Multilayered ball sealer and method of use thereof
US8714250B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2008 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Oct 17, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable layer and adapts to its shape. A multilayered ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and applying pressure to deform the shape of the intermediate layer such that the multilayered ball sealer adapts to the shape of a perforation opening on which the multilayered ball sealer has seated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.