Monitoring well performance
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Monitoring SUEZ Production Well Performance 2016 AWWA PNWS Conference Roger Dittus P.G. May 6, 2016
Transcript of Monitoring well performance
Monitoring SUEZ Production Well Performance
2016 AWWA PNWS Conference
Roger Dittus P.G.
May 6, 2016
Well efficiency decline is obviously a bad thing…
Increased pump lift
Pump design becomes “wrong”
wasted energy
lowered ability to meet demand
may become “permanent”
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Monitoring well performance
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Fine-grained Sediments
with sand lenses
? ?
C. Petrich
Interbedded sand, silt, clay
Mudstone
Conceptual Cross-Section (Regional Scale)
Shallow coarse-grained sediments and basalt
Volcanic
Rocks
4,000
2,000
2,000
4,000
0
Ele
va
tio
n (
fee
t)
W EMunicipal Domestic Municipal
Adapted from a cross section by S. Wood BSU Geosciences
Arsenic
Uranium
Concentration
> Primary MCL
= “not useful”
Decommission
Treat Fe/Mn
Re-drill
Decommission
Treat Fe/Mn
Re-drill
ASR
SUEZ “Well Op” tool helps us evaluate well performance
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• SUEZ utility in New York modeled Well Op tool on original version of
“Well Watch” software developed under SUEZ R + i Alliance
• Well Op tool creates easily scalable graphs of SCADA system data
• Allows comparison of current/ recent well performance to previous
performance
Monitoring SUEZ Production Well Performance
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Well Op tool
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Well Op tool
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Well Op tool
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Reviewing well operation
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80 feet
300 gpm
Airline problem
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Reviewing well operation
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550 gpm
80 feet50 feet
300 gpm
Monitoring SUEZ Production Well Performance
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Pump & screens cleaned
Tracking well performance decline
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SUEZ Clinton well
Monitoring SUEZ Production Well Performance
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Tracking well performance decline
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1,000 gpm 600 gpm
Pump
throttled
Monitoring SUEZ Production Well Performance
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Tracking well performance decline
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~30% decline
Monitoring SUEZ Production Well Performance
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Evaluating effectiveness of maintenance
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screens
chemically
cleaned
Monitoring SUEZ Production Well Performance
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Evaluating effectiveness of maintenance
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Identification of impacts from pumping wells
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SUEZ Goddard well
Monitoring SUEZ Production Well Performance
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Identification of well interference effects
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Reduction in specific capacity due to influence of another pumping well
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Well interference
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Another example
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SUEZ River Run well
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Another example
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Another example
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Another example
• Well Op tool allows for an easy comparison of current to historic well
performance
• Can be more confident of need to perform well, pump, and
monitoring equipment maintenance
• Currently working to translate observations from Well Op Tool into
work orders in GIS-based asset management system
• In a nut shell: Current tool use = we look for a problem to fix
Summary
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Always room for improvement
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More advanced tool will be available soon
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More advanced tool will be available soon
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Thank you
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