Case Studies

Field Trial in South Texas February 2018

Well Abandonment with Wel-lok™ STC

Identification of problem

Provide a pressure seal through production casing, sealing against open-hole formation.

When casing is run and cemented in the well a competent seal is not always created between the cement and the open-hole formation. When abandoning a well, it is important to ensure all annuli are properly sealed.

The production casing was perforated and existing cement was washed out. A Wel-lok™ STC was set inside the casing and through the perforations to provide across the wellbore out to the open-hole formation.


The tool was successfully set and provided a seal against the open-hole formation, proving Wel-lok™ technology could be utilized for annular isolation in open-hole applications.

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