Method of increasing retention of scale inhibitors in subterranean formations
US5089150A · kind A · utility
17Cited by
25References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/927
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel method of injecting or squeezing a cross-linked scale inhibitor down a well into a subterranean formation which significantly lengthens its effective life is accomplished by cross-linking a carboxylic acid-containing polymeric or organophosphorus-containing inhibitor with a polyalcohol. The significant extension of life afforded by cross-linking with a polyalcohol improves the overall economics of oil production in fields prone to mineral scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.