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随油田开发的深入,套损井越来越多,套变位置不单一,修井工序呈现复杂化趋势,下小套管完井呈现一种趋势。
With the deepening of oilfield development, more and more sets of casing damage wells, different sets of casing deformation positions, complicated workover procedures and a trend of casing completion under small casing.