Downhole mixer
US5582251A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Apr 17, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B27/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention discloses an apparatus for storing one or more constituents in a downhole tool. The constituents are segregated from each other until such time as the tool is actuated. At that time, the constituents are forced from their storage position and mixed as they are pushed from their storage position. The resultant mix is then directed to the location where the mixture will finally be placed for eventual solidification. The apparatus and method are useful for inflation of bridge plugs or external casing packers, as well as other downhole applications. Significant time is provided for the surface operator prior to initiation of the constituent elements by segregating the ingredients until shortly before they are mixed and directed to their final destination. Should a problem arise prior to mixing, the unmixed ingredients can be withdrawn from the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.