Monitoring of multilayer reservoirs
US9664035B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2013 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and system is described for estimating flow rates of fluids from each of separate influx zones in a multilayered reservoir to a production flow (Q) in a well (Wr) in the reservoir, the well having at least two separate influx zones from the multilayer reservoir of known positions along the well, the well being provided with distinct tracer sources with distinct tracer materials of known positions in each of the at least two separate influx zones. Each influx zone is provided with a delay path for a tracer leakout stream flow from that influx zone. The method includes providing a global production flow change for the production flow in the well, establishing tracer concentrations in the production flow of the distinct tracer materials as a function of time, and estimating the production rates from each of the separate influx zones in the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.