论文部分内容阅读
现有的检测技术只能检测被检测对象上已发生的裂纹,不能预测潜在的裂纹,而裂纹缺陷引发套损井套管的应力集中,致使套损井逐年增加.由铁磁材料的磁致伸缩方程,推导了磁记忆方程,并探讨了磁记忆的量化;通过套管加力检测实验,得到了套管所受应力与磁记忆响应的对应关系,证明金属磁记忆检测方法可以分级评价套管的应力状况,对不同的评价等级给出了相应的预防措施,其结果可为套损井的预测提供依据.
The existing detection technology can only detect the crack occurred on the detected object, and can not predict the potential crack, and the crack defect causes the stress concentration of the casing of the casing and causes the casing damage to increase year by year. The magnetism caused by the ferromagnetic material Telescopic equation, the magnetic memory equation was deduced, and the magnetic memory quantification was discussed. The corresponding relationship between the stress and the magnetic memory response of the bushing was obtained by the bushing force test. It is proved that the metal magnetic memory testing method can be applied to the classification evaluation The stress conditions of the pipes give corresponding precautionary measures for different evaluation grades, and the results can provide the basis for the prediction of casing damage.