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EXHIBIT 21.1
The following is a list of all of Pioneer Drilling Company’s direct and indirect subsidiaries:
1. | PDC MGMT. CO. (formerly SOTEX Exploration Company), a Texas corporation—100% Direct Subsidiary—1% general partner of Pioneer Drilling Services, Ltd. |
2. | PDC Investment Corp., A Delaware corporation—100% Direct Subsidiary—99% limited partner of Pioneer Drilling Services, Ltd. |
3. | Pioneer Drilling Services, Ltd. (formerly Pioneer Drilling Co., Ltd.), a Texas limited Partnership—100% Indirect Subsidiary—owned by PDC MGMT. CO. (1%) and PDC Investment Corp. (99%). |
4. | South Texas Drilling Company, a Texas corporation—100% Direct Subsidiary. |