气举井下装置
Specification for gas lift down hole equipment
1999-08-09
GB/T 21411.2-2009
石油天然气工业井下设备 人工举升用螺杆泵系统 第2部分：地面驱动装置
Downhole equipment for petroleum and natural gas industries - Progressing cavity pump systems for artificial lift - Part 2: Surface-drive systems