Productivity prediction of fractured horizontal wells with low permeability flow characteristics

    Wen Jing Affiliation
    ; Luo Wei Affiliation
    ; Yin Qingguo Affiliation
    ; Wang Hongying Affiliation
    ; He Yongming Affiliation
    ; Zhao Yarui Affiliation


Horizontal well and large-scale fracturing are revolutionary technologies in  petroleum industry. The technologies bring obvious economic benefits to exploiting unconventional oil and gas reservoirs with low permeability, ultra-low permeability and shale gas. With the increasingly extensive application of these technologies, other correlated technologies have also gained great development. However, low-permeability reservoirs exhibit complicated features and horizontal well fractures have complex shape. The existing methods for the productivity prediction of fractured horizontal well in low-permeability reservoirs rarely consider the influencing factors in a comprehensive manner. In this paper, a horizontal well seepage model of casing fracturing completion was established according to the superposition principle of low-permeability reservoir and the relationship between potential and pressure, by which model the seepage characteristics of low-permeability reservoirs could be fully described. Based on the established new seepage model, a new targeted model with coupling seepage and wellbore flow was established for the productivity prediction of low-permeability fractured horizontal well. Finally, the new targeted model was verified through field experiment. The experimental results confirmed the reliability of productivity prediction by the proposed model. Sensitivity analysis was then performed on the parameters in the proposed model.

Keyword : horizontal well, seepage model, casing fracturing completion, low-permeability reservoir, productivity prediction, coupling seepage and wellbore flow

How to Cite
Jing, W., Wei, L., Qingguo, Y., Hongying, W., Yongming, H., & Yarui, Z. (2019). Productivity prediction of fractured horizontal wells with low permeability flow characteristics. Journal of Environmental Engineering and Landscape Management, 27(2), 82-92.
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Apr 29, 2019
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