WE Report

Lessons Learned

Lesson Learned





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Report No.

187

Discipline/Origin

Drilling
No origin

Well

Serin
35/12-7

Date created

2019/02/05
2496 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Planning
Positive

Transocean Arctic


What happened in P&A:
Reduced to 10 m3 which made a massive difference to the amount of slop generated and skips filled.

What Was Planned

Planned to use 15 m3 spacer ahead of P&A cement plugs.

What Was Learned

Reducing to 10 m3 allowed one x 25 m3 mud pit to hold 2 complete spacers for 2 plugs. (10 m3 ahead, 1.2 m3 behind to balance plus dead volume). Reduced volumes should be used for future wells.

What Actions Are Required

Plan for lower spacer volumes.

EDITOR


CLOSE LL (testing)





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