Method of preheating a heavy oil zone through existing bottom water and then diverting steam into the oil zone
US5016713A · kind A · utility
8Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1990 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Mar 14, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for recovering viscous oil from a formation having a bottom water zone below an oil containing zone. Steam is directed into the bottom water zone thereby heating this zone and an oil containing zone thereabove. Afterwards, steam injection is ceased and a gellable composition is directed into the bottom water zone where it forms a solid gel. Once the solid gel has formed, steam is injected into the bottom water zone where the solid gel causes it to flow upwardly into the oil containing zone. Oil, water, and steam are removed via a recompleted producer well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.