Petroleum packer

The utility model discloses a petroleum packer which comprises an upper connector and an upper pipe body located at the position of the lower end of the upper connector, a rubber sleeve is connected to the upper portion of the inner side of the outer wall of the upper pipe body in a sleeved mode, a lower pipe body is arranged at the position of the lower end of the upper pipe body, and a connecting sleeve is arranged at the position of the lower end of the lower pipe body. A lower connector is arranged at the lower end position of the connecting sleeve, a limiting column is fixed to the inner position of the mounting frame, the telescopic rod stretches out and draws back through a telescopic spring, so that the limiting column enters the inner position of the telescopic rod, and a sleeving frame is fixed to the outer side end face of the telescopic rod. The inner portions of the sleeving frames are sleeved with rollers, the outer portions of the upper pipe body and the lower pipe body are sleeved with install