Tubing insert isolation valve for use with legacy wells, and methods of use thereof
US12371968B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2023 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jul 5, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubing isolation valve configured to permit lowering thereof downhole and installation in an existing pump seating nipple at a distal end of a production string. An elongate mandrel having at least 2 ports is slidably positioned in a hollow seal sub. A portion of the resulting assembly is positionable via a landing tool within the pump seating nipple. The mandrel is slidably moveable within the seal sub and pump seating nipple, from a first open position where fluids can be pumped from the wellbore via a pump fluidly connected to the landing tool, to a second closed position where fluids are isolated from the production tubing. Configurations of and methods of installing and operating the isolation valve when for example removing a pump from the well, and for removing the isolation valve completely from pump seating nipple and wellbore if desired, are further disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.