Circumferential displacement sucker rod tong
US10711542B2 · kind B2 · utility
0Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2016 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Apr 10, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/167
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sucker rod tong assembly for fastening together sucker rods to a rod coupling, where the assembly can include a two-stage mechanical drive mechanism. The first stage can connect an upper sucker rod to a lower sucker rod via a rod coupling. The first stage can be limited in mechanical ability to tighten the connection to a pre-set shoulder torque value. The second stage can then be hydraulically and mechanically sequenced, using a linear gear drive mechanism, to rotate a main tong pinion gear that can further rotate the sucker rod connection through a fixed circumferential displacement to a mechanical stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.