WE Report

Lessons Learned

Lesson Learned





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Report No.

320

Discipline/Origin

Drilling
No origin

Well

Canela
6507/7-16 S

Date created

2019/01/07
2526 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Operational
Positive

Island Innovator


What happened in Production section:
Great care taken breaking circulation at casing TD/washing down to land off. Used 100 lpm steps, ensuring stable pits and smooth SPP before staging up. On washing down and landing off, erratic pressure. Circulated BU volume TD to wellhead and observed erratic pressures. Lifted hanger and circulated 15 mins, relanded with 25 bar less pressure suggesting cuttings swept past hanger LOP while lifted clear.

What Was Planned

Run and cement 9 5/8″ casing.

What Was Learned

Taking time proved worthwhile. No losses while cementing. Subsequent CBL showed good cement around shoe and TOC where planned at 2448 m.

What Actions Are Required

Patience was key to success. Use same procedure in similar operations in future.

EDITOR


CLOSE LL (testing)





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