Fluid holdup tool and flow meter for deviated wells
US5631413A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Mar 7, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/113
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A production logging tool is provided for use within a well to directly measure a velocity profile of a multiphase fluid flow within a cross-section of a well. The production logging tool includes a tool housing from which a plurality of arms are radially extensible. The plurality of arms are rotatably mounted to the tool housing for rotating around a tool axis extending longitudinally through the tool housing. At least one Doppler flow sensor is fixedly mounted to one of the plurality of arms for moving with the arm to dispose the Doppler flow sensor within different localized regions within a cross-section of the well. The localized regions of the cross-section are located at different radial distances from and at different angular displacements around the tool axis of the tool housing, at points distal from the tool axis. The Doppler flow sensor has a depth of investigation for detecting flow velocities of a multiphase fluid flow proximate to the Doppler flow sensor, within the localized regions of the cross-section of the well. The plurality of arms are rotated about the tool housing to dispose the Doppler flow sensor within different ones of the localized regions disposed thro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.