Since 1967

Unico, Inc.
3725 Nicholson Rd.
P. O. Box 0505
Franksville, WI
53126-0505
262.886.5678
262.504.7396 fax
oilgas@unicous.com
unicous.com



Copyright © 2009
Unico, Inc.
All rights reserved.

All trade designations
are provided without
reference to the rights
of their respective
owners.

Stroke Rate Calculator
Maximum Stroking Rate vs. Stroke Length Comparison for SRP and LRP® Systems

Inputs
Well Name
Pumping Unit Stroke Length (in)
Maximum Rod Fall Velocity (fpm)
Acceleration/Deceleration Time (s)

Results
Conventional Fall Velocity (in/s)
740.3
Maximum Stroking Rates (spm)
Conventional Unit
11.8
Air-Balanced Unit
10.0
Phased-Crank Unit
9.4
LRP® Unit at Conventional Limit
12.7
LRP® Unit at Maximum Limit
12.7

Calculate