oil well

• Integral valve design and application for oil well pumps
  抽油泵一体式凡尔罩设计与应用
• G class high sulphate - resistant oil well cement development
  级高抗油井水泥的研制与分析
• A new low temperature high early strength cement for oil well
  一种新型油井水泥低温早强剂
• Well cementing in shallow heavy oil wells in henan oilfield
  河南油田稠油浅井固井技术研究
• Design based on dsp for mid - frequency power source in oil well
  的采油加热中频电源系统设计
• An intelligent monitoring system for oil well
  油田井站智能监控系统
• An oil well blew out in the north sea
  北海的一口油井发生了井喷。
• Evaluation method on oil well water plugging
  油井堵水效果评价方法
• An oil well blew out in the oil field
  油田里有一口油井发生井喷。
• The oil wells turned into a raging inferno
  油井化为熊熊的火海。