The capacity of a large gas field is up to hundreds of billions of cubic metres, and percentage of the CO2 volume in raw gas is 8%~10%. Estimated by survey data and empirical equations, over 60% of the total emission from the gas field can be absorbed and utilized by regional crops and vegetation, and nearly a million tons per year exhausted. Based on analysis of mechanism and effect of CO2 influence on regional plants, soil and atmosphere, approaches for regional ecological restoration are put forward, including the approach of regional crops restoration, other plants restoration, ecological landscape reconstruction, and CO2 reduction technologies. This study provides reference for sustainable development of other gas field in low carbon era.
Geochemical characteristics of natural gas in tight sandstone of the Chengdu large gas field, Western Sichuan Depression, Sichuan Basin, China