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Evaluation of Well Spacing for Primary Development of Fractured Horizontal Wells in Tight Sandstone Gas Reservoirs

Fang Li1,*, Juan Wu1, Haiyong Yi2, Lihong Wu2, Lingyun Du1, Yuan Zeng1

1 Exploration and Development Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu, 610041, China
2 Oil and Gas Resources Department, PetroChina Southwest Oil & Gas Field Company, Chengdu, 610000, China

* Corresponding Author: Fang Li. Email: email

(This article belongs to the Special Issue: Solid, Fluid, and Thermal Dynamics in the Development of Unconventional Resources )

Fluid Dynamics & Materials Processing 2024, 20(5), 1015-1030. https://doi.org/10.32604/fdmp.2023.043256

Abstract

Methods for horizontal well spacing calculation in tight gas reservoirs are still adversely affected by the complexity of related control factors, such as strong reservoir heterogeneity and seepage mechanisms. In this study, the stress sensitivity and threshold pressure gradient of various types of reservoirs are quantitatively evaluated through reservoir seepage experiments. On the basis of these experiments, a numerical simulation model (based on the special seepage mechanism) and an inverse dynamic reserve algorithm (with different equivalent drainage areas) were developed. The well spacing ranges of Classes I, II, and III wells in the Q gas field are determined to be 802–1,000, 600–662, and 285–400 m, respectively, with their average ranges as 901, 631, and 342.5 m, respectively. By considering both the pairs of parallel well groups and series well groups as examples, the reliability of the calculation results is verified. It is shown that the combination of the two models can reduce errors and provide accurate results.

Graphical Abstract

Evaluation of Well Spacing for Primary Development of Fractured Horizontal Wells in Tight Sandstone Gas Reservoirs

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APA Style
Li, F., Wu, J., Yi, H., Wu, L., Du, L. et al. (2024). Evaluation of well spacing for primary development of fractured horizontal wells in tight sandstone gas reservoirs. Fluid Dynamics & Materials Processing, 20(5), 1015-1030. https://doi.org/10.32604/fdmp.2023.043256
Vancouver Style
Li F, Wu J, Yi H, Wu L, Du L, Zeng Y. Evaluation of well spacing for primary development of fractured horizontal wells in tight sandstone gas reservoirs. Fluid Dyn Mater Proc. 2024;20(5):1015-1030 https://doi.org/10.32604/fdmp.2023.043256
IEEE Style
F. Li, J. Wu, H. Yi, L. Wu, L. Du, and Y. Zeng "Evaluation of Well Spacing for Primary Development of Fractured Horizontal Wells in Tight Sandstone Gas Reservoirs," Fluid Dyn. Mater. Proc., vol. 20, no. 5, pp. 1015-1030. 2024. https://doi.org/10.32604/fdmp.2023.043256



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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