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- However, with weight down and drilling rate up, vibration became unacceptable. 然而, 与重量 ??落和演练率在,上面震动变成无法接受。
- In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate. 延长油矿管理局在蟠龙、子长等主生产区经常遇到严重漏失井,直接影响了钻井速度。
- The composite drilling is also successfully applied and the drilling rate increases 66%.Reasonable BHA can effectively control the well trajectory. 在小井眼开窗侧钻工艺中成功应用复合钻井技术，钻井速度提高了66%25，选择合理的钻具组合可对井眼轨迹进行有效的控制。
- PDC bit application effect are limited by short tripping time to avoid borehole underguage during drilling, drilling rate always decreased after short tripping. 但PDC钻头的使用效果与PDC钻头在钻进过程中短程起下钻的次数有很大关系,每次短程起下钻后机械钻速都要明显地降低。
- The rock drilling rate, service life and tungsten carbide toothavailability of the series of bits are obviously better than those of chip and button type bits. 该系列钎具凿岩速度、寿命和硬质合金片齿有效利用率均显著优于片状和球齿钎具。
- Testing and analysis of the vibration of ZJ15 rig substructure at two drilling rates are made. 对一现役ZJ15钻机底座在两种钻井速度下的振动情况进行了测试和分析。
- Users wanted improved drilling rates and durability but also demanded significantly better usability. 使用者除了也要求的重要比较好的可用性之外想要改良的演练率和耐久性。
- Drilling rate equation in two variables 二元钻速方程
- Prediction to drilling rate based on seismic data 基于地震资料的钻速预测研究
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- A Manual Nerve Network for Prodiction of Deep Drilling Rate 一种预测深井钻井速度的人工神经网络法
- STRATEGY OF IMPROVING DRILLING RATE IN DEEP WELL HARD FORMATION 提高深井硬地层钻井速度技术难点及对策
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- Keywords Deep drilling Hole deviation Drilling rate DHD machine; 深孔凿岩;钻孔偏斜;凿岩速度;潜孔钻机;
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
