针对H2S给油田钢铁管材、设备造成巨大破坏的严重情况，分析了H2S对油、套管腐蚀机理。
It is very serious situation that H2S gas corrodes iron and steel pipe, equipments cause huge destroy in oil field, and analyses the principle that H2S gas corrode tubing, casing.
套管外水泥环的破坏是导致管外串槽、套管外腐蚀的原因之一。
Destruction of cement sheath outside casing is one of the causes for channeling and corrosion.
介绍了国内外岩屑床破坏工具和可膨胀套管扶正器的研发和室内试验、现场应用情况；
The development of said tool and casing holder abroad is introduced, lab experiment and onsite application are introduced as well.
套管(2)和连接管(10)之间的连接只有通过破坏所述两个部件中的至少一个才能够分离。
The connection between the sleeve (2) and the connecting piece (10) can only be separated by the destruction of at least one of said two parts.
计算结果表明，在非均匀载荷情况下，套管强度破坏的危险性会增加。
The computation result shows that the risk of casing destruction will increase under the condition of non-uniform load.
盐层的塑性流动对井筒完整性是巨大的威胁，会对水泥环、套管造成破坏。
One unique threat to well integrity from salt zones is plastic flow.
盐层的塑性流动对井筒完整性是巨大的威胁，会对水泥环、套管造成破坏。
One unique threat to well integrity from salt zones is plastic flow.
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