Method for treating formations to plug flow
US5492176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Dec 1, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5083
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for plugging a zone of a subterranean formation to block flow therethrough. A specific plugging solution comprised of an allyl monomer and an initiator is injected into the zone where it is allowed to set at an elevated temperature to harden and form a flow-blocking solid. The allyl monomer is an allyl ester selected from the group of diallyl orthophthalate, diallyl isophthalate, diallyl terephthalate, diallyl benzenephosphonate, diethylene glycol bis(allyl carbonate) and other known allyl monomers and the initiator is preferably a peroxy compound (e.g. benzoyl peroxide, diisopropyl peroxydicarbonate, etc.) or an azo compound (e.g. 4,4'-azobis(4-cyanovaleric acid). A diluent such as an alcohol (e.g. isopropyl alcohol or isobutyl alcohol) or a mutual solvent (e.g. ethylene glycol monobutyl ether, diacetin, triacetin, acetone, etc.) and a coupling agent (e.g. an organofunctional silane) may be added if needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.