钻掏泥砂泵
combination bit and mud socket
层状砂井路基
layered subgrade with sand drains
长轴深井泵
long shaft deep well pump
抽油井泵功图
Indicator Card of Pumping Wells
出砂井完井
sand problem well completion
袋装砂井堆载预压
sand wick loading prestress
Sand wich heaped load preloading
抵销井内的压力
offset the pressure in a well
地面驱动螺杆泵井
surface drive screw pump well
电动货油深井泵
electric-driven deep-well cargo pump
电潜泵井
electrical submersible pump system