Tower drive pumping unit
US10094368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 20, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/126
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A numerical controlled drive tower pumping unit includes a main tower frame, a power system, a drive system, a control system, a wire rope wheel, a balance weight box, and a suction rod. The power system, drive system, and control system work to alternately raise and lower the suction rod. The pumping unit includes a safety braking system configured to permit free rotation of the drive system in a normal operating state and prevent rotation of the drive system in an abnormal operation state. The pumping unit includes a tower moving mechanism configured to roll the main tower frame along a foundation frame from a normal operation position with the main tower frame proximate to a wellhead borehole to a workover position with the main tower frame distant from the wellhead borehole. The moving mechanism includes retractable roller assemblies to facilitate movement of the main tower frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.