· Rod pump can be pulled out from the well directly
· Well inspection and workover is convenient
· Reduce the cost of pumping test
· Suitable for deeper well
RELATED STORIES
· Adopt long plunger and short barrel structure · Use the sand scraping and sealing...
· Indeed, combined by two different diameter pumps · Uses the hydraulic feedback theory, reduce...
· Unique outside work barrel and plunger rotator · Valve ball has a compulsive restoration...
· The pump reaches the advanced level in the world · Has good anti-corrosion performance...