Wellhead hanger with spacer to reduce break-out torque
US9598924B2 · kind B2 · utility
2Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellhead hanger assembly is provided. In one embodiment, a system includes a wellhead hanger, such as a casing hanger. This system also includes a spacer ring positioned along a neck of the wellhead hanger between a threaded portion of the neck and a shoulder of the wellhead hanger. In at least some instances, the spacer ring may cooperate with a running tool threaded onto the wellhead hanger to reduce the break-out torque needed for disconnecting the running tool from the wellhead hanger. Additional systems, devices, and methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.