IRS/2025/5879/PON1

Notification details

Status	Completed
First observed date	03 March 2025
First observed time	13:35
Incident type(s)	Chemical release
Organisations involved	TOTALENERGIES E&P NORTH SEA UK LIMITED
Installation	Valaris Stavanger
Installation type	NPI
Field	CULZEAN
Latitude	57° 11' 35.0'' N
Longitude	1° 54' 45.0'' E
Quadrant / block no.	222 / 25

Chemical 1

Chemical product released	95% Calcium Chloride S2
Total quantity of chemical released	0.0368 kg

Chemical 2

Chemical product released	Baracarb (all grades)
Total quantity of chemical released	0.0102 kg

Chemical 3

Chemical product released	BARITE
Total quantity of chemical released	0.7814 kg

Chemical 4

Chemical product released	BENTONE® 38
Total quantity of chemical released	0.0079 kg

Chemical 5

Chemical product released	CMO 568
Total quantity of chemical released	0.013 kg

Chemical 6

Chemical product released	DRILTREAT
Total quantity of chemical released	0.0026 kg

Chemical 7

Chemical product released	DURATONE® E
Total quantity of chemical released	0.0324 kg

Chemical 8

Chemical product released	EDC BIOLIFE 250
Total quantity of chemical released	0.37 kg

Chemical 9

Chemical product released	EZ MUL NT
Total quantity of chemical released	0.0632 kg

Chemical 10

Chemical product released	GELTONE II
Total quantity of chemical released	0.0069 kg

Chemical 11

Chemical product released	Invermul NT
Total quantity of chemical released	0.0134 kg

Chemical 12

Chemical product released	LIME
Total quantity of chemical released	0.0182 kg

Chemical 13

Chemical product released	STEELSEAL
Total quantity of chemical released	0.003 kg

Chemical 14

Chemical product released	Steelseal 1000
Total quantity of chemical released	0.0029 kg

Chemical 15

Chemical product released	SUSPENTONE
Total quantity of chemical released	0.0148 kg

Formal investigation

Formal investigation ever opened	No

Close off details

Release ever ongoing	No

Source details

Source	Cuttings conveyor - insufficient bunding