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Academic Journal of Environment & Earth Science, 2024, 6(1); doi: 10.25236/AJEE.2024.060106.

Gas production channel unplugging technology of production well based on chemical washing


Yi Shi1, Di Gao1,2,3, Di Chen1

Corresponding Author:
Yi Shi

1College of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454003, China

2Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, 102249, China

3Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, Henan, 454003, China


The pollution of drilling fluid and the blockage of coal powder during the drilling and production of coalbed methane well will cause pollution in the near well area, reduce the permeability of coal seam, and even completely block, resulting in the failure of gas production. Therefore, it is necessary to find scientific and reasonable plugging measures, effectively communicate micro-cracks and cracks, and form gas production channels. According to the blockage types of mud pollution, water seal, water + rock seal and so on, a chemical well washing and plugging removal process is proposed, which can achieve good plugging removal effect.


Chemical well washing; Drilling fluid pollution; Production well

Cite This Paper

Yi Shi, Di Gao, Di Chen. Gas production channel unplugging technology of production well based on chemical washing. Academic Journal of Environment & Earth Science (2024), Vol. 6, Issue 1: 39-45. https://doi.org/10.25236/AJEE.2024.060106.


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