Harm of oil drilling:

The environmental harm of oil drilling can be significant. Oil spills can occur during the extraction process, which can contaminate water sources and harm marine life. Additionally, air pollution from burning fossil fuels is a major source of air pollution and greenhouse gas emissions. The construction of oil rigs also disrupts ecosystems, destroys habitats, and can cause long-term damage to the environment.

Good advantage of antifoams and defoamers in oil drilling:

1. Antifoams and defoamers help reduce the formation of foam in oil drilling operations, which can lead to a decrease in the amount of energy needed to pump the oil. This can result in cost savings for the drilling operation.

2. Antifoams and defoamers can help reduce the risk of blowouts during drilling operations, as they help to keep foam from forming and blocking pipes or other equipment.

3. Antifoams and defoamers can also help to improve the quality of oil produced, as they help to prevent any foam from entering the oil and contaminating it.

Which defoamer is used for oil drilling?--Generally, the silicone type defoamers works with high efficiency in oil drilling process.