The document discusses using acoustic attenuation spectroscopy (AAS) to analyze drilling mud samples. AAS can detect gas bubbles and immiscible liquid hydrocarbons in water-based muds. It has been used to analyze muds of varying densities from 11.3 to 20.2 lb/gal. The technology offers early detection of gas kicks or fluid inflows during drilling operations. Sensors could be installed at multiple points along the drill pipe to monitor the mud stream. IBJ Technology has developed mud spectroscope solutions using AAS and has patents pending for related devices and methods.

1. Drilling Mud
Sound Spectroscope
Acoustic Attenuation Spectroscopy (AAS)
Solutions to the safety of deep water drilling
F.-M. Jäger
IBJ Technology
Colkwitzer Weg 7
04416 Markkleeberg
Germany
fmj@ibj-technology.com
www.ibj-technology.com
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2. Sound Spectroscopy for drilling mud
as a special application of the Acoustic Attenuation
Spectroscopy (AAS)
Previous state of the art :
„Acoustic Attenuation Spectroscopy (AAS) is commonly used to measure
particle size distributions (PSD) in the range 5 nm to 100 microns of
aqueous, as well as, non-aqueous colloidal samples such as Chemical
Mechanical Polishing (CMP) slurries, Ceramic Slips, Printing Inks, Minerals,
Catalysts, Metal Oxides, Pigments, Cosmetics, O/W and W/O emulsions,
and others.
Commonly measured attenuation levels are in the range of near zero to over
100 dB/cm in the frequency range 1-100 MHz. The percent solids level
(discrete-phase concentration) of measured samples is typically in the range
0.1 to 60% volume although Greenwood et. al. have used long-path
measurements on lower-concentration samples. „
Acoustic Attenuation Spectroscopy for Process Control of Dispersed Systems
J. Gabriel DosRamos, Matec Applied Sciences, 56 Hudson St., Northborough, MA 01532 USA
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IInnggeenniieeuurrbbüürroo JJääggeerr Mud Sound Spectroscope 2

3. Sound Spectroscope detected gas bubbles
Acoustic Attenuation Spectroscopy (AAS)
Long Sound path without reflection on the drill pipe
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IInnggeenniieeuurrbbüürroo JJääggeerr Mud Sound Spectroscope
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1 inch Gas
bubbles in water
based mud

4. Sound Spectroscope detectect fluid bubbles
Acoustic Attenuation Spectroscopy (AAS)
Long Sound path without reflection on the drill pipe
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IInnggeenniieeuurrbbüürroo JJääggeerr Mud Sound Spectroscope
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immiscible liquid
hydrocarbons in
water based mud

5. Acoustic Attenuation Spectroscopy in different
densities of mud
water based mud
11,3 lb/gal Bentonite
More information on the attenuation and speed of mud:
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process water
http://de.slideshare.net/fmj2/experimentalstudy-measurement-of-sonic-speed-of-drilling-muds-under-shear-stress

6. Acoustic Attenuation Spectroscopy in different
densities of mud
water based mud 15,6 lb/gal
Barite
More information on the measurement of mud:
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water based mud 20,2 lb/gal
Barite
http://de.slideshare.net/fmj2/experimentalstudy-measurement-of-sonic-speed-of-drilling-muds-under-shear-stress

7. Acoustic Attenuation Spectroscopy in different
densities of mud
0,5 inch Gas
bubbles in
More information on the measurement of mud:
http://de.slideshare.net/fmj2/experimentalstudy-measurement-of-sonic-speed-of-drilling-muds-under-shear-stress
IIBBJJ TTeecchhnnoollooggyy
IInnggeenniieeuurrbbüürroo JJääggeerr Mud Sound Spectroscope
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water based mud
20,2 lb/gal
Barite

8. Sound Spectroscope for all Solutions
Acoustic Attenuation Spectroscopy (AAS)
The Mud spectroscopes can be with all the
solutions for early gas kick detection and
combined with the inflow control devices.
All muds, regardless of whether oil based
or water based can be safely monitored
with the highest densities of up to about
20 lb / gal on inflow.
Evaluation of sound velocity is so high
resolution, even the smallest tributaries are
recognized by gaseous or liquid
hydrocarbons.
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9. Drilling Mud Spectroscope for the Deep Sea
Acoustic Attenuation Spectroscopy (AAS)
Same sensors for all applications
Sensor
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Sensor
Sensor
Sensor
Sensor

10. Drilling Mud Spectroscope for the Deep Sea
Acoustic Attenuation Spectroscopy (AAS)
IBJ technology offers its
solutions to all interested
parties to use.
Patents pending
Vorrichtung und Verfahren zur frühen
Erkennung von Zuflüssen in
Untergrundgasbohrungen
Deutschland DE102014003552
Angemeldet 12. März 2014
Vorrichtung und Verfahren zur frühen
Erkennung von Zuflüssen in
Untergrundbohrungen
Deutschland DE102014014668
Angemeldet 1. Oktober 2014
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