WE Report

Lessons Learned

Lesson Learned





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Report No.

210

Discipline/Origin

Drilling
No origin

Well

Kallåsen
35/12-6 S

Date created

2019/02/07
2495 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Equipment
Negative

Transocean Arctic


What happened in Production section:
Problems experienced with poor quality of pre-doped connections. Remains of rusty water and storage dope in box seal areas. Took extra time to inspect, clean and re-dope many connections. Vallourec 53.5# P-110 VAM 21 Casing was corroded on the outside.

What Was Planned

Run 9 5/8″ casing

What Was Learned

Could the casing have been purchased from another operator? Some casing was marked re-worked. Refurbished casing?

What Actions Are Required

Thoroughly check casing onshore before shipping offshore.

EDITOR


CLOSE LL (testing)





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