Powerful ultrasonic sensors can measure flow velocities in the thickest mud. Inflow measurements are so inexpensive.

1. Inflow Control Devices
with ultrasound
F.-M. Jäger
IBJ Technology
Colkwitzer Weg 7
04416 Markkleeberg
Germany
fmj@ibj-technology.com
www.ibj-technology.com
IBJ TechnologyIBJ Technology
IngenieurbIngenieurbüüro Jro Jäägerger 1
(IBJ deep sea drilling mud flow meter)

2. Inflow measurement of marine riser
IBJ TechnologyIBJ Technology
IngenieurbIngenieurbüüro Jro Jäägerger 2
Sound path without reflection on the drill pipe
Ultrasonic Mud Flow Meter
Measurement of the transit time
with and against the flow of mud
Powerful Ultrasonic Sensors
Burst Booster
Resolution of Picoseconds

3. Inflow measurement of marine riser
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IngenieurbIngenieurbüüro Jro Jäägerger 3
2 or 4 floors with sound paths turned 90 °
Ultrasonic Mud Flow Meter
The signal range ( depth of
penetration ) at a density of
15.6 lb / gal is 10 times
greater than the sensor
spacing
http://de.slideshare.net/fmj2/experimentalstudy-measurement-of-sonic-speed-of-drilling-muds-under-shear-stress
http://de.slideshare.net/fmj2/early-kick-detection-and-nonlinear-behavior-of-drilling-mu
More information on the measurement of mud:

4. Inflow measurement riserless
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IngenieurbIngenieurbüüro Jro Jäägerger 4
Sound path in the mud line
Ultrasonic Mud Flow Meter
Same sensors for all applications

5. Inflow measurement for the deep sea
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IngenieurbIngenieurbüüro Jro Jäägerger 5
Same sensors for all applications
Ultrasonic Mud Flow Meter
Sensor
Sensor
Sensor
Sensor
Sensor

6. Inflow measurement – physical effects
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IngenieurbIngenieurbüüro Jro Jäägerger 6Ultrasonic Mud Flow Meter
Hydrocarbons and
Liquified gases
Sound speed is becames smaller
Gas bubbles Amplitude becomes smaller
Sound speed can change
something
Gas bubbles
Expansion
Flow speed is greater

7. Inflow Measurement Basics
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IngenieurbIngenieurbüüro Jro Jäägerger 7Ultrasonic Mud Flow Meter
v =(( T2 -T1 )/ T1* T2))*(L / 2cos α)
Verily in this are:
•V – mean flow velocity of drilling mud
•T1 – runtime of the ultrasonic signals with the flow direction
•T2 – runtime of the ultrasonic signals against the direction of flow
•L – length of the ultrasound path
•α – angle of the ultrasonic signal to the direction of the flow
velocity of drilling mud
α

8. Inflow Measurement Basics
IBJ TechnologyIBJ Technology
IngenieurbIngenieurbüüro Jro Jäägerger 8Ultrasonic Mud Flow Meter
c = L / sin(2 α)* ( T2 -T1 )/ T1* T2
Verily in this are:
•c – mean speed of the ultra sound of drilling mud
•T1 – runtime of the ultrasonic signals with the flow direction
•T2 – runtime of the ultrasonic signals against the direction of flow
•L – length of the ultrasound path
•α – angle of the ultrasonic signal to the direction of the flow
sonic speed
αL