Quarterly Sales Estimates for CHK
| 03-2007 | 2007 | 1174.3 | 1564.773 | 0 | 4/25/2007 |
| 06-2007 | 1809.2 | 1191 | 1491.914 | 219.042 | 7/26/2007 |
| 09-2007 | 1964 | 1341.09 | 1659.311 | 293.304 | 10/24/2007 |
| 12-2007 | 2286.9 | 1621.9 | 1988.633 | 275.379 | 1/23/2008 |
| 03-2008 | 2467.7 | 1761.9 | 2111.195 | 269.369 | 4/28/2008 |
| 06-2008 | 2982.3 | 1906 | 2368.208 | 350.413 | 7/16/2008 |
| 09-2008 | 3106.7 | 1921.3 | 2574.792 | 449.131 | 10/20/2008 |
| 12-2008 | 2850 | 2085.3 | 2550.31 | 299.277 | 1/28/2009 |
| 03-2009 | 2552.44 | 1300.53 | 1925.448 | 414.206 | 4/23/2009 |
| 06-2009 | 2600.18 | 1329.6 | 1972.585 | 354.284 | 7/21/2009 |
| 09-2009 | 2161 | 1965 | 2008.845 | 77.017 | 10/27/2009 |
| 12-2009 | 2234 | 2020 | 2128.131 | 63.247 | 2/1/2010 |
| 03-2010 | 2548 | 2065.12 | 2380.264 | 137.495 | 4/27/2010 |
| 06-2010 | 2632 | 2219.5 | 2442.129 | 109.725 | 7/21/2010 |
| 09-2010 | 2610.5 | 1387.2 | 2332.41 | 349.014 | 10/21/2010 |
| 12-2010 | 2700 | 1546 | 2377.842 | 340.073 | 2/7/2011 |
| 03-2011 | 2964.8 | 2194.4 | 2645.364 | 223.321 | 4/25/2011 |