New compositions for iron control in acid treatments for oil wells
US5547926A · kind A · utility
1Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1992 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Jul 9, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to iron control in an acid medium for forestalling the formation of precipitates known as "sludges" (asphaltic products) in contact with certain crude oils. Use is made of compounds comprising a mercaptan function non miscible in water and, in combination, a selection of catalysts. Application to acid treatments for oil, gas, water, geothermal and analogous wells, as well as to industrial cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.