Method to determine tracer response from non-ideal chemical tracers
US11384636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2019 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jul 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for normalizing a chemical tracer response in a zone can include measuring a concentration of the tracer as produced from a proximal zone, measuring a concentration of a reference tracer as produced from the proximal zone, and applying a mathematical correction to a concentration of the tracer as produced from the zone. Another method can include normalizing a chemical tracer concentration to a reference tracer concentration, and then allocating flow to a zone corresponding to the tracer based on the normalized tracer concentration. Another method can include injecting a first chemical tracer into a first wellbore reference zone and into additional producing zones of the first wellbore, injecting a second chemical tracer into a second wellbore reference zone and into additional producing zones of the second wellbore, and injecting a third chemical tracer into each of the additional producing zones of the first and second wellbores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.