Pseudo steady productivity evaluation and optimization for horizontal well with multiple finite conductivity fractures in gas reservoirs

被引：3

作者：

Wang J. ^{[1
]}

Jia A. ^{[1
]}

Wei Y. ^{[1
]}

Zhao W. ^{[1
]}

机构：

[1] PetroChina Research Institute of Petroleum Exploration & Development, Beijing

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2016年 / 40卷 / 01期

关键词：

Dimensionless productivity index; Finite conductivity; Horizontal well; Parameter optimization; Pseudo steady state;

D O I：

10.3969/j.issn.1673-5005.2016.01.014

中图分类号：

学科分类号：

摘要：

The fracture boundary with no flowing through has a significant influence on productivity evaluation and fracturing parameter optimization in a pseudo steady state (PSS). In this paper, the solution of pressure distribution in the PSS in a single hydraulic fracture with finite conductivity was derived incorporating an integral transformation method, and a novel productivity model of a multiple fractured horizontal well (MFHW) within rectangular formation was presented in coupling with material balance equation and pressure superposition. The model was solved using a Newton numerical iteration method. The model was used to calculate the productivity of a MFHW with regard to different fracturing parameters, and the corresponding optimum relationships were established by regressing the maximum derivatives of productivity with different fracturing parameters. The results show that the productivity of a MFHW is determined by the number of fractured sections, the spacing, length, conductivity and configuration of the fracture. The productivity can be enhanced via stimulating more fractures, reducing the interaction between fractures, restraining the no flow effect of fracture boundaries, and matching the inflow rate with that of the outflow rate of the fractures. The configuration of equally spaced multiple fractures is the optimal condition for fracture arrangement, and the optimum relation of dimensionless conductivity varies with the changes of length-width ratio and the fracture number. In practical application, a narrow parameter range around the optimum values should be selected as a reference for optimizing the fracturing parameters. © 2016, University of Petroleum, China. All right reserved.

引用

页码：100 / 107

页数：7

共 30 条

[1]

Hao M., Wang X., Hu Y., Productivity calculation of multi-fractured horizontal well in ultra-low permeability pressure-sensitive reservoirs, Journal of China University of Petroleum(Edition of Natural Science), 35, 6, pp. 99-104, (2011)

[2]

Wang B., Jia Y., Li Y., Et al., A new solution of well test model for multistage fractured horizontal well, Acta Petrolei Sinica, 34, 6, pp. 1150-1156, (2013)

[3]

Fan D., Yao J., Yao T., Et al., Parameters optimization for fractured horizontal wells based on adaptive genetic algorithm, Petroleum Geology and Recovery Efficiency, 18, 5, pp. 85-89, (2011)

[4]

Ranghvan R.S., Chen C.C., Agaewal B., An analysis of horizontal wells intercepted by multiple fractures, SPE Journal, 2, 3, pp. 235-245, (1997)

[5]

Chen C.C., Raghavan R.S., A multiply fractured horizontal well in a rectangular drainage region, SPE Journal, 2, 4, pp. 455-465, (1997)

[6]

Hao M., Hu Y., Li F., Production decline laws of fractured horizontal wells in ultra-low permeability reservoirs, Acta Petrolei Sinica, 33, 2, pp. 269-273, (2012)

[7]

Yao J., Liu P., Wu M., Well test analysis of fractured horizontal well in fractured reservoir, Journal of China University of Petroleum(Edition of Natural Science), 37, 5, pp. 107-114, (2013)

[8]

Ning Z., Han S., Cheng L., Et al., Productivity calculation method of fractured horizontal wells in low permeability oil or gas field, Acta Petrolei Sinica, 23, 2, pp. 68-72, (2002)

[9]

Wang X.D., Li G.H., Wang F., Productivity analysis of horizontal wells intercepted by multiple finite-conductivity fractures, Petroleum Science, 7, pp. 367-371, (2010)

[10]

Wang X., Zhang Y., Liu C., Productivity evaluation and conductivity optimization for vertically fractured wells, Petroleum Exploration and Development, 31, 5, pp. 78-81, (2004)

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