WE Report

Lessons Learned

Lesson Learned





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Report No.

172

Discipline/Origin

Drilling
No origin

Well

Brasse Appraisal
31/7-2 A

Date created

2017/09/28
2992 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Planning
Negative

Deepsea Bergen


What happened in Intermediate section:
After making up the 9 5/8″ liner hanger circulation was attempted established with 2000 lpm. Losses were initiated, and the pumps were shut off.

The liner was then RIH at a reduced speed to minimize the losses while RIH. The cement job was successfully performed with 1500 lpm displacement rate with close to total losses above the planned TOC.

What Was Planned

Verify possibility of circulating with 2000 lpm when displacing cement.

What Was Learned

1500 lpm displacement rate sufficient for good cement job when cementing a 9 5/82 csg/liner in the Hardråde formation in the Brasse area.

What Actions Are Required

Use 1500 lpm displacement rate for cementing 9 5/8″ csg on future Brasse wells.

EDITOR


CLOSE LL (testing)





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