WE Report

Lessons Learned

Lesson Learned





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Report No.

229

Discipline/Origin

Drilling
No origin

Well

Kallåsen
35/12-6 S

Date created

2019/02/07
2495 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Equipment
Negative

Transocean Arctic


What happened in P&A:
The cutting assembly was spaced out wrong from Slb in town. Bull nose and bottom stab below cutter would extend into 13 3/8″ casing when spear/grapple landed off in WH. Had to remove top stab above cutter on the rig to shorten assembly.

What Was Planned

Cut 20″ x 30″ casing

What Was Learned

Difficult to do offshore. Could not set slips on 16″ OD body of cutter, and DC neck above was too short to accommodate slips and jaws of manual rig tongs. Had to soft break handing in elevator, and un-screw same on deck, horizontally.

EDITOR


CLOSE LL (testing)





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