System and method for installing or removing a seal sub from a riser
US10669791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Jul 10, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool configured to facilitate installation or removal of a seal sub from an annular structure includes a support structure configured to be coupled to the annular structure, a shaft extending axially from the support structure, and an engaging structure coupled to the shaft. The engaging structure includes a plurality of engaging members, and each of the plurality of engaging members is configured to move in a radial direction between a retracted position that enables the engaging structure to be inserted into the seal sub and an extended position that enables the respective engaging member of the plurality of engaging members to engage the seal sub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.