The probability of packer sticking is increased because of the casing deformation and crustation in casing failure well.
在套损井中，由于套管变形、结垢等因素，进一步加大了封隔器卡钻的可能性。
Corrosion failure of casing in Zhongyuan oil field is a main factor that causes oil or water well abandoned.
在中原油田，套管腐蚀损坏是油水井报废的主要原因。
The mechanism of casing failure is analyzed in detail, the diagnosis and prevention for unknown well casing failure are the key for controlling the rising of casing failure speed.
详细剖析套损形成机理，对未知井套管情况进行差别和预防是控制套损上升速度的关键。
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