对常见故障井的修复方法，特别是用油田修井技术对比较复杂的故障进行了详细介绍和对比。
Detailed introduction and comparison are made on restoration methods of Wells with common failures, especially on comparatively complicated failures with well repairing technique of oil field.
古吉拉特邦的一些重要遗址最近已经进行大规模的修复，邦政府在去年6月也宣布，他们计划修复整个古吉拉特邦的阶梯井。
Some important sites in Gujarat have recently undergone major restoration, and the state government announced in June last year that it plans to restore the stepwells throughout the state.
通过对不同减压井淤堵机理的分析，得出了不同的修复方法及预防措施的结论。
Through analysing the clogging mechanism of different relief-wells, the conclusions are obtained on different rehabilitation methods and prevention measures.
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