Abstract: To protect the safety of oil and gas wells,most of the oil and gas wells are protected by replacing resources and cutting off the oil and gas wells,which to a certain extent cause the waste of oil and gas or coal resources,and the coal pillars of oil and gas wells can be retained to reduce the waste of resources to a certain extent. However,the existing methods of setting up the coal pillars of oil and gas wells are conservative,and they don, t consider dynamic loading. However,there is an urgent need to study the stability of oil and gas wells under dynamic loading conditions and propose a new method of oil and gas well protection coal pillar retaining and reduce the amount of overburdened coal resources. Through FLAC^3D finite element numerical simulation,a mine in the Ordos Basin is taken as the research object. A scientific and reasonable size of coal pillar protection for oil and gas wells is determined by analyzing the oil and gas well body assemblies in terms of extrusion and shear deformation,shear stress distribution,etc.,and different methods of coal pillar retention for oil and gas wells are compared and analyzed. The results show that the new method of retaining a 200 m wide coal pillar saves about 20% of resources compared with the traditional method,which not only meets the production requirements of oil and gas wells but also saves a large amount of coal resources.