Tracers in predetermined concentration ratios
US4055399A · kind A · utility
30Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Nov 24, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for tracing the flow of a plurality of fluid slugs injected into a subsurface formation using a number of tracers smaller than the number of fluid slugs. Single tracers are used in a number of fluid slugs equal to the number of tracers. In the remaining injected fluid slugs, combinations of at least two of the tracers in predetermined concentration ratios are used. Recovered fluid is analyzed for the presence of each of the tracers and the ratios of the tracers indicates breakthrough of each injected slug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.