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Oil and Natural Gas Property Transactions (Tables) | 3 Months Ended
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Mar. 31, 2016
Property, Plant and Equipment [Abstract] |
VPP Transactions | As of March 31, 2016, 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 |
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 |
|  |  |  |  |  | $ | 4,331 |  |  | 5.2 |  |  | 715 |  |  | 14.0 |  |  | 830 |
VPP Volumes Produced During Period | The volumes produced on behalf of our VPP buyers during the Current Quarter and the Prior Quarter were as follows:
|  | Three Months Ended March 31, 2016
VPP # |  | Oil |  | Natural Gas |  | NGL |  | Total
|  | (mbbl) |  | (bcf) |  | (mbbl) |  | (bcfe)
10 |  | 66.0 |  |  | 1.8 |  |  | 222.7 |  |  | 3.5 |
9 |  | 39.4 |  |  | 3.4 |  |  | 89.3 |  |  | 4.1 |
4 |  | 10.1 |  |  | 1.9 |  |  | — |  |  | 2.0 |
3 |  | — |  |  | 1.5 |  |  | — |  |  | 1.5 |
2 |  | — |  |  | 0.9 |  |  | — |  |  | 0.9 |
1 |  | — |  |  | 3.3 |  |  | — |  |  | 3.3 |
|  | 115.5 |  |  | 12.8 |  |  | 312.0 |  |  | 15.3 |
|  | Three Months Ended March 31, 2015
VPP # |  | Oil |  | Natural Gas |  | NGL |  | Total
|  | (mbbl) |  | (bcf) |  | (mbbl) |  | (bcfe)
10 |  | 83.0 |  |  | 2.2 |  |  | 276.3 |  |  | 4.4 |
9 |  | 43.6 |  |  | 3.7 |  |  | 97.0 |  |  | 4.5 |
8(a) |  | — |  |  | 14.0 |  |  | — |  |  | 14.0 |
4 |  | 11.0 |  |  | 2.1 |  |  | — |  |  | 2.1 |
3 |  | — |  |  | 1.7 |  |  | — |  |  | 1.7 |
2 |  | — |  |  | 1.1 |  |  | — |  |  | 1.1 |
1 |  | — |  |  | 3.5 |  |  | — |  |  | 3.5 |
|  | 137.6 |  |  | 28.3 |  |  | 373.3 |  |  | 31.3 |
____________________________________________
(a) | VPP #8 expired in August 2015.
VPP Volumes Remaining to Be Delivered | The volumes remaining to be delivered on behalf of our VPP buyers as of March 31, 2016 were as follows:
|  |  |  | Volume Remaining as of March 31, 2016
VPP # |  | Term Remaining |  | Oil |  | Natural Gas |  | NGL |  | Total
|  | (in months) |  | (mmbbl) |  | (bcf) |  | (mmbbl) |  | (bcfe)
10 |  | 71 |  | 0.9 |  |  | 27.7 |  |  | 3.4 |  |  | 53.9 |
9 |  | 59 |  | 0.6 |  |  | 55.7 |  |  | 1.5 |  |  | 68.3 |
4 |  | 9 |  | — |  |  | 5.4 |  |  | — |  |  | 5.6 |
3 |  | 40 |  | — |  |  | 16.0 |  |  | — |  |  | 16.0 |
2 |  | 37 |  | — |  |  | 8.9 |  |  | — |  |  | 8.9 |
1 |  | 81 |  | — |  |  | 75.0 |  |  | — |  |  | 75.0 |
|  |  |  | 1.5 |  |  | 188.7 |  |  | 4.9 |  |  | 227.7 |

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