Method and apparatus for measuring oil effluent flow rates
US6405604B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2823
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a flow rate measurement method adapted to oil effluents made up of multiphase fluid mixtures comprising water, oil, and gas. The effluent is passed through a Venturi in which the effluent is subjected to a pressure drop (&Dgr;p), a mean value (<&Dgr;p>) of the pressure drop is determined over a period t1 corresponding to a frequency f1 that is low relative to the frequency at which gas and liquid alternate in a slug flow regime, a mean value (<&rgr;m>) is determined for the density of the fluid mixture at the constriction of the Venturi over said period t1, and a total mass flow rate value <Q> is deduced for the period t1 under consideration from the mean values of pressure drop and of density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.