The outer casing packer can be used in the troublesome Wells in which the high pressure gas channeling and the loss of circulation occur, to improve the cementing quality.

It is ideal for sealing all the random gaps between dummy bar head and mould copper plate, to prevent the hot metal infiltration and break out while casting.

Objective: to investigate the diagnosis and treatment of pulmonary embolism in patients with primary lung cancer in relation to thoracotomy, and to decrease the rate of leak-diagnosis.