With water_injection, creep and gliding of a mud_rock layer are main reasons for casing failure.
在注水条件下，泥岩蠕变引起层间滑移是套管损坏的主要原因。
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。
Daqing oil fields have been exploited for thirty eight years, the casing failure in petroleum tube is becoming more and more serious.
大庆油田注水开采三十八年来，油井和注水井套管损坏现象日趋严重。
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