WE Report

Lessons Learned

Lesson Learned





By: John Magne Langelandsvik

Report No.

467

Discipline/Origin

Drilling
No origin

Well

Schweinsteiger
6204/11-3

Date created

2020/08/31
1923 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

BHA
Negative

Borgland Dolphin


What happened in Top hole:
More manual handling and time spent in addition to less efficient handling when not having all BHA lifting subs and JAR Pup joint to have 6 5/8″ shanks.

What Was Planned

In planning for this well all the BHAs have been fitted with 5 1/2″ shanks on the lifting subs 36″ through 12 1/4″.

What Was Learned

Since all the rigs 8″ DCs have 6 5/8″ shanks, that should have been taken into account in the planning.

What Actions Are Required

Plan for what size shanks is going to be used with regards to the BHA handling. For the further use of Borgland Dolphin and same 8″ DCs, the shanks should be made up to 6 5/8″.

EDITOR


CLOSE LL (testing)





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