Method for cleaning wellbore surfaces using coiled tubing with a surfactant composition
US6112814A · kind A · utility
64Cited by
26References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/929
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for cleaning a wellbore plugged with deposits of heavy hydrocarbons and finely-divided inorganic solids by circulating a surfactant composition containing an alkyl polyglycoside, an ethoxylated alcohol, a caustic and an alkyl alcohol through the wellbore with a coiled tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.