Analysis on Perforation Reason of Tubing in One Well

The perforation reason of the tubing in one well was analyzed by means of macro and micro examination,chemical composition analysis,mechanical property testing,energy spectrum analysis and so on.The results showed that the crack occurred and extended,which caused by the original defects,resulted in perforation in tubing at last.It was proposed that the relevant standards and user ordering technology should be strictly implemented in tubing production process.