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Drilling
containing
drilling-in
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English
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Drilling Engineering Association in Europe
欧洲钻井工程协会
drilling in
钻开生产层
drilling in
钻入
drilling rate equation in two variables
二元钻速方程
drilling-in
-balance
压力平衡钻井
drilling-in
unit
洗井和钻油层用的小钻机
drilling-in
unit
洗井或钻浅油层的小钻机
drilling-in
unit
打开生产层的钻井工具
investment in drilling engineering
钻井工程投资额
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