Use of polyalkoxy sulfonate surfactants for inhibition of scale formation
US4590996A · kind A · utility
7Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1984 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Dec 13, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The accumulation of inorganic mineral scale such as barium sulfate in oil field formations and/or production equipment is inhibited by adding to formation fluid or produced fluid a scale formation inhibitory amount of a polyalkoxy sulfonate of the general formula EQU (RO[R'O].sub.x (CH.sub.2).sub.y SO.sub.3).sub.z M wherein R is a hydrophobe, R'O is a C.sub.2 H.sub.4 O or a C.sub.3 H.sub.6 O group or some combination thereof, M is a monovalent or divalet cation, x is 2 to 10, y is 0 to about 4 and z is 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.