CA2485824A1 - Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties - Google Patents
Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties Download PDFInfo
- Publication number
- CA2485824A1 CA2485824A1 CA002485824A CA2485824A CA2485824A1 CA 2485824 A1 CA2485824 A1 CA 2485824A1 CA 002485824 A CA002485824 A CA 002485824A CA 2485824 A CA2485824 A CA 2485824A CA 2485824 A1 CA2485824 A1 CA 2485824A1
- Authority
- CA
- Canada
- Prior art keywords
- reverberation
- borehole fluid
- signal
- self
- acoustic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention finds the acoustic impedance of the drilling fluid using reflections from a precise metal disk, and therefrom the density of the drilling fluid. Because the reverberation characteristics of an acoustic wave depend in part on the acoustic wave shape, the first reflection from the metal disk may be used to calibrate the measurement. A method for determining a borehole fluid property is disclosed that includes (i) generating an acoustic signal within a borehole fluid, (ii) receiving reflections of the acoustic signal from the fluid, and (iii) analyzing a reverberation portion of the acoustic signal to determine the property. The analyzing of the reverberation portion may include obtaining a theoretical reverberation signal and relating the measured reverberation signal with the theoretical reverberation signal to determine the borehole fluid property.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/927,067 | 2001-08-09 | ||
| US09/927,067 US6712138B2 (en) | 2001-08-09 | 2001-08-09 | Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
| CA002397171A CA2397171C (en) | 2001-08-09 | 2002-08-08 | Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002397171A Division CA2397171C (en) | 2001-08-09 | 2002-08-08 | Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2485824A1 true CA2485824A1 (en) | 2003-02-09 |
| CA2485824C CA2485824C (en) | 2007-01-09 |
Family
ID=34081397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002485824A Expired - Fee Related CA2485824C (en) | 2001-08-09 | 2002-08-08 | Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2485824C (en) |
-
2002
- 2002-08-08 CA CA002485824A patent/CA2485824C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2485824C (en) | 2007-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160808 |