Distribution of radon-222 in natural gas and its origin mechanism analysis

The existence of radioactive gaseous radon in natural gas puts a hazardous impact on human health and gas production equipment. A review of the literature on radon concentrations in natural gas produced from gas reservoirs in China and the other countries have been studied. Radon is a decay product from ²³⁸U. Massive fault systems and fracture zones appear to play a significant role in radon concentrations in natural gas. Gas recovered from reservoirs with higher than average natural ²³⁸U contain higher than average levels of ²²²Rn.