Pipe ram annular adjustable restriction for managed pressure drilling with changeable rams
US10844676B2 · kind B2 · utility
0Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Dec 13, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus includes a housing and at least two pipe ram systems engageable with the housing. Each of the at least two pipe ram systems comprises an actuator, a bonnet and a sealing pipe ram element. The at least two pipe ram systems are disposed on opposed sides of the housing. A carousel is disposed proximate at least one of the at least two pipe ram systems. The carousel has mounted thereon a plurality of pipe ram systems. The carousel is rotatable to orient a selected one of the plurality of pipe ram systems toward a receiving bore in the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.