Earnings Per Share

9 Months Ended

Sep. 30, 2013

Earnings Per Share

3. Earnings Per Share

The following is a reconciliation from basic earnings per share of Schlumberger to diluted earnings per share of Schlumberger:

								(Stated in millions, except per share amounts)
	Third Quarter 2013							Third Quarter 2012
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations				Schlumberger Income from Continuing Operations		Average Shares Outstanding			Earnings per Share from Continuing Operations
Basic	$	1,715		1,322		$	1.30		$	1,359		1,328	$		1.02
Assumed exercise of stock options		—		7						—		5
Unvested restricted stock		—		4						—		3
Diluted	$	1,715		1,333		$	1.29		$	1,359		1,336	$		1.02

	Nine Months2013							Nine Months 2012
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations			Schlumberger Income from Continuing Operations			Average Shares Outstanding		Earnings per Share from Continuing Operations
Basic	$	5,137		1,326		$	3.87		$	3,916		1,331		$	2.94
Assumed exercise of stock options		—		6						—		6
Unvested restricted stock		—		4						—		3
Diluted	$	5,137		1,336		$	3.84		$	3,916		1,340		$	2.92

The number of outstanding options to purchase shares of Schlumberger common stock which were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows:

		(Statedinmillions)
	2013		2012
Third Quarter		13		21
Nine Months		13		21