Method and apparatus for acoustic fluid analysis
US6401538B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided for analyzing suspended particulate and liquid medium in a fluid stream by transmitting acoustic signals into the fluid, detecting scattered acoustic energy, and determining a parameter related to the density and compressibility of the fluid. In one embodiment, the fluid analysis tool comprises two transmitting transducers intermittently emitting acoustic signals, and two receiving transducers being differently azimuthally positioned with respect to the transmitters. The ratio of the amplitude of scattered signals measured by the two receivers as a result of emission from the first and second transmitters are used to calculate the parameter. In another embodiment, a tool comprising one transmitter and at least three receivers with azimuthal angles in both forward and backward scattering regions with respect to the incident wave is disclosed. The scattering signal amplitudes normalized by the amplitude from one of the receivers is used to identify and monitor the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.