WE Report

Lessons Learned

Lesson Learned





By: John Langelandsvik

Report No.

5912

Discipline/Origin

Drilling
Own Experience

Well

Norma
25/7-11 S

Date created

2023/09/06
822 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Operational
Negative

Deepsea Yantai


Section N/A. What happened:
Plugging of transfer lines when taking Microbar from vessels several times.

What Was Planned

Using Microbar barite instead of API barite.

What Was Learned

Microbar is a fine-particle barite type and on Deepsea Yantai it has proved to plug up lines more easily compared to API barite.

What Actions Are Required

Evaluate to modify transfer lines/protocol or change to API barite.

EDITOR


CLOSE LL (testing)





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