Sucker Rod FEA Simulator

Stress, fatigue & buckling per API 11B / RP 11L

API 11B API RP 11L API RP 11BR

Rod Geometry

Rod Length 5000 ft

Rod Diameter

FEA Elements 20

Material Grade

UTS: 90,000 psi | Endurance: 27,000 psi

Loading

Max Polished Rod Load (MPRL) 15,000 lbs

Min Polished Rod Load (mPRL) 3,000 lbs

Applied Torque 1,500 in-lbs

Lateral Load (distributed) 0 lbs/ft

Pumping Parameters

Strokes / Minute (SPM) 10

Design Life 5 yrs

Wellbore

Tubing ID

Fluid Density 8.33 ppg

Service Condition

Guide Constraints (% of depth)

Click to toggle guide constraints. Bottom is always fixed. Top = free lateral.

Max Von Mises

—

psi

at node —

Safety Factor

—

SF (tensile)

Min API: 2.0

Max Axial Stress

—

psi

At polished rod

Max Bending Stress

—

psi

outer fiber

Torsional Shear

—

psi

Uniform

Fatigue Life

—

years

Modified Goodman

Miner's Damage

—

D (fail at 1.0)

over design life

Helical Buckling

—

F_helix = —

Connection Stress

—

psi

Pin threads (Kt)

Stress Distribution & Deformed Shape

Modified Goodman Diagram

API 11B Compliance Checks

Failure Mode	Actual	Allowable	Margin	Status
Running analysis…

Engineering Disclaimer: This tool is intended for preliminary design and educational purposes only. Results are based on simplified FEA beam theory and API 11B/RP 11L formulations. Not suitable for final certified design, which requires a licensed Professional Engineer and commercial software validation (RODSTAR™, Prophet™, WellFlo™). All API safety factors must be verified against the current edition of API Specification 11B and API RP 11L. Tepuy Solutions accepts no liability for engineering decisions based on this simulator.