IRS/2024/4266/PON1

Notification details

Status	Completed
First observed date	31 March 2024
First observed time	09:22
Incident type(s)	Oil release, Chemical release
Organisations involved	ITHACA (NE) E&P LIMITED
Installation	Valaris Gorilla VI
Installation type	Other
Field	SEAGULL
Latitude	57° 9' 0.101'' N
Longitude	1° 40' 0.492'' E
Quadrant / block no.	22 / 29

Oil release details

Oil product released	Mineral Oil
How was the quantity released determined	Calculated
Total quantity of oil released	1.32 tonnes

Chemical 1

Chemical product released	BENTONE 42
Total quantity of chemical released	1.8 kg

Chemical 2

Chemical product released	CALCIUM CHLORIDE (ALL GRADES)
Total quantity of chemical released	13.1 kg

Chemical 3

Chemical product released	ECOTROL RD
Total quantity of chemical released	1.8 kg

Chemical 4

Chemical product released	EDC 95-11
Total quantity of chemical released	259.0 kg

Chemical 5

Chemical product released	LIME
Total quantity of chemical released	18.2 kg

Chemical 6

Chemical product released	MICROBAR
Total quantity of chemical released	447.2 kg

Chemical 7

Chemical product released	M-I WATE (All Grades)
Total quantity of chemical released	447.2 kg

Chemical 8

Chemical product released	RHEMUL
Total quantity of chemical released	36.4 kg

Chemical 9

Chemical product released	VERSAGEL HT
Total quantity of chemical released	1.8 kg

Chemical 10

Chemical product released	VERSATROL HT
Total quantity of chemical released	12.7 kg

Formal investigation

Formal investigation ever opened	Yes

Close off details

Release ever ongoing	No

Source details

Source	Drill Floor - Mud return flowline.