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2007
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Invention
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Device for repairing a drill pipe. The invention relates to welding and overlaying and can be use... |
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Invention
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Method for repairing a drill pipe. The invention relates to welding and overlaying and can be use... |
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2005
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Invention
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Device for installation of a profile liner in a well. A device for expansion and calibration of p... |
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2004
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Invention
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Device for arranging a shut-off valve in a well. The invention is used for expanding and calibrat... |
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Invention
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Hole opener. The invention relates to well reamer for borehole reaming within a specified interva... |
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Invention
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Hole opener. The invention relates to drilling engineering, in particular to devices for enlargin... |
