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| 0000077877-11-000108-index.html | 2011-08-04 08:03:08 | |
| 0000077877-11-000108.txt | 2011-08-04 08:03:08 | |
 0000077877-11-000108-xbrl.zip | 103665 | 2011-08-04 08:03:08 |
| a2011q2_exx121.htm | 89869 | 2011-08-04 08:03:08 |
| a2011q2_exx311.htm | 14442 | 2011-08-04 08:03:08 |
| a2011q2_exx312.htm | 14771 | 2011-08-04 08:03:08 |
| a2011q2_exx321.htm | 10905 | 2011-08-04 08:03:08 |
| FilingSummary.xml | 10361 | 2011-08-04 08:03:08 |
| Financial_Report.xls | 949509 | 2011-08-04 08:03:08 |
 logoa01.jpg | 8066 | 2011-08-04 08:03:08 |
| petd-20110630.xml | 1094190 | 2011-08-04 08:03:08 |
| petd-20110630.xsd | 17346 | 2011-08-04 08:03:08 |
| petd-20110630_cal.xml | 48230 | 2011-08-04 08:03:08 |
| petd-20110630_def.xml | 87971 | 2011-08-04 08:03:08 |
| petd-20110630_lab.xml | 226744 | 2011-08-04 08:03:08 |
| petd-20110630_pre.xml | 115026 | 2011-08-04 08:03:08 |
| petrodev-10qx2q11.htm | 2455043 | 2011-08-04 08:03:08 |
| R1.htm | 25459 | 2011-08-04 08:03:08 |
| R10.htm | 29404 | 2011-08-04 08:03:08 |
| R11.htm | 12507 | 2011-08-04 08:03:08 |
| R12.htm | 45869 | 2011-08-04 08:03:08 |
| R13.htm | 18155 | 2011-08-04 08:03:08 |
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| R15.htm | 112857 | 2011-08-04 08:03:08 |
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| R17.htm | 74124 | 2011-08-04 08:03:08 |
| R18.htm | 35271 | 2011-08-04 08:03:08 |
| R19.htm | 65861 | 2011-08-04 08:03:08 |
| R2.htm | 152869 | 2011-08-04 08:03:08 |
| R20.htm | 26303 | 2011-08-04 08:03:08 |
| R3.htm | 24584 | 2011-08-04 08:03:08 |
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| R8.htm | 117190 | 2011-08-04 08:03:08 |
| R9.htm | 283572 | 2011-08-04 08:03:08 |
| report.css | 2721 | 2011-08-04 08:03:08 |
| Show.js | 6423 | 2011-08-04 08:03:08 |