Mechanisms for transferring hydraulic control from a primary safety valve to a secondary safety valve
US10513908B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Wellbore systems containing a hydraulically regulated primary safety valve may have their hydraulic regulation transferred to an insert safety valve disposed in a nipple. Such wellbore systems may comprise: a tubing string comprising a nipple and a primary safety valve, the primary safety valve being disposed in the tubing string below the nipple; and a control line and a balance line in hydraulic communication with the primary safety valve and in latent hydraulic communication with one or more switching mechanisms in the nipple. The one or more switching mechanisms in the nipple are actuatable to shut off hydraulic communication of the control line and the balance line below the nipple and to redirect, via one or more latent hydraulic lines, the hydraulic communication of the control line and the balance line to an insert safety valve positioned in a bore of the nipple.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.