Removable fracturing plug of particulate material housed in a sheath set by expansion of a passage through the sheath
US9255461B2 · kind B2 · utility
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11References
21Claims
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Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | May 9, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The removable plug features a solid material that is housed in a porous container that has its shape changed to transition from the run in shape to the set shape. A swage is moved through a passage in the container to enlarge the passage and move the container to a borehole wall. The passage is then closed such as with a flapper valve or by moving in a mandrel into the expanded passage and lodging the mandrel in the expanded passage. Various release techniques are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.