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- Cutting Liner Concrete on Vault of Tunnel by Shallow Bore Hole Presplitting Blasting 浅孔预裂爆破切割隧道拱顶衬砌混凝土
- Stamp-tax, press the flower, engraving and bore hole the series ceiling. 印花、压花、浮雕、穿孔系列天花板。
- Illustrated shallow bore high pressure to note water method and note water result in detail. 详细地陈述了浅孔高压注水方法及注水效果。
- Bears hole up for the winter to go by. 熊蛰伏在穴中过冬。
- Bears hole up for the winter to go by . 熊蛰伏在穴中过冬。
- The function of an auger is to bore holes. 麻花钻的功用是钻孔。
- Above the inversion point the temperature in the bore hole decreases as the depth decreases. 在反向点以上，井孔内的温度将随着深度的变浅而下降。
- The contact between drillstring and bore hole wall in the process of horizontal drilling is of large area and geometrically nonlinear. 长中半径水平井钻柱与井壁的接触问题是大面积接触的几何非线性问题。
- HRS88-1, borehole is another Quaternary borehole drilled after Shun-5 bore hole in the north of the Beijing Plain. HR88－1孔是北京平原区北部继顺5孔之后，又一重要的第四系钻孔。
- This tech has feature of measuring full data, saving operation time and losing cost which avoids bore hole disturbance and killing fluid influence. 该技术测取资料齐全,节约作业时间,降低作业成本,避免了井筒干扰和压井液的影响。
- Pumps can bring water from mains water storage tanks or bore holes. 水泵可以从主蓄水池或钻孔中抽水。
- A series of new formulae for bore hole projection analysis and their applicability for various bore structures and models are suggested. 本文针对现行钻孔投影解析法存在的问题,提出钻孔投影计算公式与投影计算孔段的结构有关,即孔口位置(是否在勘探线上)、岩层走向及勘探线三者间的相互位置不同,其计算公式也不同。 据此,提出了196种孔段平面结构和18种模式的钻孔走向投影水平增量计算系列新公式。
- As a typical example, the contact-impact problem between the drillstring and the bore hole wall in oil field has been calculated and analysed. 文中针对石油工程中钻柱这类典型的细长杆与圆形井壁的接触碰撞问题进行了求解。
- The functions of trenchless rig's driving mechanism affect its drilling efficiency, bore hole quality and other technologyical performances directly. 非开挖钻机给进机构的性能好坏直接影响钻机钻进效率、钻孔质量及钻机各项技术性能的发挥。
- But by many times of field applications,some shortages for bore hole selective tester is tested which needs a good completion and dev... 但经过多次现场使用,证实全通径选择测试阀还存在某些不足,需要进一步完善和改进。
- Used to bore hole in fabric, leather, paper and other materials.Switzerland technilogy and import steel reamer is surable,and bore.... 用于织物、皮革、纸张及其它材料的样品打孔。瑞士技术设计，钻头风格独特，样品打孔操作轻松简便。
- Influenced by effect of bore hole afterflow,a long closes time is needed for pressure build up test in low permeability reservoir. 受井筒续流效应的影响,低渗透油藏的压力恢复试井需要较长的关井时间。
- It is only shallow people who judge by appearances. 只有浅薄的人才会以貌取人。
- The results show that the contact -impact problem between the slender rod and the wall of a round hole, such as the drillstring and the bore hole wall, can be solved better. 结果表明,动力间隙元能较好地解决细长杆(如钻柱)与圆孔孔壁(如井壁)的接触碰撞问题。
- Meanwhile,the downhole motor and MWD are not affected and wellbore trajectory can be controlled because of the continuous fluid phase flow throughout the bore hole. 同时由于从井口到井底始终存在着连续的液相流,常规井下动力钻具和随钻仪器的性能不受影响,可以进行正常的井眼轨迹控制。
