抽油机

• Optimum design of conventional pumping unist
  常规抽油机优化设计
• Designing on new power saving pumping unit
  新型节能抽油机的设计
• The conventional pumping unit improvement and energy - saving analysis
  常规抽油机节能改造及效果分析
• The oil extractors form a unique picture of a booming oilfield
  田间的抽油机构成了独特的油田景观。
• A kind of long - strike oil pumping machine using planet - gear
  一种行星齿轮长冲程抽油机的换向机构研究
• Pumpingunit with three horse heads
  三驴头节能抽油机的研制
• Design and simulation analysis of reconfigurable beam pumping unit
  可重构游梁式抽油机的设计和仿真分析
• Structure optimum design of double wheel and direct balance pumping - units
  双天轮直平式抽油机结构优化设计
• Energy saving mechanism in the application of gas anchors to rod pumping wells
  抽油机井应用气锚的节能效果
• Solution to the problems in field use of dual horsehead pumping unit
  双驴头抽油机现场使用中存在问题的改进