Fluid operated vibratory jar with rotating bit
作者： James E. Hipp
DOI:
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摘要: A downhole oil well tool uses impact, reciprocal drilling and an improved rotating bit or like working member, receiving both fluid pressure weight from elongated pipe string with a flow bore in order to drive the tool. valve within housing controls end so that pressures up, then releases through member allowing load bit, creating impact. clutch rotates during prevent imprint upon formation. bias spring is provided control adjust amount of on independent weight.
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