In-situ zonal isolation and treatment of wells
US9605520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Dec 12, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process for isolating one or more segments of a gravel packed well from other segments to treat the isolated segments and easily re-establish flow from the other segments after the treatment is described. The treatment includes techniques for enhancing or permanently blocking production from the isolated segment. The process includes the installation of a removable sealing element and a permeability poison that forms a fluid seal to prevent longitudinal fluid flow along the annular production space outside the tubular production pipe. With wireline or other low-cost wellbore workover systems, access is re-engaged with the secluded formation including removal of plugs and fluid seals within the tubular production pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.