Pumping System Efficiency

1
Pumping System Efficiency
2
Pumping System Efficiency
3
Power Measurement
4
Master Meter for Several Wells vs. Single Well
Power Metering
Lower energy cost occurs with a master meter for
several wells, but the operator usually is
responsible for the poles and power lines past
the master meter. Installation of single point
individual meters are cheaper if the power
company pays the cost. BUT, generally the
operator and in de-regulation the operator pays
installation cost, so a master meter is
preferred. Could be 5 lower operating costs ()
if a master meter is used vs. single well meters?
5
Master meters for a group of well give the
company credit for regeneration of the motors
when they act as generators. Single well meters
with a rachet do not. However single well meters
allow some measure of diagnostics for the well
including the calculation of power efficiency
6
(No Transcript)
7
(No Transcript)
8
What are typical Beam Losses?
50-60 Good 40-50 Average 30-40 Poor -20 Bad
9
Efficiency Less Than 35
10
Efficiency Greater Than 35
11
(No Transcript)
12
DO TO MINIMIZE ENERGY COST?

• Correctly match pumping requirements with
  wellbore inflow.
• Mechanically/Electrically balance pumping unit.
• On severely over sized motors where average
  efficiency falls below 65-70 change out motor.
• Add power factor correction capacitors to pumping
  unit motors.
• Properly size pumping unit to match well loads.
• Verify power meter calibration.

13
Efficiency Factors

• Transformers S
• POC/Gas Interference L
• Motors S
• Belts and Sheaves S
• Units 50 Load S
• Unit rotation S
• Stroke Length S-M
• Unit Balance S-M
• Rod String Size S-M
• Pump Size L
• Pump Slippage S
• Pump VE ( Gas Interference) L
• Setting Depth S
• Tubing S
• Runtime S