WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

5853

Discipline/Origin

Drilling
Own Experience

Well

Norma
25/7-11 S

Date created

2023/07/30
860 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Operational
Negative

Deepsea Yantai


What happened in Top hole:
After the cement of the 30″ conductor was set up the WHRT was released and POOH. Movement was seen in the conductor when POOH with the 26″ Clean out BHA after drilling out the 30″ shoe.

What Was Planned

To run a bullseye on the WHRT.

What Was Learned

To have an inclinometer/bullseye installed on WH until the the BOP is landed in loose seabed condition to be able to monitor the inclination.

What Actions Are Required

Evaluate to use a bullseye bracket on the conductor WH. The bullseye bracket from DQ can be left on the WH until running the BOP.

EDITOR


CLOSE LL (testing)





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