Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950123-11-042884-index-headers.html | 2011-05-02 15:46:57 | |
| 0000950123-11-042884-index.html | 2011-05-02 15:46:57 | |
| 0000950123-11-042884.txt | 2011-05-02 15:46:57 | |
 0000950123-11-042884-xbrl.zip | 51768 | 2011-05-02 15:46:57 |
| d81291e10vq.htm | 350107 | 2011-05-02 15:46:57 |
| d81291exv31w1.htm | 6063 | 2011-05-02 15:46:57 |
| d81291exv31w2.htm | 6119 | 2011-05-02 15:46:57 |
| d81291exv32w1.htm | 4618 | 2011-05-02 15:46:57 |
| defnref.xml | 28962 | 2011-05-02 15:46:57 |
| FilingSummary.xml | 16418 | 2011-05-02 15:46:57 |
| Financial_Report.xls | 229451 | 2011-05-02 15:46:57 |
| pten-20110331.xml | 261561 | 2011-05-02 15:46:57 |
| pten-20110331.xsd | 14111 | 2011-05-02 15:46:57 |
| pten-20110331_cal.xml | 48119 | 2011-05-02 15:46:57 |
| pten-20110331_def.xml | 20695 | 2011-05-02 15:46:57 |
| pten-20110331_lab.xml | 179977 | 2011-05-02 15:46:57 |
| pten-20110331_pre.xml | 107516 | 2011-05-02 15:46:57 |
| R1.xml | 49518 | 2011-05-02 15:46:57 |
| R10.xml | 18768 | 2011-05-02 15:46:57 |
| R11.xml | 9060 | 2011-05-02 15:46:57 |
| R12.xml | 41971 | 2011-05-02 15:46:57 |
| R13.xml | 15214 | 2011-05-02 15:46:57 |
| R14.xml | 34262 | 2011-05-02 15:46:57 |
| R15.xml | 42795 | 2011-05-02 15:46:57 |
| R16.xml | 15533 | 2011-05-02 15:46:57 |
| R17.xml | 14456 | 2011-05-02 15:46:57 |
| R18.xml | 22707 | 2011-05-02 15:46:57 |
| R19.xml | 8831 | 2011-05-02 15:46:57 |
| R2.xml | 99131 | 2011-05-02 15:46:57 |
| R20.xml | 17449 | 2011-05-02 15:46:57 |
| R21.xml | 9238 | 2011-05-02 15:46:57 |
| R22.xml | 10962 | 2011-05-02 15:46:57 |
| R3.xml | 33501 | 2011-05-02 15:46:57 |
| R4.xml | 108202 | 2011-05-02 15:46:57 |
| R5.xml | 168388 | 2011-05-02 15:46:57 |
| R6.xml | 14511 | 2011-05-02 15:46:57 |
| R7.xml | 113028 | 2011-05-02 15:46:57 |
| R8.xml | 9651 | 2011-05-02 15:46:57 |
| R9.xml | 37777 | 2011-05-02 15:46:57 |