PON1/1588

Notification details

Status	Completed
First observed date	31 January 2013
First observed time	01:30
Incident type(s)	Chemical release
Organisations involved	Diamond Offshore Drilling (UK) Ltd, Enquest PLC
Installation	Ocean Princess
Installation type	Mobile
Field	Knightsbridge Development
Latitude	56° 11' 56.0'' N
Longitude	2° 45' 51.0'' E
Quadrant / block no.	30 / 24

Chemical 1

Chemical product released	Versaclean Low Toxic OBM
Total quantity of chemical released	10.0 kg

Formal investigation

Formal investigation ever opened	Yes

Close off details

Release ever ongoing	No

Source details

Source	Residual Oil based mud in riser when disconnected due to adverse weather.