Downhole tool and method for tracer injection
US6125934A · kind A · utility
42Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An injection apparatus and use thereof that comprises a plurality of spaced ejection ports from which the tracer composition can be ejected so as to be injected directly into a chosen layer of a stratified flow, and that in use can be adjusted such that the ports lie each within the appropriate layer. Each port is connectable to a source of tracer composition and most conveniently the source is the combination of a reservoir and a syringe-like device which can draw a suitable amount of the composition from the reservoir and then drive it to, and eject it from, the associated port into the chosen layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.