Underwater baseplate installation in advance is needed for semi-submersible platform pre-drilling well.
平台预钻井，需要预先安装水下基盘。
The precision of stack velocity and interval velocity provided by common NMO correction processing method can't meet the need of predicting the pre-drilling press.
常规动校正处理方法提供的叠加速度及层速度精度不能满足钻前压力预测的需要。
In order to reduce platform fabrication period and achieve early start-up, both pre-drilling and platform drilling methods are adopted in developing Pinghu oil & gas field.
为了缩短平台建设周期，使之早日投产，平湖油气田采用了预钻井和平台钻井相结合的方式。
"[ANP] understands that drilling in pre-salt reservoirs comes with risks of identical nature as those occurred at the site of the oil spill, and even amplified by greater depth," read the release.
新闻稿中写到：“ANP认为，盐下储油层钻探活动的危险在性质上与发生在此次漏油事故现场的危险相同，甚至可能会因为深度更深而更具危险。”
High viscosity pre gelatinized starch is widely used in feed, casting, oil drilling, corrugated boxes, building materials and other industries.
高粘度预糊化淀粉广泛应用于饲料、铸造、石油钻井、瓦楞纸箱、建材涂料等行业。
After the various visual defects during drilling processes were analyzed, the importance of drilling with compressive pre stress was presented.
根据复合构件加工中的各种缺陷，分析了采用预压应力钻削对改善表面加工质量的重要性。
Surface pre-orienting drilling technology is employed for preventing wellbore from collision and channeling in CDXA Cluster Wells.
为防止井眼碰撞、窜槽现象的发生，CDXA井组采用了表层预定向钻井技术。
The smooth tie-back of pre-drilled wells proves that Pinghu drilling template and all secondary structures for the tie-back are very successful.
平湖油气田预钻井顺利回接的实践证明，平湖钻井基盘和回接辅助结构技术是非常成功的。
The field test indicated that the developed drilling rig is appropriate for underground pre-drainage of coal seams.
现场试验表明，这是一种适于井下工作面钻进瓦斯预抽放短钻孔的轻便高效钻机。
There were two main sources of water supply for a city in the Pre-Qin period, one was drilling Wells for water, the other was digging ditches to draw water.
先秦时期城市的给水主要来源有两个，一是凿井取水，二是穿渠引水。
There were two main sources of water supply for a city in the Pre-Qin period, one was drilling Wells for water, the other was digging ditches to draw water.
先秦时期城市的给水主要来源有两个，一是凿井取水，二是穿渠引水。
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