WE Report

Lessons Learned

Lessons Learned865


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

PGNiG
8265 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Top hole 14/02/2025 Suction problems during start of cement job. Problems with suction due to air in mixing system. . . .

Drilling Engineer


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PGNiG
8203 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Top hole 03/02/2025 NA

Drilling Engineer


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PGNiG
8204 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Top hole 03/02/2025 Lost marker buoys out of basket when deploying.

Drilling Engineer


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PGNiG
8205 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Top hole 03/02/2025 Protan AM sleeve came sliding down after making up connection on 36” WHH. Joint and conductor string . . .

Drilling Engineer


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PGNiG
8206 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Top hole 03/02/2025 Fiberglass inner string broke off due to strong currents.

Drilling Engineer


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PGNiG
4909 – PGNiG

Deepsea Yantai Drilling Operational 6608/1-1 S
Copernicus
Top hole 19/09/2022 The SMO level sensor did not function in auto operation. Was operated manually. Enhanced made a . . .

Drilling Engineer / Morten Laget


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PGNiG
4906 – PGNiG

Deepsea Yantai Drilling Operational 6608/1-1 S
Copernicus
Top hole 16/09/2022 30″ conductor was run as a “pre spud” activity. Hung off in landing string and acme sub in trip . . .

Drilling Engineer / Morten Laget


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PGNiG
4902 – PGNiG

Deepsea Yantai Logistics Operational 6608/1-1 S
Copernicus
Top hole 15/09/2022 It was sent out personell who had not been on the rig before and was not experienced with the . . .

Drilling Engineer / Morten Laget


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PGNiG
4903 – PGNiG

Deepsea Yantai Drilling Operational 6608/1-1 S
Copernicus
Top hole 15/09/2022 Enhanced and ROV had to be on same channel as drillfloor when doing offline activity due to repeater . . .

Drilling Engineer / Morten Laget


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PGNiG
4844 – PGNiG

Deepsea Yantai Marine
Own Experience
Operational 6608/1-1 S
Copernicus
Top hole 09/09/2022
Everything went according to plan and logging was done remotely. Final position report was delivered . . .

Stian Engvik / Morten Laget


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PGNiG
4840 – PGNiG

Deepsea Yantai Logistics
Own Experience
Operational 6608/1-1 S
Copernicus
Top hole 04/09/2022 With good planning and cooperation, everything shipped to SSJ prior to operation start in due time. . . .

Johan Kjos-Hanssen / Morten Laget



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PGNiG
337 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019
When running conductor 0.5 m higher stick-up was observed.
Base plan was to hold the conductor . . .


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PGNiG
338 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019
Slow ROP with 36″ x 42″ BHA, due to keeping neutral point below seabed, it limited the drilling . . .


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PGNiG
339 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019 Rigged up for conductor running, extra 20 ft mobilized for the operation.


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