Method of measuring multi-phase fluid flow downhole
US8620611B2 · kind B2 · utility
8Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/024
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Multi-phase flow is estimated in a flow meter by measuring fluid pressure within the flow meter and using the measured pressure to calculate a density of the flow. A total flow rate through the flow meter is estimated based on the calculated density and a PVT analysis of the fluid. A corrected total mass flow rate is calculated using a liquid/gas slip correction technique. Fluid flow rates are further corrected with a discharge coefficient that varies with changes in the Reynolds number of the fluid. The gas and oil fractions can be determined from the corrected total mass flow rate and gas fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.