Disposal of produced formation fines during oil recovery
US4787452A · kind A · utility
301Cited by
17References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Recovered formation fines are pumped in slurry form into an injection well during an enhanced oil recovery process e.g. a steam flood. Said injection can be done incrementally in stages in conjunction with said process. Said fines improve the sweep efficiency of the injected medium. This method is also beneficial where steam breakthrough has occurred since the breakthrough path is in a fluid or semi-solid state thereby allowing the fines slurry to be injected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.