Oil and Natural Gas Property Transactions (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

VPP Transactions

As of September 30, 2017, we had the following VPP outstanding:

					Volume Sold
VPP #	Date of VPP	Location	Proceeds		Oil	Natural Gas	NGL	Total
			($ in millions)		(mmbbl)	(bcf)	(mmbbl)	(bcfe)
9	May 2011	Mid-Continent	$	853	1.7	138	4.8	177

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 September 30, 2017				Three Months Ended September 30, 2016
VPP #	Oil	Natural Gas	NGL	Total	Oil	Natural Gas	NGL	Total
	(mbbl)	(bcf)	(mbbl)	(bcfe)	(mbbl)	(bcf)	(mbbl)	(bcfe)
9	34.4	2.9	79.9	3.6	37.6	3.2	85.9	4.0
1(a)	—	—	—	—	—	3.1	—	3.1
	34.4	2.9	79.9	3.6	37.6	6.3	85.9	7.1
	Nine Months Ended September 30, 2017				Nine Months Ended September 30, 2016
VPP #	Oil	Natural Gas	NGL	Total	Oil	Natural Gas	NGL	Total
	(mbbl)	(bcf)	(mbbl)	(bcfe)	(mbbl)	(bcf)	(mbbl)	(bcfe)
10(a)	—	—	—	—	108.0	3.0	368.7	5.8
9	105.5	9.0	243.9	11.0	115.5	9.9	262.8	12.2
4(a)	—	—	—	—	20.0	3.8	—	3.9
3(a)	—	—	—	—	—	2.5	—	2.5
2(a)	—	—	—	—	—	1.5	—	1.5
1(a)	—	—	—	—	—	9.5	—	9.5
	105.5	9.0	243.9	11.0	243.5	30.2	631.5	35.4

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(a) In connection with certain asset divestitures in 2016, we purchased the remaining oil and natural gas interests previously sold in connection with VPP #10, VPP #4, VPP #3, VPP #2 and VPP #1. A majority of the oil and natural gas interests purchased were subsequently sold to the buyers of the assets.

VPP Volumes Remaining to Be Delivered

The volumes remaining to be delivered on behalf of our VPP buyers as of September 30, 2017 were as follows:

		Volume Remaining as of September 30, 2017
VPP #	Term Remaining	Oil	Natural Gas	NGL	Total
	(in months)	(mmbbl)	(bcf)	(mmbbl)	(bcfe)
9	41	0.4	36.8	1.0	45.1