From the Abstract: “Three offshore oil production platforms discharged over 40000 m3 of drilling fluid during a period of biological and chemical sampling which was conducted on the continental shelf adjacent to Point Conception during 1987 and 1988.
Buhl-Mortensen, P., J. Klungsøyr, S. Meier, A. Purser, E. Tenningen, and L. Thomsen
From the Summary: “This report presents results from environmental monitoring during discharge of mud and drill cuttings during top hole drilling of four wells at the Morvin field in 2009 and 2010 (Block 6506/11 and production license 134b/c).
Kingston, P. F., L. M. Warren, R. G. Hughes, R. Earll, J. G. Parker, and J. S. Gray
Although there were originally no statutory obligations for North Sea oilfield developers to monitor the environmental impact of their activities, many companies undertook such studies voluntarily.
