Method for estimating either flowback or the reservoir fluid production rate from either one individual inlet or the contribution from several inlets separated by intervals in a wellbore located in an oil and/or gas reservoir
US11629590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/56
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method is described for estimating either flowback or the reservoir fluids production rate from either one individual inlet or the contribution from several inlets separated by intervals in a wellbore located in an oil and/or gas reservoir. The wellbore may include a casing with a plurality of magnetic irregularity elements, such as casing collars, to generate magnetic perturbations within the casing. In the method, one or more sensor elements are delivered in such a way that the flow drags them while the sensor elements record in time the magnetic perturbations generated by the magnetic irregularity elements. The known location of the magnetic irregularity elements and the reading of perturbations enables estimating the velocity of the sensor element(s) along the path direction of the casing, to determine the velocity of the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.