Oil well pump driving unit
Patent
·
OSTI ID:7039467
An oil well pump driving unit with a horizontally disposed hydraulic cylinder having a cylinder rod coupled to a drive rope extending into a pumping tee-stuffing box arrangement for driving the sucker rod string leading to a conventional oil well reciprocating pump. The drive rope extends over a first rotating sheave mounted near the wellhead and passes over a second rotating sheave mounted on a carriage which traverses a carriage channel in a draw works on which the hydraulic cylinder is mounted. A hydraulic drive/control system utilizing limit switches on the draw works provides control over the stroke position, the stroke length, and the stroke rate.
- Assignee:
- EDB-84-115020
- Patent Number(s):
- US 4432706
- OSTI ID:
- 7039467
- Country of Publication:
- United States
- Language:
- English
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