New test method for drill-bit teeth

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Springer Publishing Company

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Adaptability Theory for Study of Tool Die Impression Crumpling Process in Hot Forging of Blanks of Drilling Bit Legs

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A New Method for Calculating the Equivalent Circulating Density of Drilling Fluid in Deepwater Drilling for Oil and Gas

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Gas flow control method of recycling gas drilling technology

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International Journal of Oil, Gas and Coal Technology, Vol. 6, Iss. 6, 2013-09 ,pp. : 645-657

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Cleaning System for Weighted Drilling Muds

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