Self diverting matrix acid
US7299870B2 · kind B2 · utility
12Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | May 1, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/934
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method is described for treating a subterranean formation with a low viscosity fluid system that contains a surfactant or mixture of surfactants that does not divert fluid flow in the formation, but that develops the ability to divert flow as the fluid flows through the formation. The fluid optionally contains a formation-dissolving agent. The fluid is used in matrix acidizing, acid fracturing, and diversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.