WE Report

Lessons Learned

Lesson Learned





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Report No.

213

Discipline/Origin

Drilling
No origin

Well

Kallåsen
35/12-6 S

Date created

2019/02/07
2494 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Rig specific
Negative

Transocean Arctic


What happened in Production section:
Trip sheet from Geoservice and Transocean has shown different numbers. In addition, gains have been recorded while tripping in with Wearbushing, and loosing mud pulling out a few hrs later.

What Was Planned

Trip sheets for volumetric control

What Was Learned

Performance Toolpusher has investigated and found out that Transocean trip sheet showed 1200 litre gain, Geoservice showed 110 litre gain. Concluded that there is something wrong with Transocean Trip Tank sensor. Tip tank level shown in Cyperbase is probably wrong.

What Actions Are Required

Use Geoservice sensor on trip out (short term). Open up trip tank, replace float sensor , full commission test of trip tank system.

EDITOR


CLOSE LL (testing)





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