WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

2325

Discipline/Origin

Drilling
Own Experience

Well

Hemispheres
36/1-4

Date created

2021/12/24
1443 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Casing
Negative

Borgland Dolphin


What happened in Top hole:
The deck-crew on days started to lay out slick joints in one bay before a crew change happened in middle of the lay out.
Night crew had little experience in tallies and made several faults in the tally, for example writing down 57 on two casing joints, 77 on two other casing joints, skipping a number (72) in middle of a row, and when double-checking their tally against land tally physically outside, 5/9 joints was not correct.
The joints very also poorly marked, and the paint on them was not in the same direction for all of them, which made it hard to read them, and knowing what number they were.

What Was Planned

Load 13 3/8″ casing to rig and prepare a deck-tally.

What Was Learned

That not all deck crews are as skilled as the ones you may be used to. And that especially this crew had little no no ownership over the casing tally, which made them very sloppy.

What Actions Are Required

The DE should go out and verify every row as soon as they are laid down on deck. Speak clearly with BOTH crews on how you want the tally made, and how important it is to make it as perfect as possible.
Also, the deck must write every number in the same rotated way and clearly.

EDITOR


CLOSE LL (testing)





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