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casing drilling
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casing drilling
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工学
套管钻井
释
casing drilling
套管钻井
用套管代替传统钻杆作为钻柱,将顶驱或转盘上的机械动力和泥浆泵的液压动力传递到钻头,套管柱在钻进的同时起到封隔井眼和地层作用的技术。
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EAS
EASA
Easel Painting
easel painting
easement
ease of articulation
easily reversible anti-cholinesterase drugs
easing tension of for extra meridians
EAST
East
east
East African
East African Community
East African Plateau
East African Railways Corporation
East African Rift Valley
East African Time
east Antarctica
East Asia Collection of University of Illinois at Urbana-Champaign
East Asia Common Culture College
East Asia Library,Stanford University
East Asia Library,University of Washington
East Asia Library,Yale University
East Asian Collection,The University of Chicago Library
East Asian Federation of Ecological Societies
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