Oil well anti -pollution device

The utility model belongs to the technical field of oil oil well machine parts, a oil well anti -pollution device is disclosed. The device's structure includes two left and right hub connections, can open and fixes the semicircle pipe that folds the top outer wall of two semicircles pipe on be provided with rings mechanism respectively, be provided with respectively on top and the bottom inner wall with half annular plate of oil pipe external diameter matching, half annular plate upside of bottom is provided with sewage and portals. When the device can effectively avoid oil well borehole operation to play oil pipe, sump oil water splash dirty well head operating personnel clothes, health and dirty well head equipment and ground environment to in the sump oil water direct entry oil well in the well casing that can rise, effectively reduce a large amount of clearance well head equipment and ground pollution's work load, had practicality, convenient operation's characteristics. 本实用新型属于石油油井机械配件技术领域，公开了种油井防污染装置。该装