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<p>This study addresses production issues in low‑pressure gas wells. Beginning with the mechanisms, identification and diagnosis of liquid loading in such wells, we analyze the patterns of liquid accumulation. On this basis, a comparative selection of several efficient drainage processes for different types of low‑pressure gas wells is carried out, laying the foundation for optimizing well‑liquid removal in the later stages of low‑pressure gas‑field development. The results show that liquid loading in low‑pressure wells is mainly influenced by critical liquid‑carrying velocity, wellbore configuration and fluid properties, and exhibits distinct staged evolution. By establishing a multi‑parameter comprehensive diagnostic model, precise recognition of liquid‑loading status is achieved. Common efficient drainage processes include plunger lift, gas‑lift drainage and various auxiliary techniques. For different low‑pressure wells, appropriate selection and optimization of drainage technology, together with differentiated strategies, can comprehensively enhance well productivity and ultimately improve recovery.</p>

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Study on Liquid Loading Patterns of Low-Pressure Gas Wells and Selection of Efficient Drainage Processes

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • Wei Gao,
  • Yong Xu,
  • Runjia Tian,
  • Wei Liu,
  • Zhenjiang Zhou,
  • Kai Peng,
  • Jianhui Yu

摘要

This study addresses production issues in low‑pressure gas wells. Beginning with the mechanisms, identification and diagnosis of liquid loading in such wells, we analyze the patterns of liquid accumulation. On this basis, a comparative selection of several efficient drainage processes for different types of low‑pressure gas wells is carried out, laying the foundation for optimizing well‑liquid removal in the later stages of low‑pressure gas‑field development. The results show that liquid loading in low‑pressure wells is mainly influenced by critical liquid‑carrying velocity, wellbore configuration and fluid properties, and exhibits distinct staged evolution. By establishing a multi‑parameter comprehensive diagnostic model, precise recognition of liquid‑loading status is achieved. Common efficient drainage processes include plunger lift, gas‑lift drainage and various auxiliary techniques. For different low‑pressure wells, appropriate selection and optimization of drainage technology, together with differentiated strategies, can comprehensively enhance well productivity and ultimately improve recovery.