WE Report

Lessons Learned

Lessons Learned865


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

DNO
5854 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 When checking for cement outside the condcutor there was no cement to be found on 3/4 of the sides. . . .

Drilling Engineer / Morten Laget


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DNO
5855 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 After the 30″ conductor shoe was drilled the inclination of the conductor increased. Used the WHRT . . .

Drilling Engineer / Morten Laget


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DNO
5856 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Used the ROV dredging around the conductor after drilling the 9 7/8″ Pilot hole. The cleaning with . . .

Drilling Engineer / Morten Laget


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DNO
5857 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Due to problems with cement around the conductor and movement in conductor a clamp-on inclinometer . . .

Drilling Engineer / Morten Laget


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DNO
5858 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Due to problems with cement around the conductor and movement in conductor a Bullseye bracket from . . .

Drilling Engineer / Morten Laget


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DNO
5859 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Drawwork in landing mode. No change in hookload while cementing and displacing.

Drilling Engineer / Morten Laget


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DNO
5860 – DNO

Deepsea Yantai Drilling
Own Experience
Planning 25/7-11 S
Norma
Top hole 30/07/2023 One of the stop collars fell of when it was picked up from the boat. When laying down the . . .

Drilling Engineer / Morten Laget


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DNO
5861 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Difficult to see cement in return due to poor visibility at seabed. pH sniffer indicated cement in . . .

Drilling Engineer / Morten Laget


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DNO
5862 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 When displacing the 26″ hole at TD a large volume of WBM was needed. And due to VDL the mud column . . .

Drilling Engineer / Morten Laget


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DNO
5863 – DNO

Deepsea Yantai Drilling
Own Experience
Operational 25/7-11 S
Norma
Top hole 30/07/2023 Everything went according to plan, no hole problems. Not much mud left.

Drilling Engineer / Morten Laget


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Wellesley
5836 – Wellesley

Deepsea Yantai Drilling
Own Experience
Planning 35/10-10S
Carmen
Top hole 16/06/2023 The casing string run was a mixed string of VAM TOP and VAM 21 with VAP TOP run first. This meant . . .

Drilling Engineer / Morten Laget


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Wellesley
5125 – Wellesley

Deepsea Yantai Subsea Operational 35/10-10S
Carmen
Top hole 10/04/2023 When opening the trawl protector with the ROV, one of the locking pins fell off. It was recovered to . . .

Lene Lomeland / Morten Laget


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Wellesley
5126 – Wellesley

Deepsea Yantai Operational 35/10-10S
Carmen
Top hole 10/04/2023 Ran mud mat from rig

Drilling Engineer / Morten Laget


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Wellesley
5113 – Wellesley

Deepsea Yantai Drilling Operational Eirik (OMV) Top hole 30/03/2023 Installation took about 0,5-0,75 hr rigtlme due to conductor movement and work above sea. . . .

Sander Schaathun / Morten Laget


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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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