Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Share-Based Compensation [Abstract]

Fair value of stock options

	Nine Months Ended
	September 30,
	2011		2010
Weighted-average fair value of options granted	$	6.53	$	6.27
Weighted-average risk free interest rate		.66%		1.49%
Dividend yield		0%		0%
Volatility(1)		51.0%		40.62%
Expected life		4.0 years		4.0 years

(1) Expected volatilities were based on implied volatilities from publicly traded options to purchase Nabors’ common shares, historical volatility of Nabors’ common shares and other factors