Definition: The word "dsn1" refers to a specific type of machine used in oil and gas exploration, specifically for gathering data about the distribution of natural gas within wells. Definition: A specific type of machine used in oil and gas exploration for gathering data about the distribution of natural gas within wells. The DSN1 typically includes multiple sensors and cameras that collect data on gas flow rates, reservoir pressures, temperature, and other parameters to aid in understanding the overall behavior of the drilling operation.