Method of wellbore operations
US11125058B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2019 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Sep 13, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of estimating a real time production flowrate from a well by estimating a real time flowrate of a marker fluid in the well, and comparing the estimated flowrate with a baseline marker fluid flowrate; where the baseline marker fluid flowrate correlates to baseline production fluid flowrate. The baseline marker fluid flowrate is obtained by introducing an amount of a marker fluid in the well, monitoring the time over which the marker fluid travels a set distance, and estimating a flowrate of the marker fluid based on the monitored time and amount of marker fluid. The real time production flowrate is obtained by extrapolating the baseline production fluid flowrate by an amount derived from a comparison of the baseline and real time marker fluid flow rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.