System and method for perforated well sand control
US7617872B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2008 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | May 9, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one embodiment, a system includes a cased wellbore disposed in a formation of interest. The system includes an emulsion positioned in the wellbore at a depth of the formation of interest. The emulsion includes an oil external phase and an aqueous internal phase. The oil external phase includes particles having calcium hydroxide. The aqueous internal phase includes insoluble silica particles. The system further includes a perforating tool that generates perforation tunnels through the cased wellbore into the formation of interest. The system further includes a well flow control device that shuts in the wellbore for a specified period of time. The emulsion breaks during contact with the formation in the perforation tunnels, and the calcium hydroxide and silica particles form a cementitious material that consolidates the perforation tunnels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.