WE Report

Lessons Learned

Lessons Learned865


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

PGNiG
8281 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Production section 15/02/2025 Installed brackets on OWS tong after derailing during 13 3/8″ job.

Drilling Engineer


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PGNiG
8282 – PGNiG

Deepsea Yantai Drilling Operational 6501/10-1
Tomcat
Production section 15/02/2025 Use an updated CRTi tool with active set function.

Drilling Engineer


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PGNiG
4946 – PGNiG

Deepsea Yantai Drilling
Experience Transfer Meeting
Operational 6608/1-1 S
Copernicus
Production section 03/11/2022
The gas readings for the 12 ¼” was done very well, and the correlation was quite good between the . . .

Richard Mollison



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PGNiG
4912 – PGNiG

Deepsea Yantai Drilling Operational 6608/1-1 S
Copernicus
Production section 20/09/2022 Time was spend circulating hole clean and even MW in/out.

Drilling Engineer / Morten Laget


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PGNiG
4845 – PGNiG

Deepsea Yantai Drilling Operational 6608/1-1 S
Copernicus
Production section 11/09/2022 Ran casing hanger through rotary and installed master bushing. Difficult to install due to short . . .

Drilling Engineer / Morten Laget


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PGNiG
356 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Used mousehole and bucking machine for offline operations.


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PGNiG
357 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Casing running performance was good.


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PGNiG
358 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019
Backup 12 ¼” BHA tools not testing correctly (XBAT, PWD and HCIM)
Shipped out new backup XBAT and . . .


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PGNiG
359 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Insite (Halliburton) could not handle NOV data, resulting in an overload and some NPT.


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PGNiG
360 – PGNiG

Deepsea Nordkapp Drilling
INTERNAL
Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Casing was sent out one week before handling equipment.


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PGNiG
361 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Cement stand is big and difficult to handle. Time consuming to rack back and lay out. Cement stand . . .


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PGNiG
378 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Issues recovering the OH 9-5/8” csg (in preparation for ST). Swabbing in annulus and back flow up . . .


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PGNiG
379 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Cut of 9-5/8” casing close to/above uncemented weak sand interval (w/ minor 5% gas). Resulted in . . .


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PGNiG
382 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 12-/4” drilling – parameters went well.


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PGNiG
383 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Had to stop operations to fix a leak in TDX s-pipe connection – 2x o-rings.


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PGNiG
384 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 NOV software did not include the PGNiG well so PGNiG personnel unable to see it – only seen in . . .


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PGNiG
385 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Excellent mud performance throughout operations. Issues with O/W ratio due to topside issues.


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PGNiG
386 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Excellent cement performances throughout operations (except the first KOP due to losses, weak . . .


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