Scientist explains the cause of suffocation in a well

Professor Tran Van Sung explains that deep wells often generate toxic gases, including methane, which can cause suffocation and death within minutes if encountered.

Methane gas occupies the space of oxygen and accumulates at the bottom of deep wells, leading to suffocation.

In an interview, Professor Tran Van Sung, former Director of the Institute of Chemistry at the Vietnam Academy of Science and Technology, stated that incidents of suffocation when descending into deep wells occur frequently, yet the public remains unaware and unprepared. He emphasized that methane (CH₄) is the primary culprit for suffocation as it displaces oxygen and accumulates at the bottom of deep wells.

Methane (chemical formula CH₄, the lightest gas in the alkane series) often collects at the bottoms of deep wells. This gas is prevalent in mining tunnels and can cause explosions when ignited. It is also produced in landfills and agricultural waste sites. In addition to methane, there is an isomer called ethane (C₂H₆), which, although less abundant, is also toxic. These gases will push oxygen out and accumulate. Other gases such as carbon monoxide (CO) and carbon dioxide (CO₂) may also be present, but in smaller quantities.

The deeper the well, the more methane is present. Currently, Vietnam lacks specialized equipment for deep well exploration. However, Professor Sung advises that before descending, individuals should find a way to vent all methane gas out, then wear a gas mask before going down. “It is best to use a pump to change the air mixture, for example, using a fan to disperse the methane and circulate the air.”

The professor suggests that individuals should not descend directly into the well but test first by dropping a chicken down. If the animal suffocates in the well, it indicates the presence of toxic air, and humans should not enter. He also warns that if someone encounters a case of suffocation, others should not attempt to rescue them directly but should instead lower a rope to the bottom in case the victim is still conscious and can be pulled up.

• 400-Year-Old Chinese Stone Painting Sold for $78.2 Million
• The Thrust of the Super Rocket Set to Launch This August: A Feast for All Senses!
• Approximately 5 Billion People Will Starve if a Nuclear War Between Russia and the U.S. Erupts