WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

5866

Discipline/Origin

Drilling
Own Experience

Well

Norma
25/7-11 S

Date created

2023/07/30
860 days ago

Project Phase

Planning
Project Phase

LL Type/Classification

Casing
Negative

Deepsea Yantai


What happened in Surface section:
Difficulties with logistics to separate the joints below 11.5 m and the joints longer due to limited boat space because of shallow rig anchor lines. Can only use half of the deck and can not build in height.

What Was Planned

Many joints of 13 5/8″ Casing planned for this well was shorter than 11.5 m.

What Was Learned

Not possible to rack casing in derrick shorter than 11.5 m.

What Actions Are Required

For future operations on Deepsea Yantai, try to limit the joints below 11.5 m.

EDITOR


CLOSE LL (testing)





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