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in the process of drilling oil and gas wells, the fountain is an accident that people would not want to see on any of the drilling rigs. This poses an immediate threat to the safety of people and property of drilling crews and leads to environmental pollution. Typically, when a well is flowing, a high-pressure liquid (liquid or gas), especially gas accompanied by clay gravel, is ejected from the wellhead at an extremely high flow rate, forming a terrible scene of pyrotechnic growls. At the same time, the source of the accident is the fluid between the rocks, which has an extremely high pressure. when drilling to this section, pressure fluctuation occurs, which, in extreme cases, occurs when the above rocks are ejected. with the introduction of unbalanced drilling technology, the probability of well production and flowing is much higher than with conventional equilibrium drilling.