Split body swelling packer
US7730940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2008 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jun 29, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A swelling packer system uses modules that can be joined together and mounted over a tubular using a vertical split that can be drawn closed with a tapered pin in overlapping loops. The pins are circumferentially spaced apart as between adjacent modules. End rings can protect the modules for run in and act as extrusion barriers during and after the swelling is complete. The module ends can be overlapped in an interlocking fashion which allows multiple elements to be joined together to make a packer assembly as long as desired with any combination of swelling elements in a single packer assembly. Optionally, interior grooves in the swelling material can hold split ring seals or o-ring type seals that are slipped over a tubular end before a module is clamped on. The sealing elements can be triggered with water or hydrocarbons or with other materials already in the wellbore or introduced to it or other surface or locally actuated triggers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.