Oil and Natural Gas Property Transactions (Tables)

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

VPP Transactions

As of June 30, 2015, our outstanding VPPs consisted of the following:

					Volume Sold
VPP #	Date of VPP	Location	Proceeds		Oil	Natural Gas	NGL	Total
			($ in millions)		(mmbbl)	(bcf)	(mmbbl)	(bcfe)
10	March 2012	Anadarko Basin Granite Wash	$	744	3.0	87	9.2	160
9	May 2011	Mid-Continent	853		1.7	138	4.8	177
8	September 2010	Barnett Shale	1,150		—	390	—	390
4	December 2008	Anadarko and Arkoma Basins	412		0.5	95	—	98
3	August 2008	Anadarko Basin	600		—	93	—	93
2	May 2008	Texas, Oklahoma and Kansas	622		—	94	—	94
1	December 2007	Kentucky and West Virginia	1,100		—	208	—	208
			$	5,481	5.2	1,105	14.0	1,220

VPP Volumes Produced During Period

The volumes produced on behalf of our VPP buyers during the Current Quarter, the Prior Quarter, the Current Period and the Prior Period were as follows:

	Three Months Ended June 30, 2015				Three Months Ended June 30, 2014
VPP #	Oil	Natural Gas	NGL	Total	Oil	Natural Gas	NGL	Total
	(mbbl)	(bcf)	(mbbl)	(bcfe)	(mbbl)	(bcf)	(mbbl)	(bcfe)
10	78.0	2.2	268.7	4.3	103.0	2.7	329.9	5.3
9	42.5	3.5	94.9	4.4	47.5	3.9	103.9	4.8
8	—	13.6	—	13.6	—	15.2	—	15.2
6(a)	—	—	—	—	6.0	1.1	—	1.1
5(a)	—	—	—	—	6.0	1.7	—	1.7
4	10.7	2.0	—	2.1	12.2	2.3	—	2.3
3	—	1.6	—	1.6	—	1.8	—	1.8
2	—	1.0	—	1.0	—	1.6	—	1.6
1	—	3.3	—	3.3	—	3.4	—	3.4
	131.2	27.2	363.6	30.3	174.7	33.7	433.8	37.2
	Six Months Ended June 30, 2015				Six Months Ended June 30, 2014
VPP #	Oil	Natural Gas	NGL	Total	Oil	Natural Gas	NGL	Total
	(mbbl)	(bcf)	(mbbl)	(bcfe)	(mbbl)	(bcf)	(mbbl)	(bcfe)
10	161.0	4.4	545.0	8.7	212.0	5.5	675.1	10.8
9	86.1	7.2	191.9	8.9	96.5	7.9	210.4	9.7
8	—	27.6	—	27.6	—	30.9	—	30.9
6(a)	—	—	—	—	12.0	2.2	—	2.3
5(a)	—	—	—	—	12.3	3.4	—	3.5
4	21.7	4.1	—	4.2	24.6	4.6	—	4.7
3	—	3.3	—	3.3	—	3.7	—	3.7
2	—	2.1	—	2.1	—	4.0	—	4.0
1	—	6.8	—	6.8	—	7.0	—	7.0
	268.8	55.5	736.9	61.6	357.4	69.2	885.5	76.6

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(a) In 2014, we divested the properties associated with VPP #5 and VPP #6.

VPP Volumes Remaining to Be Delivered

The volumes remaining to be delivered on behalf of our VPP buyers as of June 30, 2015 were as follows:

		Volume Remaining as of June 30, 2015
VPP #	Term Remaining	Oil	Natural Gas	NGL	Total
	(in months)	(mmbbl)	(bcf)	(mmbbl)	(bcfe)
10	80	1.2	33.6	4.1	65.4
9	68	0.7	66.0	1.7	81.0
8	2	—	8.9	—	8.9
4	18	0.1	11.2	—	11.6
3	49	—	20.6	—	20.6
2	46	—	11.7	—	11.7
1	90	—	84.8	—	84.8
		2.0	236.8	5.8	284.0