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Oil / petroleum
containing
眼杆
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加大水眼钻杆接头
extrahole tool joint
扩眼导杆接头
reaming pilot adapter
裸眼/钻杆中途测试
open hole drillstem test
裸眼/钻杆环空
open hole/dr ill pipe annulus
钻杆井眼间环空
drilling pipe hole annulus
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