• 采用组合钻具进行钻进,通过随套管保护壁,解决钻孔垮塌导致钻探效率岩心采取率低等技术难题

    The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.

    youdao

  • 提高绳索取心钻进效率做到:一是根据钻孔孔径钻孔所遇地层及其岩性完整程度、构造特点、风化带发育深度选择套管直径及下入深度;

    To raise wire-line drilling efficiency need to: 1. Select casing diameter and depth according to drilling depth, diameter, strata drilled and rock integrity, structure features, weathered layer depth;

    youdao

  • 一种实用可调套管医用神经外科颅骨钻孔治疗器械

    The utility model relates to a practical and adjustable cannula type cranial prick, which is a medical therapeutic tool for boring on skulls of nerve internal medicine and surgery.

    youdao

  • 一种实用可调套管医用神经外科颅骨钻孔治疗器械

    The utility model relates to a practical and adjustable cannula type cranial prick, which is a medical therapeutic tool for boring on skulls of nerve internal medicine and surgery.

    youdao

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