WE Report

Lessons Learned

Lesson Learned





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Report No.

341

Discipline/Origin

Drilling
No origin

Well

Shrek
6507/5-9 S, 6507/5-9 A

Date created

2019/10/21
2239 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Operational
Negative

Deepsea Nordkapp


What happened in Pilot hole section:
Debris and cuttings could congregate around the subsea WHIM as cuttings would not go to surface until drilling the 17 1/2″ section.

What Was Planned

WHIM to be installed (but not active) while drilling the 9 7/8″pilot hole in preparation of the 17 1/2″ section and as a contingency against SHWF.

What Was Learned

If WHIM is installed but not active a transportation system for the cuttings should be in place, which in addition to protecting the WHIM, will also provide clearer visibility and aid while bubble watching.

What Actions Are Required

Evaluate to install a CTS (cuttings transportation system) if WHIM is installed but not active.

EDITOR


CLOSE LL (testing)





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