Pump Dynamometer Card Analyzer
Paste or enter surface dynamometer card data. Identifies pump problems: gas interference, fluid pound, pump-off, valve leaks, and more.
Dynacard Data
Position (in) and Load (lbs), one pair per line. Comma, tab, or space separated.
Surface Dynamometer Card
Diagnosis
Pattern Identified
--
Pump Fillage
--%
Stroke Efficiency
--%
Peak Load
-- lbs
Min Load
-- lbs
How diagnosis works
Full Pump: Parallelogram shape. Load increases sharply at start of upstroke (TV opens), stays high across upstroke, drops at start of downstroke (SV opens).
Gas Interference: Rounded top-left corner on upstroke due to gas compression before TV opens.
Fluid Pound: Sharp load drop near end of downstroke as plunger hits fluid level.
Pump-Off: Similar to fluid pound but load drops earlier in downstroke, card area significantly reduced.
TV Leak: Load decreases progressively during upstroke (losing fluid through traveling valve).
SV Leak: Load increases during downstroke (fluid leaking back through standing valve).
Fillage: Ratio of actual card area to ideal (full pump) card area.
Related Tool
Production Test Calculator
Calculate GOR, GLR, water cut from separator data.
Open Production Test →Struggling with rod pump failures or low pump efficiency? Our team uses AI-driven diagnostics to optimize beam pump operations.
Book a free strategy call →Understanding Dynamometer Cards in Rod Pump Operations
A surface dynamometer card plots polished rod load versus position over one complete pump stroke. The shape reveals critical information about downhole pump performance without pulling the well. An ideal full-pump card forms a parallelogram. Deviations indicate specific problems: gas interference rounds the upper-left corner, fluid pound produces a sharp load drop in late downstroke, and valve leaks create characteristic load slopes during the up or downstroke. All analysis runs in your browser. Built by Groundwork Analytics.