Adjustable lock-out ram for production BOP applications
US10544642B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2016 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Oct 7, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/126
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods for gripping a polished rod that extends into a hydrocarbon production well include a clamping assembly that is moveable between an unengaged position where the clamping assembly is spaced apart from the polished rod, and an engaged position where the clamping assembly engages the polished rod. The clamping assembly includes a recess located in a moveable clamping member, the recess having a supporting surface. The clamping assembly also includes an adapter sized to fit within the recess and to be supported on the supporting surface, the adapter having a gripping surface facing out of the recess. The adapter is positioned to grip the polished rod with the gripping surface when the clamping assembly is in the engaged position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.