Composition and method for temporarily reducing permeability of subterranean formations
US4715967A · kind A · utility
162Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a composition and method of temporarily reducing the permeability of subterranean formations penetrated by a wellbore. In particular, it relates to an inexpensive, low molecular weight condensation product of hydroxy acetic acid with itself or compounds containing other hydroxy-, carboxylic-acid-, or hydroxycarboxylic-acid moieties and method for preventing fluid loss during well treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.