December 19, 2006

SCORE up again

GlobalSantaFe Corporation (NYSE:GSF) reports that the company's worldwide SCORE, or Summary of Current Offshore Rig Economics, for November 2006 increased 0.7% to 132.5 from the previous month's SCORE of 131.6.

GlobalSantaFe's SCORE compares the profitability of current mobile offshore drilling rig dayrates to the profitability of dayrates at the 1980-1981 peak of the offshore drilling cycle. In the 1980-1981 period, when SCORE averaged 100 percent, new contract dayrates equaled the sum of daily cash operating costs plus approximately $700 per day per million dollars invested.

	Nov-06	Oct-06	1 Month	1 Year	5 Year
	SCORE	SCORE	Change	Change	Change
By Area:
Gulf of Mexico	109.2	110.9	-1.6%	8.2%	234.5%
North Sea	151.7	152.5	-0.5%	47.6%	189.3%
West Africa	143.8	143.4	0.3%	53.4%	144.6%
SE Asia	123.4	115.5	6.9%	75.0%	122.5%
By Type:
Jackup	126.6	127.2	-0.5%	39.2%	146.5%
Semisubmersible	144.0	141.5	1.8%	37.4%	246.1%
Worldwide	132.5	131.6	0.7%	37.4%	187.6%

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