Oil container silhouette 9 months 2 Gas pipeline valve silhouette 11 months 0 Oil Drill silhouette 11 months 0 Olive silhouette 12 months 0 Oilrig silhouette about 1 year 0 Oil rig silhouette about 1 year 0 Oil rig silhouette about 1 year 2 Oil rig silhouette about 1 year 1 Oil rig silhouette about 1 year 0 Oil Lantern silhouette about 1 year 0 Diwali Lamp silhouette about 1 year 1