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| 0000077877-12-000013-index.html | 2012-03-01 08:07:08 | |
| 0000077877-12-000013.txt | 2012-03-01 08:07:08 | |
 0000077877-12-000013-xbrl.zip | 179045 | 2012-03-01 08:07:08 |
| a2011k_exx1031.htm | 515882 | 2012-03-01 08:07:08 |
| a2011k_exx121.htm | 76223 | 2012-03-01 08:07:08 |
| a2011k_exx211.htm | 4408 | 2012-03-01 08:07:08 |
| a2011k_exx231.htm | 3350 | 2012-03-01 08:07:08 |
| a2011k_exx232.htm | 6437 | 2012-03-01 08:07:08 |
| a2011k_exx311.htm | 14628 | 2012-03-01 08:07:08 |
| a2011k_exx312.htm | 14500 | 2012-03-01 08:07:08 |
| a2011k_exx321.htm | 10429 | 2012-03-01 08:07:08 |
| a2011k_exx991.htm | 125846 | 2012-03-01 08:07:08 |
 a2011performancegraph.jpg | 50583 | 2012-03-01 08:07:08 |
| FilingSummary.xml | 13109 | 2012-03-01 08:07:08 |
| Financial_Report.xls | 2180811 | 2012-03-01 08:07:08 |
 logoa02.jpg | 8066 | 2012-03-01 08:07:08 |
 mapofus.jpg | 43010 | 2012-03-01 08:07:08 |
| petd-20111231.xml | 2503745 | 2012-03-01 08:07:08 |
| petd-20111231.xsd | 18814 | 2012-03-01 08:07:08 |
| petd-20111231_cal.xml | 64772 | 2012-03-01 08:07:08 |
| petd-20111231_def.xml | 123671 | 2012-03-01 08:07:08 |
| petd-20111231_lab.xml | 308897 | 2012-03-01 08:07:08 |
| petd-20111231_pre.xml | 161596 | 2012-03-01 08:07:08 |
| petrodev-10kxfy11.htm | 4814405 | 2012-03-01 08:07:08 |
| R1.htm | 37242 | 2012-03-01 08:07:08 |
| R10.htm | 133661 | 2012-03-01 08:07:08 |
| R11.htm | 237904 | 2012-03-01 08:07:08 |
| R12.htm | 53057 | 2012-03-01 08:07:08 |
| R13.htm | 60356 | 2012-03-01 08:07:08 |
| R14.htm | 141140 | 2012-03-01 08:07:08 |
| R15.htm | 52986 | 2012-03-01 08:07:08 |
| R16.htm | 27883 | 2012-03-01 08:07:08 |
| R17.htm | 8935 | 2012-03-01 08:07:08 |
| R18.htm | 106610 | 2012-03-01 08:07:08 |
| R19.htm | 198367 | 2012-03-01 08:07:08 |
| R2.htm | 165664 | 2012-03-01 08:07:08 |
| R20.htm | 135250 | 2012-03-01 08:07:08 |
| R21.htm | 89843 | 2012-03-01 08:07:08 |
| R22.htm | 7767 | 2012-03-01 08:07:08 |
| R23.htm | 26642 | 2012-03-01 08:07:08 |
| R24.htm | 73950 | 2012-03-01 08:07:08 |
| R25.htm | 7002 | 2012-03-01 08:07:08 |
| R26.htm | 357601 | 2012-03-01 08:07:08 |
| R27.htm | 330545 | 2012-03-01 08:07:08 |
| R3.htm | 26449 | 2012-03-01 08:07:08 |
| R4.htm | 151950 | 2012-03-01 08:07:08 |
| R5.htm | 170695 | 2012-03-01 08:07:08 |
| R6.htm | 135956 | 2012-03-01 08:07:08 |
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| R8.htm | 24634 | 2012-03-01 08:07:08 |
| R9.htm | 149669 | 2012-03-01 08:07:08 |
| report.css | 2721 | 2012-03-01 08:07:08 |
 rsreportheader.jpg | 12507 | 2012-03-01 08:07:08 |
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