WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

8279

Discipline/Origin

Drilling
No origin

Well

Tomcat
6501/10-1

Date created

2025/02/15
295 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

No classification

Deepsea Yantai


What happened in Intermediate section:
During 13 3/8” CSG job, the tong derailed a few times.

What Was Planned

Modified OWS tong rail

What Was Learned

The rails are a bit loose at the end of the tracks. When M/U CSG with the tong the tong tend to get a little rotation, causing the tong to derail with the front left wheel, wheel closest to drillers cabin.

What Actions Are Required

Modified track for 9 7/8” job. Installed brackets down against HT-tracks making the tracks more rigid.

EDITOR


CLOSE LL (testing)





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