WE Report

Lessons Learned

Lessons Learned865


Operator Rig Discipline / Origin Project Phase Well Section Date What Happened

DNO
8326 – DNO

Deepsea Yantai Drilling Operational 35/10-13
Kjøttkake
Reservoir section 19/02/2025 Needed to build a drilling pup for coring using a balldrop sub.

Sander Schaathun / Stig Seland


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DNO
5920 – DNO

Deepsea Yantai Drilling Operational 25/7-11 S
Norma
Reservoir section 11/09/2023 The cap rock was longer than anticipated, difference form mainbore. The core jammed off in the . . .

Drilling Engineer / Morten Laget


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DNO
5921 – DNO

Deepsea Yantai Drilling Operational 25/7-11 S
Norma
Reservoir section 11/09/2023 Core jammed off on all 3 cores.

Drilling Engineer / Morten Laget


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DNO
5922 – DNO

Deepsea Yantai Drilling Operational 25/7-11 S
Norma
Reservoir section 11/09/2023 The BHA took weight on the way down in open hole. Had to ream down on several of the core runs. On . . .

Drilling Engineer / Morten Laget


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