Methods of reducing the permeabilities of horizontal well bore sections
US7159656B2 · kind B2 · utility
76Cited by
92References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Sep 14, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/508
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of temporarily reducing the permeability of one or more selected sections of a subterranean formation penetrated by a horizontal well bore and the flow of water or water and hydrocarbons or hydrocarbons therefrom are provided. The methods comprise the steps of preparing or providing an aqueous treating fluid comprising water and a water-soluble formation permeability reducing agent, introducing the aqueous treating fluid into one or more selected sections and when required, contacting the one or more selected sections with an aqueous treating fluid comprising water and a formation permeability restoring chemical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.