Optimize useful slickline life by preventing failures and costly line replacement

Fatigue Life Tracking

• Result shows fatigue along the length of the slickline

• Data acquisition system required to capture job depth and tension data

• Sheave diameters and configurations required

• Filtered data from all jobs stored in database for each slickline

• Tracks cutting and re-spooling of the slickline

Job Data from Data Acquisition System

% Life Used versus Length

Model Development

• Plastic bending fatigue model

• Varies fatigue life with tension

• Different model parameters for each slickline

• Model calculates % of Life Used

Validation: Fatigue Testing

• Two fatigue test machines developed

• Testing with and without tension

• Fully reversed bend cycles counted

• Samples cycled to failure

• Each type of slickline must be tested

(Left) Portable test machine results: Fatigue % life used
(Right) Large test machine

For additional information, the following are available for download:

Literature

Cerberus for Slickline Fatigue

Technical Papers, Articles & White Papers

Slickline Fatigue Modeling and Tracking Ken Newman, NOv CTES, SPE/ICoTA European Roundtable 2005

Software

Cerberus for Slickline Fatigue (fully functional demo software)