Inventory, Linefill and Base Gas and Long-term Inventory (Tables)

6 Months Ended

Jun. 30, 2013

Inventory, Linefill and Base Gas and Long-term Inventory

Components of inventory, linefill and base gas and long-term inventory

	June 30, 2013						December 31, 2012
		Unit of	Carrying		Price/			Unit of	Carrying		Price/
	Volumes	Measure	Value		Unit (1)		Volumes	Measure	Value		Unit (1)
Inventory
Crude oil	5,484	barrels	$	471	$	85.89	9,492	barrels	$	737	$	77.64
NGL	8,366	barrels	316		$	37.77	9,472	barrels	388		$	40.96
Natural gas	23,058	Mcf	78		$	3.38	20,374	Mcf	60		$	2.94
Other	N/A		27		N/A		N/A		24		N/A
Inventory subtotal			892						1,209

Linefill and base gas
Crude oil	10,026	barrels	585		$	58.35	9,919	barrels	583		$	58.78
NGL	1,358	barrels	64		$	47.13	1,400	barrels	70		$	50.00
Natural gas	16,965	Mcf	58		$	3.42	15,755	Mcf	54		$	3.43
Linefill and base gas subtotal			707						707

Long-term inventory
Crude oil	2,038	barrels	157		$	77.04	1,962	barrels	149		$	75.94
NGL	1,162	barrels	50		$	43.03	3,238	barrels	125		$	38.60
Long-term inventory subtotal			207						274

Total			$	1,806					$	2,190

(1) Price per unit of measure represents a weighted average associated with various grades, qualities and locations. Accordingly, these prices may not coincide with any published benchmarks for such products.