Property And Equipment (Tables)

3 Months Ended

Dec. 31, 2011

A summary of property and equipment by classification


	December 31, 2011			September 30, 2011
Drilling vessels and related equipment
Cost	$	2,489,323		$	2,315,419
Accumulated depreciation		(450,544	)		(435,577	)

Net book value		2,038,779			1,879,842

Drill pipe
Cost		18,390			18,182
Accumulated depreciation		(14,181	)		(13,885	)

Net book value		4,209			4,297

Furniture and other
Cost		9,064			8,800
Accumulated depreciation		(5,838	)		(5,618	)

Net book value		3,226			3,182

NET PROPERTY AND EQUIPMENT	$	2,046,214		$	1,887,321

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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