Polysilalkylenesilane polymer useful in enhanced oil recovery using carbon dioxide flooding
US5080169A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer is disclosed that is useful in increasing the viscosity of carbon dioxide. That polymer comprises a polysilalkylenesilane polymer, preferably polydimethylsilmethylenedimethylsilane. That polymer can be used in a method for recovering oil from an underground oil-bearing earth formation penetrated by an injection well and a producing well, in which method carbon dioxide is injected into the formation to displace oil towards the producing well from which oil is produced to the surface. The viscosity of the carbon dioxide injected into the formation is increased at least three-fold by the presence of a sufficient amount of a polysilalkylenesilane polymer and a sufficient amount of a cosolvent to form a solution of the polymer in the carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.