Method and apparatus for consolidating a wellbore
US7789148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2006 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | May 21, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and tools to consolidate a wellbore by displacing conventional cement slurry or any other settable fluid, without any permanent casing are useful. A bladder is inflated inside the bore to act as a mold and to form an annulus that can be filled by cement slurry or any other settable fluid. When the cement or the resin is set, the form is retrieved by straight pull; leaving a cement or resin sheath to support the formation without requiring any re-drilling. The sheath can be perforated if necessary (in the producing zone). Applications include without limitations temporary cementation of mono-diameter wells, through-tubing repair of an open hole, or cementation of a slotted liner in water, oil or gas wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.