Long stroke deep well pumping unit
This patent describes improvement in a long stroke pumping unit for deep wells, of the type having a tower disposed adjacent to, and immediately above a well; and having a polish rod extending from the tower into the well, and the tower having a base from which spaced, vertically disposed frame members extend, the frame members being tied together in rigid connection by space cross members. The improvement comprises: means defining a vertically disposed, reciprocating fluid motor, the motor being mounted at one end thereof to the base of the tower, and the opposite end thereof to the top of the tower, means defining counterweight apparatus disposed within the frame, and affixed directly to the fluid motor for reciprocation therein, drum means mounted to the top of the tower, for rotation about a horizontal axis, belt means the belt means being disposed about the drum and interconnecting the counterbalance apparatus and the polish rod, pump means for developing and sequentially delivering fluid to opposite ends of the motor.
- Assignee:
- NOV; NOV-91-024080; EDB-91-158468
- Patent Number(s):
- US 5018350; A
- Application Number:
- PPN: US 7-521332
- OSTI ID:
- 5116320
- Country of Publication:
- United States
- Language:
- English
Similar Records
Universal long stroke pump system
Well pump control system