. 494-500. doi:10.1016/S1001-6058(07)60145-0
[15]	M. L. Zhang and Y. M. Shen, “Study and Application of Steady Flow and Unsteady Flow Mathematical Model for Channel Networks,” Journal of Hydrodynamics, Vol. 19, No. 5, 2007, pp. 572-578. doi:10.1016/S1001-6058(07)60155-3
[16]	Y. F. Zhai, “Fluid Mechanics in Porous Medium,” Petroleum Industry Press, Beijing, 2003, pp. 61-62.
[17]	D. F. Wang, Z. X. Li, J. Y. Zhao, Y. H. He and F. Hao, “Advance water-flooding theory for low-permeability reservoirs and its application,” ACTA Petrolei Sinica, Vol. 28, No. 6, 2007, pp. 78-81.