Systems and methods for independent control and operations of tubing and annulus at the wellhead
US12163396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2022 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/072
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubing spool of a wellhead assembly can include a body having a body cavity, a first channel, and a second channel disposed therein, where the body cavity is configured to receive a tubing hanger used to couple to and suspend a tubing string, where the first channel is configured to be in communication with a tubing string cavity within the tubing string, where the second channel is configured to be in communication with an annulus located between the tubing string and a production casing, and where the first channel and the second channel are each configured to facilitate flow of at least one of a plurality of fluids in either direction independently of each other. The tubing spool can also include a first back pressure valve disposed within the first channel and a second back pressure valve disposed within the second channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.