Attached files
| file | filename |
|---|---|
| EXCEL - IDEA: XBRL DOCUMENT - PATTERSON UTI ENERGY INC | Financial_Report.xls |
| 10-K - FORM 10-K - PATTERSON UTI ENERGY INC | d70467e10vk.htm |
| EX-32.1 - EX-32.1 - PATTERSON UTI ENERGY INC | d70467exv32w1.htm |
| EX-31.2 - EX-31.2 - PATTERSON UTI ENERGY INC | d70467exv31w2.htm |
| EX-31.1 - EX-31.1 - PATTERSON UTI ENERGY INC | d70467exv31w1.htm |
| EX-23.1 - EX-23.1 - PATTERSON UTI ENERGY INC | d70467exv23w1.htm |
| EX-10.9 - EX-10.9 - PATTERSON UTI ENERGY INC | d70467exv10w9.htm |
Exhibit 21.1
Subsidiaries of the Registrant
| State of | ||
| Incorporation or | ||
| Name | organization | |
Ambar Lone Star Fluid Services LLC
|
Texas | |
Patterson Petroleum LLC
|
Texas | |
Patterson-UTI Drilling Company LLC
|
Texas | |
Patterson-UTI Drilling Canada Limited
|
Nova Scotia | |
Universal Well Services, Inc.
|
Delaware | |
Patterson-UTI Drilling International, Inc.
|
Delaware | |
Patterson-UTI Management Services, LLC
|
Delaware |