WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

5122

Discipline/Origin

Drilling
No origin

Well

Carmen
35/10-10S

Date created

2023/04/09
972 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Casing
Negative

Deepsea Yantai


What happened in Surface section:
The shoetrack was made up to 27,500 ft.lbs.

What Was Planned

To make up the shoetrack for the 20″ casing to 35,750 ft.lbs (Maximum make up torque) with 1.30 FF TubeLock.

What Was Learned

In the DOP it was not stated clear enough that the MU torque needs to be multiplied with the friction factor of the Tubelock (1.3 FF).

What Actions Are Required

Evaluate to use JetLock with a FF of 1.0 in the future or state more clearly in the DOP to avoid confusion.

EDITOR


CLOSE LL (testing)





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